4.3 Rear Differential in the 2022 Subaru BRZ - How Does it Drive?

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Modifications:
-4.30 differential from a 2017-2020 BRZ/86
-205/5516 Bridgestone Potenza RE-71RS Tires: bit.ly/3SQbbKv
16x7 Enkei RPF1 Wheels, 5x100, 35mm offset, 13.7 lbs/ea
-DBA 4000 Front Rotors & Porterfield R4S Pads
-StopTech STR-600 high performance brake fluid
-Charcoal Filter Removed
-MTEC Clutch Helper Spring
-Wireless Carplay Adapter: amzn.to/3BhbgAR
-Disabled active sound control
2022 Subaru BRZ Premium 6-Speed Manual
Color: World Rally Blue Pearl
MSRP: $27,995
MPG: 20 city / 27 highway
Horsepower: 228 hp @ 7,000 rpm
Engine: 2.4 L 4-cylinder
Curb weight: 2,815 lbs
Transmission: 6-speed manual
Dimensions: 168″ L x 70″ W x 52″ H
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The audio in this video was recorded with in-ear binaural microphones, headphones are highly recommended!
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Thanks for watching!

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Опубликовано:

3 окт 2022

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Комментарии : 224

@TheTopher Год назад

Fuel economy update! 4.1 stock diff yielded 32.5mpg hwy, 4.3 diff from ‘17-20 BRZ - 32.2 mpg hwy. Video goes up on Daily Motor’s RU-vid channel soon.

@caseymoore1281 Год назад

I did a 2.88 to 3.58 in my ND2 that sees a lot of 65-75 mph speed limit highway. Mpg went from 33.4 to 34 so far lol. Might still be climbing. I find it so interesting that the actual acceleration numbers aren't a whole lot different (like quarter mile time/trap speed) but the car feels like it pulls harder.

@adamr3345 Год назад

has it shortened the 0-60 time? if so to what possibly, thanks!

@caseymoore1281 Год назад

@@adamr3345 its probably slower 0-60 because now a shift to 3rd is needed

@adamr3345 Год назад

@@caseymoore1281 thats what I figured, however when comparing the 2015-2016 gt86 to the 2017-2020 with the 4.3 differential those showed a faster 0-60 time. I see what you mean with top of second is 57 mph

@terrytruex3482 Год назад

Always enjoy your enthusiasm for cars and your "feel" for the subtle things. Also appreciate your smooth driving. I am an old guy but you keep me interested!

@harrybuhse8622 Год назад

Your BRZ content is like crack to me. I think I've watched all these videos at least twice.

@silentvalue Год назад

When i had a 2001 honda s2000, i swapped the transmission with a 2006 ap2 unit when I had the clutch changed. The gearing increase with the 9k redline was my favorite mod I ever did to that car.

@arni4750 Год назад

one day imma do the same. when i own a s2k. i’m not that far of money wise but it’s not a fees able decision yet

@aavalos7760 Год назад

@@arni4750 Just make sure you're financially sound man. Dont be like these people out here going under cuz they want it sooner.

@Addison0526 Год назад

Any reason you went for transmission swap rather than a rear gear swap?

@silentvalue Год назад

@@Addison0526 It was actually less expensive than doing a set of 4.3's or 4.44's back in.....2010. I also got the carbon synchros and better 6th gear highway rpm for mpg. Since I was the 3rd owner and the car had 100k miles at the time, I wanted to go with the updated oem clutch disc that had less clutch buzz. I only paid once for labor to have it put in and then sold my ap1 transmission too locally. 2nd through 5th was 1-2% shorter and 6th was 1 % taller based on the secondary reduction gears. I figure the ap2 trans with the stock 4.10's made it almost like doing a set of 4.3's in comparison on how it drove.

@bhearing7681 Год назад

I absolutely enjoy all your Brz videos from 1st gen and second. I always find myself looking back. Thanks for the content! I'm excited to experience winter in my 23 Brz

@n-power-automotive Год назад

I swapped a 3.23 limited slip diff into my Charger R/T that came stock with a 2.65 open diff. It was by far the most noticeable mod I did performance-wise. Glad the 4.30 is working out in the BRZ!

@ryanb8736 Год назад

These cars remind me of the 80-90’s. Old GT86’s, Celicas, 200/240SX’s were fun cars that have some of the best memories. Slow fun with the most memories!

@SerPurple51 Год назад

The reason they probably changed the ratios in the first place is because of the push for higher MPG numbers. I think you'd be fine with that setup being your mostly around town and it doesn't seem too bad on the highway.

@krzych91krk Год назад

They also wanted to make it hit 60 in 2nd gear for better 0-60 time. Assuming stock does 60 in 2nd.

@Oldschool503 Год назад

TheTopher and a BRZ is like peanut butter and jelly, they go so well together!

@QueTheChaotic Год назад

Nice update! There aren’t many cars that can bring thus amount of fun. Looking forward to seeing the winter content

@chippyonline001 Год назад

I think I was around a sophomore in college when the 86 and BRZ came about. I'm still in love with either of these two machines.

@AndreThompson925 Год назад

I had a 1992 5 speed Z28 that came with 3.08 gears and I swapped out an Auburn 3.73 rear end and the car became so much fun. I finally settled on 3.55 set and it was just about perfect.

@ShifterDrifter Год назад

Wow, it's so great that it's more tail-happy with this diff👌

@TheBartimaeus Год назад

Great update, seems like a fun mod. All of your content is fun, but this is especially useful to me as an only-car GR86 owner in SE Michigan. Cheers!

@Tiagovw Год назад

I love this car, the interior is so cool

@jyudat4433 Год назад

just recently went from 3.7 open to 4.1 lsd (from 2015 frs) in my 03 is300. i feel equally as you do here in this vid!

@redbullgavemewings17 Год назад

Love the gearing in my 22 mx5 rf. Nice upgrade!

@CARBONHAWK1 Год назад

How nice it would be to have a way to easily change gear ratios

@razy7609 Год назад

Quick change ratio

@aaromon43 Год назад

agreed. aggressive for the track, taller for highway commuting.

@0163844098 Год назад

Could work like how semi-trucks with 2 different sets of gear ratios, so they actually have 10+ gears. I imagine it's abit complicated and heavy on a road car though.

@jardim23 Год назад

@@0163844098 Not complicated, 10 speeds are simple in design, just BULKY AF, the issue would be in packaging. Some trucks even have a "reduction box" that splits all the gears into 2 separate ratios, like a 2 speed transmission for the transmission itself, if you will.

@bendino9016 Год назад

what you want is an Under/Overdrive unit like the ones made by Gear Vendors. too bad they dont make them for imports.

@r.j.bedore9884 Год назад

I second the idea of doing a Safari build. I've seen a bunch of renderings of them online and they look amazing, plus the added ground clearance will be helpful during Michigan winters, especially with all of the potholes. Also, with this 4.30 rear differential you've already put in you could put on a bit larger diameter tires without feeling like you're down on power compared to the factory setup.

@artblackwood7936 Год назад

This is a cool idea. I do almost no highway driving. Going to try to find a 4.3. Thanks.

@kineticU Год назад

Great vid. I want to mod my 2015 BRZ. Got it has a “salvage” title. What a little driver! So much more potential, but so good in stock form.

@Kamukix Год назад

I love everything about this idea, this is the way. 😁👍

@aroundomaha Год назад

Wow this an interesting mod that I hadn't considered. I autocross in Lincoln so most courses hit the rev limiter multiple times. But this looks like fun and is now on my BRZ list along with Remark R1 exhaust. I've decided the BRZ won't be a road trip car aside from going to regional autocross events, so mild mods for fun are what I'm likely to do. The differential mod is a great idea.

@gabriel.casanas Год назад

Have you looked into Corsa exhaust, it sounds way better imo, no drone

@Fideon Год назад

What class would changing the diff ratio move you to?

@aroundomaha Год назад

@@gabriel.casanasI haven't looked at that exhaust but will. I'd like to save some weight but mainly want a little more sound.

@aroundomaha Год назад

@@Fideon I'm not sure. Section 13 od the SCCA rulebook says option conversions can be done only within a specific model year. So it would throw off classing. Probably not an issue for local events but would be at Nationals.

@romachoz Год назад

It’s the first mode we do in europe for our e36 bmw, 4.44 final drive ratio with 2.8 l6 it’s feels like another level. Stock came with 3.23

@darksunrise8777 Год назад

Great video! Was wondering about a 4.3 swap into a 2nd gen, but didn't think it'd happen anytime soon. Definitely on my long-term mod list. Can you record a 1st gear pull? Curious whether 1st feels too short now.

@aroundomaha Год назад

I'm curious about your thoughts on tire and wheel fitment. The lightweight wheels are interesting but I'm surprised you went more narrow than stock. You have WAY more history with this platform than any other reviewer. It would be helpful to hear how you approach this car differently than your old one.

@Pete0126 Год назад

Love your choice of mods! My fav thing I've done to my car (8th gen civic Si) is swap the stock final drive 4.77, to the type r 5.06. More fun everyday :D

@TassieLorenzo Год назад

The 8th-gen Si has the EP3/DC5 Type R final drive is that right, and 5.06 is the FD2/FN2 Type R final drive? ...and RSX Type S had a taller 4.39 for some reason? 🤔

@Pete0126 Год назад

@@TassieLorenzo correct, I put the FD2 FD in mine

@MRX5000X Год назад

I knew it! I asked if you kept your old one and knew it was just a matter of time.

@jasonmoyer Год назад

16's look awesome on that car.

@JasonISF Год назад

This was the best mod I did to my '14 BRZ. It felt lazy to drive with the original diff in it, especially with the gutless midrange of the FA20.

@fivefingerheist Год назад

Makes me miss my GR86. Had to sell her when my Bronco came in though. Hoping a few years down the road I can get a BRZ or GR86 again!

@BRZtoch Год назад

11:57 “a little bit of a reset for me” then the video resets. Love it. 😂

@anthonygreco8285 Год назад

To be honest, you might not notice much of a difference in MPG. On the flip side, it may improve, it all depends where the sweet spot is for the engine’s efficiency. I previously owned a 1998 BMW 318ti and the gearing was very short and I still averaged 30+ MPG. Keep us posted. I’ve been debating if I should attempt to grab a GR86/BRZ given winter in NY is coming.

@sameerpandya1947 Год назад

Thanks!

@TheTopher Год назад

Thanks Sameer, appreciate the support!

@postalpancho Год назад

Larger gear, the oldest trick in the hood for good acceleration. Definitely the best mod so you don’t have to tune and they won’t void your warranty. I don’t know why more people don’t do this.

@TedwardDrives Год назад

Yes. yes. yes.

@reemeruxd Год назад

Im wondering if the thinner cylinder walls will be a weak point for people who decide to boost the second gens

@Between2Turns Год назад

Thanks for checking the 2nd gear top speed, I’ve wondered about that. Redline in second gear is a very common occurrence in autocross, so this tells me that on most courses it’ll be perfect. Rarely do you hit 60 MPH in something with similar power/weight.

@johnathanrobinson7669 Год назад

Don’t know much about cars but I do have a 86 auto, I really hate how high the rpm get to change gears, would doing this help my situation?

@jasonyee6533 Год назад

Ice racing! That would be sick!

@Ch3mG33k Год назад

So funny; I literally just got a 2023 and the first thought I had was trying to grab an older diff. Curious to see what your snow setup is going to look like. I need to figure out what I'm gonna do, too.

@wcrobbinsnest Год назад

0-60 run would be a fun comparison.

@postalpancho Год назад

0-60 is likely slower now because he needs to shift into 3rd to hit 60 but it is definitely an overall faster car. Kinda like how the WRX used to have a faster 0-60 than the STI because the STI had to shift into 3 before 60 but everyone knew that in reality the STI beats the WRX.

@richardhoulton4016 Год назад

How does the “no speedo recalibration” work? Where is the speedo sensor?

@biffbastion301 Год назад

Our order was set to show in October, but its been pushed back to November :( Totally bummed. Sales guy said "Dont shoot me!", but I said no it was kind of expected. Our order was put in back in June, so I am expecting December if lucky.

@Haloskippy Год назад

had no idea they changed the gearing in the 2017+ model 86s. Wonder why they went back to the 4.10 for the 2022 models.

@hardchemist Год назад

I just ordered a '23 BRZ! MT & Limited trim, Sapphire blue. Not to fall into that trap, but does the extra gear change to 60MPH affect the score? You said it feels faster, but thanks in advance if you can perform a measurement!

@larrylampshade1734 Год назад

I’ve always wanted to put the M85 3.91 diff into my turbo brz. They are discussed on the forums as if they are widely available but they sure as heck are not in my experience. Only listing I’ve ever actually come across would have been well over a grand after shipping.

@joshuachristiansen2626 Год назад

When you say that 1st is now a lot shorter. Is it 6MT crosstrek short?

@gt3rs587 Год назад

Hi, 1. The 4.3 differential is only 5% shorter than original. It's like 11 hp increase. Does it realy so noticible? How do u think it will be on the track? 2. How much camber? Front? Rear? Thanks

@mosswine5417 3 месяца назад

hmm wonder if it'll have enough power to drift in 3rd and keep a nice angle in the dry, or will it bog down?

@Blight-fp3vt Год назад

It didn't require a speedometer change? That's nice to know. It was on a list of mods for my car, but that really pleases me knowing I wont require a tune.

@cokeycola9514 Год назад

Seriously considering a BRZ/86 for my next car. Also in Michigan, so I hope it holds up! Any tips @TheTopher?

@TheTopher Год назад

Tall sidewalls and Krown rust control are your friends!

@KillerBMotorsport Год назад

What happened to the gear indicator? Is that no longer functional or correct because it's based on RPM/Load/Speed?

@jenssenvaldez3051 Год назад

this is a much better mod on the AT side. since they have taller gears first or 2nd gen

@TheTopher Год назад

Definitely a good mod for auto cars!

@crowntug Год назад

Any plans for headers and exhaust?

@gabriel.casanas Год назад

Will you dyno it to see the torque difference in the numbers?

@vincentbaelde-millar670 Год назад

Daily driving the car I actually want a higher ratio rear diff. 3000rpm in 6th on the highway seems a bit high and I'm pretty sure it could get better fuel economy.

@ddogg14 Год назад

Sick

@Rannd Год назад

Are you going to the Subaru Speed Expo at Gingerman next weekend?

@artblackwood7936 Год назад

Is the earlier version (2017-2020) 4.3 plug and play?

@williebrown1974 Год назад

I wish the first 5 gears were aggressive while the 6th focused on mpg for freeway use.

@UnrealOG137 Год назад

Yeah. Cruising RPM should be 1200 lower than what it actually is.

@future_phonk 5 месяцев назад

Is the 0-60 time better? Would love to see a comparison if you had footage before the swap.

@iokuse8498 Год назад

What's wrong with the stock mechanical brz LSD?

@LeonidDragun Год назад

Is the RTV problem over blown?

@DailyStreetASMR Год назад

I just picked one up yesterday. It may not be the fastest car in the garage but man it’s so fun to drive

@acarenthusiast3036 Год назад

Will the differential void warranty?

@RavenHiker89 3 месяца назад

How are these in the snow ? With snow tires ?

@ajchakravarti3936 Год назад

This is a great video! Thank you @TheTopher - can you recommend a good seller for the diff? I'd like to do this on my brz as well!

@TheTopher Год назад

I'd just check seller ratings on eBay, and go from there!

@pan4632 Год назад

Would this void your warranty in any way?

@rs3tuber425 4 месяца назад

I have been watching many of your videos and I always told my son that your car felt peppy, it looked as if you were hitting redline fast. Now I get it, the final drive makes a big difference. On this car I am not looking for a lot of speed but I would appreciate better acceleration. What percentage do you think it shortens the gears? like 5% ?

@shinn43 Год назад

Hey Topher you considering any throttle controller to improve the throttle response? Unsure if you've experienced the inconsistent throttle and delayed response.

@TheTopher Год назад

Throttle response isn’t great, but I’ve gotten used to it. I thought about a throttle controller but they’re all ~$400 and I’m not sure how I feel about adding in something like that that could fail.

@shinn43 Год назад

@@TheTopher Thanks for that note, glad to hear the change in gearing improved the car's fun factor.

@999jesster999 Год назад

Did you do a video about your brake setup? Really curious what difference that created

@TheTopher Год назад

Will report back after the next track day!

@999jesster999 Год назад

@@TheTopher amazing I'd love to hear it I often consider similar mods to you! Amazing videos 👏

@mresab1997 Год назад

I’m really liking this first person ride along style, what’s your camera set up look like?

@TheTopher Год назад

Thanks, just got a hero 11! Rest of the info is in the description 👍

@Spextre Год назад

This is super interesting. I own a tuned 2018 50th anniversary BRZ. I've tested my gearing MPH redlines for Forza horizon replication. but here's what they were 1st:35 2nd:56 3rd:81 4th:103 5th: 127 PS: Would love to give you or ThatDudeInBlue my BRZ when the turbo build is all done in a few months :) Going EQUAL Length JDL with the upgraded GTX2860r Gen 2 Garret Turbo

@milesfathi Год назад

Hey topher, I've noticed your car has the same metallic rattle around 5k rpm that mine does. Does this concern you at all? Apparently not all twins have it. Also noob question: does the differential swap void the warranty?

@JTube571 Год назад

Some people don't care about the warranty as much as others. My advice for anyone that asks about warranty is to just leave it stock.

@brody7764 Год назад

The only way a modification will void your warranty is if it can be proven that it contributed to damage.

@anhiirr 4 месяца назад

NGL the stock DIF is what had me on the fence on these, That and a BBK being relatively necessary. Had me looking towards WRX with a BBK or a GTI for the amenities aspect. Still largely considering a brz/86 for that platform/chassis. Though a wrx, corolla, r line gti sounds nice. Just seems more costly and a tradeoff of weigh for power/awd. That ultimately gets determined by the low volume sale/aspect that the 86/brz platform entails with the inherent/future value aspect from how rare they are on a yearly/sale basis. A 4.3 dif, bbk and a few suspension tunes or throttle response/pedal tune and this platform seems to be a lot more reliable/hard ran and cost effective compared to something with awd/turbos. Just seems like the 4.1 was an "implementation/by product" of them thinking it would mitigate some of the EPA aspects from them adding the 2.4 stroker vs the previous generation. More power/torque curve access...and yet a 4.1 dif definitely had me on the fence with the "marketing" aspect or what this car brought to the table out of the box vs something more or less to be considered TRULY ideal or a more or less IDEAL cost effective DRIVERS car. Track/life/revs can obviously harm the re-sale value of this car but to someone as their weekend/for fun secondary option that will see lower milage/abuse these cars will SURELY appreciate in value esp the 6 spd/limited trim variants. 12:34 thats definitely sold me on the 4.3 swap...its not just about the power/torque figures but that engine breaking potential adds to the drivability immensely.

@mav4516 Год назад

Honestly i want to hear more induction sound

@Kamukix Год назад

QUESTION, does my view count still show up if I watch videos on my Xbox in the living room but grab my phone to make a comment then close the app? 🤔

@AndreThompson925 Год назад

Tall gears is what I hated about my mk7 GLI. Car did like 73 in 2nd gear...all in search of better MPG. Thankfully my Miata doesn't have any of these issues.

@iceman7179 Год назад

How much does your car weigh now? under 2800lbs?

@gryphon123456 Год назад

That's a good question..... for a sports car how many miles from new before you do your first tranny / differential oil change / flush? I think this looks to have been an amazing decision for the car. more time in the torque curve is never a bad thing..

@TheTopher Год назад

I usually stick to around 1000 miles for first oil change. In this case, I did a couple track days right after that and then changed trans fluid ~4k. Should've done it around 2k or so but it's fine.

@iokuse8498 Год назад

All bolts up ? Nothing else needed ?

@dadhats Год назад

need this on my first gen e85 brz 🤔

@tsukuyomiwrld2029 Год назад

exhaust up next?

@brzant Год назад

how would this be on automatic trims?? @topher

@brzant Год назад

id like to know , please !

@deanyang1982 Год назад

Are those 16 inch rims?

@xvoid9949 Год назад

Can you do id3

@nico3727 Год назад

Hi! What would you suggest as the most fun car Veloster N or Gt86/Brz or 370z for around $25000? Mostly stock. Any other suggestions?

@larrylampshade1734 Год назад

Isn’t Veloster N front wheel drive?

@jayjacaty3009 Год назад

Depends on how you define fun. The 370 has way more balls than the 86, but the 86 is a better dance partner. Choose with that in mind. There is no wrong decision.

@BoldBrandFlakes Год назад

At 25k I’d rather save up money and get the GR86 instead of the previous gen that have been beat up on and are overpriced in this market.

@TheTopher Год назад

I’d vote BRZ/86 or Fiesta ST

@arandomcommenter7051 Год назад

VF Tuners, EcuTek and open flash have already cracked the ECU on this car and are working on tunes for these for the public. We’re only a few months out from tuning options, finally lol

@TheTopher Год назад

That's good to hear, finally!

@mresab1997 Год назад

We’re also the same amount of time out before they capitulate to the EPA and turn off all the “fun” parameters for tuning these new cars. We’ll see… sigh

@WilChu Год назад

Hmmm...I just noticed that the Subie doesn't have the current gear selection indicator like the Toyota does

@TheTopher Год назад

Yeah I turned that off, it’s a bossy little screen, always telling me what gear to change into!

@MehmetArslan-cc3zo Год назад

Is an additional engine oil cooler necessary for these cars?

@TheTopher Год назад

If you do a lot of track driving it’s a good idea 👍 I only track mine ~2-3x/year so just keep an eye on temps.

@93455Driver Год назад

Camber change is an adjustment or using camber plates?

@TheTopher Год назад

Eccentric camber bolts

@davo5400 Год назад

Should you tune just for this modification? I would think to maximize the shorter gearing it makes sense?

@TassieLorenzo Год назад

Great video! It makes me annoyed that Subaru and Toyota undid the change to the 4.3 diff.

@BookerCan Год назад

I've heard some reviewers say that the GR86's engine is tweaked slightly differently than the BRZ's? Is this true ? Any thoughts on that? Once again, love the content.

@richardhoulton4016 Год назад

The throttle mapping is obviously very different with the GR86 being a fair bit more aggressive. But I seriously doubt that the actually engine mapping is any different. Aggressive throttle maps can certainly give the illusion of more pep though.

@sayetauaupee6482 Год назад

Yeah I'm all in to swap out the 4:10 to 4:30. Got one free shipping no tax $650 from FL to WA -not bad! Riding solo, tall but not overweight at 180, no cargo but a full size spare behind the passenger seat, 5K miles driven, the lower gearing likely should have been from factory and for that matter, they should have been 16 and 17 wheels offered and not 18" ones cuz they're a really poor option for fun driving. (IMO)

@ishaankanda1249 Год назад

The c8 z06 is out can you please test drive it

@TheTopher Год назад

Working on it!

@Pantallideth94 Год назад

I want a 86 or brz but I live in Rhode Island

@vipermoon_ Год назад

I would love to see a rally spec if you want that

@TheTopher Год назад

I think that's the move, especially with how bad the roads have gotten here. Driving TO the rallycross has gotten rougher than driving IN the rallycross lol.