This 175 MPH Big Turbo MX-5 Miata Makes 22 PSI On STOCK PISTONS

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Matt brings his freshly painted BorgWarner EFR 6258 powered Nardo Grey MX-5 Miata to the shop for a build breakdown. His car features a full BOFI Racing turbo setup including the low mount manifold, downpipe and prototype 3-inch exhaust. An M-Factory 3.3 final drive gives a top speed of over 175 MPH, making it a threat to almost anything on the road.
TIMESTAMPS
00:00 Intro
01:05 The story so far
02:41 Exterior mods
05:25 Interior mods
06:56 Engine mods
09:01 Fuel pump & injectors
12:20 Seam welding
13:03 How to do 175 MPH
16:26 Driving the car
PRODUCTS IN THIS VIDEO
Low mount manifold & downpipe kit bofiracing.co.uk/bofi-racing-...
BorgWarner EFR 6258 turbo bofiracing.co.uk/borgwarner-e...
AEM fuel pump bofiracing.co.uk/aem-50-1200-...
640cc injectors bofiracing.co.uk/bosch-ev14-6...
M Factory 3.3 gear set bofiracing.co.uk/mfactory-dif...
MeisterR CRD coilovers bofiracing.co.uk/meisterr-zet...
MS Labs MS3 Mini ECU bofiracing.co.uk/ms-labs-ms3-...
Jass Low Profile headlights bofiracing.co.uk/jass-perform...
230mm intercooler kit bofiracing.co.uk/bofi-racing-...
Turbosmart actuator bofiracing.co.uk/turbosmart-e...
Turbosmart 4 port EBC bofiracing.co.uk/turbosmart-4...
Fluidampr bofiracing.co.uk/fluidampr-ha...
Boundary Engineering oil pump bofiracing.co.uk/boundary-ass...
Motamec MRX bofiracing.co.uk/motamec-mrx-...
Motamec harnesses bofiracing.co.uk/motamec-6-po...
GC Fabrications roll bar bofiracing.co.uk/gc-fabricati...
GC Fabrications door bars bofiracing.co.uk/gc-fabricati...
GV lip bofiracing.co.uk/gv-style-fro...
Works Bell quick release bofiracing.co.uk/works-bell-r...
PRODUCTS CATEGORIES
Turbo Manifolds & Downpipes: bofiracing.co.uk/forced-induc...
Wastegate Actuators: bofiracing.co.uk/forced-induc...
Body & Styling Parts: bofiracing.co.uk/body-styling/
LINKS
bofiracing.co.uk/?ref=8410
/ bofiracing
/ bofiacing

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Опубликовано:

29 июн 2024

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Комментарии : 188

@---jh4nf 4 года назад

that cup holder flap made me burst out laughing 🤣

@sketti2543 4 года назад

Miatas cup holder game weak asf😕 one of the first interior mods to do..new/custom glove box/cup holders

@muhammetozdemir5375 4 года назад

Aerodynamics my dude. But my cupholders of my mkII aint better😂

@MrOvershoot 4 года назад

Mine does that too & with only 146bhp, hurts when you slam your arm down on it

@culleybayless9835 3 года назад

HAHAHAHA I saw this comment before and I was like wtf is he taking about. No I’m laughing too 😂😂

@stupidasshol3 3 года назад

The "SERIOUSLY EXTREME" custom rear arches got me... lol

@spazda_mx5 4 года назад

I think my MX-5 could probably top 175 but I'd be worried about it trying to turn into an aeroplane.

@thatblackz1850 4 года назад

If its an NA with stock gearing you run out of geaar at around 130-140

@spazda_mx5 4 года назад

The box is a T56 so 6th is intergalaticly long, true top speed would probably be had in 5th.

@thatblackz1850 4 года назад

@@spazda_mx5 got ya

@Gxkrv 2 года назад

@@spazda_mx5 still got the t56? How’s it holding up?

@spazda_mx5 2 года назад

@@Gxkrv No problems, its strong just a bit agricultural.

@andrewtempleton2407 4 года назад

It’s great to see more and more 5’s getting built to their 350+ potential! I think it’s companies like BOFI that can make this achievable on a more reasonable budget than ever before. When we forged our 5 nearly 15 years ago now, if BOFI was around it would of saved a hell of lot of hassle and import tax! And although our mx is not quite the 5 it was, it was still good enough to make 365bhp on the last dyno run we did. Keep building these beasts everyone! 👍

@BoostedNDMiata 3 года назад

Beautiful. I love the somewhat subtle look on the outside and all the real beauty in the performance. I’ve left my ND exterior with a stock look aside from the rims and lower stance due to cool overs. Can’t wait to get my car back an post a full review of my 300whp ND!

@onethirdmayo8556 4 года назад

I’m not impressed by the 175 mph, but a miata being able to make a stop in one piece after reaching that speed.

@FUzZhockeyboys 4 года назад

Have you ever hit 90+ in a Miata?

@SHLOCK8241 3 года назад

Trace Armstrong it takes a little while to hit 90😂 I don’t think he ever drove a Miata

@FUzZhockeyboys 3 года назад

Rocky Imbeault the fastest I’ve gone in my boosted Miata is 90 and I don’t plan on doing it again until my shits more study, it felt like the thing was about to fall apart.

@skylerblake6969 3 года назад

I have a pretty much stock nb1 and ive hit just over 100 and it felt stable although i did 120 in a chevy aveo once so anything else feels more stable

@crawford323 3 года назад

It’s always something.

@jaketaylor9174 4 года назад

Love the content,solid build, More please 👍

@BOFIRacingTV 4 года назад

Thanks Jake!

@ryansoysal6422 4 года назад

Need more content with this beast

@Buzz-Entertainment 4 года назад

18:13 speed cameras BOFI: Accelerate hard

@danielevans8000 4 года назад

I've got a nardo grey 1.6 mk2! fantastic colour for these little cars

@SomeOne-lc2pc 4 года назад

17:28 that back cup holder from the nb is a killer 🤣 pops open on me every drive I take too

@MrOvershoot 4 года назад

Mine does that too & with only 146bhp, hurts when you slam your arm down on it

@jonathanchung7209 3 года назад

Such a cute car.

@wholelottamiata6976 3 года назад

My buddies turbo NA was making 308whp and we were inching on a 2019 SS camaro from a 40 roll.

@Ai.LojTari 4 года назад

what a beuty

@kevoss74 Год назад

Good content, I’ve just bought a NB, beginning to think I should’ve bought NA

@sketti2543 4 года назад

Man you guys have little to no subscribers? Your time will come. Keep grinding I could watch this shit all day. Btw how much was spent on this build? This is something i am looking to do in the near future!

@BOFIRacingTV 4 года назад

Spread the word, some mad stuff to come.

@user-xy5eq9rr3n 4 года назад

3.3 ring&pinion really changed the car even with my 250whp stock motor miata👍🏻

@BOFIRacingTV 4 года назад

We love it, modernises it a fair bit

@300zxdriver 4 года назад

How much boost are you running?

@user-xy5eq9rr3n 4 года назад

300zxdriver Full boost on 13.5psi. Going above that number can be risky imo

@jackhills7474 4 года назад

17:27 flap mode engaged

@funboy666ganja 4 года назад

active air brake

@zachbochek 4 года назад

Skid nation includes the best treats with the reroute kit

@tropicalparsoon 4 года назад

What's the lifespan on 4th gear going to be with that final drive and 300bhp??.........🤔😲

@alfiebrotherton935 2 года назад

Long

@sidewayssam 4 года назад

Skuzzle has just announced he is shutting up shop, which is a crying shame, i am mates with him and carl at cbs autos in nelson is a very good mate, carls track attack mx5 is a beast, we raced ( i have a 996 911) and we got to 155 lol .he has very solid wings on his, was rock solid.

@vkotis 4 года назад

Yeah was gutted when I heard he's shutting down his shop. It was my go to place for mapping. And Nick is a cool guy.

@gbmgaming 4 года назад

Me: You can't scare a cupholder flap with boost. BOFI: 17:27

@DaBest21101 4 года назад

Ricer miata and sammit gotta watch this video.

@DonRoasteh 3 года назад

Anyone else weirded out by how he kept looking at the camera and not the dude while asking questions? Haha

@BOFIRacingTV 2 года назад

You love it

@landon390 4 года назад

🔥🔥🔥🔥

@vampricgoldfish 3 года назад

Any news on when the prototype 3.0inch exhausts go up for sale? and pricing? would love to buy a full turbo set from manifold to exhaust tip

@JimmyHasNoGarage 3 года назад

talks about the engine, never once show a close up of the bay :(

@ryanhummel5324 3 года назад

What about the first part of the video?

@caza00caza 2 года назад

I'm here for a good time not a long time

@BOFIRacingTV 2 года назад

🙏

@crawford323 3 года назад

What about a Zero Zero ejection seat? It would be handy.

@mudkip863 4 года назад

Question, either i missed it or it was not mentioned in the video. Since this is stupid fast what suspension & brake mods have been done? I think i saw coilovers during the engine bay shot but not 100% sure. Amazing build definetly gave me some ideas for my NA.

@BOFIRacingTV 4 года назад

SVT Brakes with Roddisons Pads, Miester R CRD+, Whiteline Anti Roll Bars, Braided Brake / Clutch Line

@TechTokOffical 3 года назад

Dude running the camera looks like a turtle

@supercrewe Год назад

Come to Minneapolis to see my 360 atw built MX%

@bradtyson 3 года назад

Wouldn't every gear ratio be changed with a different rear ring & pinion?

@X7rocks 3 года назад

What was that trick he was talking about with the wideband??

@kyracing8902 4 года назад

😂 good video

@AMDcore1 3 года назад

What was the song used for the glamor shots please?

@droboyjr 3 года назад

I think you should have focused more on the engine when he was talking about it more than pointing the camera at the owner. Just my .02

@hksjoshua 2 месяца назад

So max realistic speed of like 140mph cool beans

@thefailxtreme 3 года назад

I am not native english speaking and did not quite understand one part. What do you mean with seamwelded front to back?

@raviolitrail 2 года назад

Looks like it hits 75mph pretty quick.

@inigolol1 4 года назад

Carbon miata rear trunk?

@Redbaron_Gaming 10 месяцев назад

Looks decent other than the headlight conversion.

@mikedzialoszynski6692 4 года назад

5:56 "the can check gauge"........ i would like to know more about what that is

@BOFIRacingTV 4 года назад

We'll do a full video on them, they're absolutely fantastic retrofit digidashes that fit in the oil pressure gauge hole in the cluster

@kevinsaeed9817 2 года назад

Which ducktail is this on the car?

@Kyle-nz9wl 4 года назад

I don’t think this was mentioned din the video but how much power does this beast make?

@ionicbreeze 4 года назад

I think he said around 300whp

@SHLOCK8241 3 года назад

Real men keep the top down while doing 175 and not with a hardtop

@ohnoitisnt 2 года назад

While i agree, youd probably need another 100hp to get there!

@justinjohnson623 4 года назад

Wish I could see it hit 175mph

@Rex7767 4 года назад

When's the 3" exhaust going to be available to buy and will it be a full v-band system?

@BOFIRacingTV 4 года назад

About 3-4 weeks, we've used V Band systems before and they're actually a pain to work on and they sit lower than they need to (VBand lip +Clamp) so this system is slipfit with clamps that keeps it as high as possible, easier to use too.

@Rex7767 4 года назад

@@BOFIRacingTV ok well I have your low mount system and as you know downpipe is V-band. So will it fit ok with your manifold, downpipe setup?

@romoalex 4 года назад

OONOS

@VeryMuchSaab 3 года назад

That saab 9-3 sport combi though....

@BOFIRacingTV 2 года назад

phwoar

@MatthewGerrard-yf6cq Год назад

Anyone know what size those wheels are?

@BauregardSenior87 2 года назад

I've just started my MX5 journey with a junker NB with rust, dents, scratches and 120k miles on the clock, my budget is next to nothing and everything is taking me a lot of time. I've had it for almost a year and only just got the basic servicing and MOT stuff done.

@Gxkrv 2 года назад

Your ahead of most mx5 owners if it’s passed it’s mot😂😂

@dracolich345 9 месяцев назад

How is it now?

@GathersNoMoss 4 года назад

It looks like a good setup, but there's just one thing about this build that puzzles me: If new rods have been fitted, why not fit forged pistons too? Looking on BOFI's website, they don't look prohibitively expensive, compared to the cost the other parts fitted to the car.

@seshboisam1141 4 года назад

The weak point for the Miata has always been the rods they don’t like to see more then a few psi but stock pistons have been known to hold up to 30 psi before they see detonation. If your boosting on a budget it’s common to just upgrade rods and save the extra cash for a better quality turbo kit. Upgrading the pistons is for someone looking to have that extra piece of mind it’s only a couple hundred dollars more but if your going big boost then upgrading the injectors, pistons, rods, oil pump and fuel pump is the way to go.

@BOFIRacingTV 4 года назад

The block was used with a GT2560R first, so pistons were less of a requirement back then

@GathersNoMoss 4 года назад

@@seshboisam1141 I didn't know that the stock pistons were that strong. Thanks for the info!

@apetska4817 3 года назад

That miata's front end showsvisible confusion

@street_fighter_mx5 2 года назад

Very nice do the 3.3 gears whine? Also check my build in the USA

@BOFIRacingTV 2 года назад

Nah they're cool

@theodxs 3 года назад

What is the exhaust?

@eatmyshortsgirl 4 года назад

uhm.. no complaints at all

@christopherwilliams9328 4 года назад

Where did you get the hood vents

@BOFIRacingTV 4 года назад

They're GC Fabrications vents

@poseidonasas 3 года назад

Is the ring and pinion noisy during accelaration and decelleration??

@BOFIRacingTV 2 года назад

no it's dead quiet

@Abevlogsofficial 3 года назад

Where did he get the overfenders from?

@BOFIRacingTV 2 года назад

ebay 😅

@Throttle.Monkey 4 года назад

Any plans for some mk3 content?

@BOFIRacingTV 4 года назад

Definitely, got a mk3 coming end of July

@owenledge 4 года назад

Ahoy mateys!

@ela_giwrgi 4 года назад

this is a car channel not a boat channel

@jeffreydevries2459 4 года назад

no its called bofi racing not boatfi racing

@archiepotts164 2 года назад

Bro has that 1.6 oonos

@kaykaliszewski555 3 года назад

I have watched a little bit of your video and i can say for myself, that your selfie kind of perspective is annoying. My advice: Do not film yourself, film the owner and the car. Make more close ups on the enginebay and stuff like that.

@MagmaBmx 2 года назад

Also maybe incorporate a go pro head mount to give the viewers a feel for the drivers seat

@naseeb46 3 года назад

My dream is to build a 200 MPH miata!

@BOFIRacingTV 2 года назад

Do it! Check gear calculators on K miata

@inigofilm 4 года назад

rotas 15x8 et0 or 15x9 et 20?

@BOFIRacingTV 4 года назад

15x8 ET0

@Nasonix2 3 года назад

I just realized... How in the world is he running 20+psi with stock fuel pressure and some 640's?.... That thing would be out of fuel at 290whp on gasoline. More like 15-17psi at most?

@PhantomShane914 2 года назад

640s will flow probably around 400hp at 43.5psi lol. I pushed 420cc rx8 yellows to their limit around 290whp.

@4lairr 4 года назад

i've got a 4.3 rear end in my miata and wound it right out only one time. 145 150 ish. That's plenty fast in a miata for me...

@shinobi1203 4 года назад

5spd or 6?

@4lairr 4 года назад

@@shinobi1203 i've got the 5 speed in my car. Turbo charged with xida coil overs big front sway bar. Super twitchy alignment. autocross/streetcar

@shinobi1203 4 года назад

@@4lairr damn, u reving your engine to the stratosphere?

@4lairr 4 года назад

@@shinobi1203 I think I've got it set to 7200 on a 225/45/15 tire the speedo stops at 225km but gps speed said i got a little more out of it. Not what my car is set up for at all but i cant imagine getting another 30+mph out of it

@LxrdGmail 3 года назад

Hoon Jung the 6th fear in the 6 speed is shorter than the 5th gear in the 5 speed tho

@savvas5548 4 года назад

what about engine management?

@BOFIRacingTV 4 года назад

MS Labs MS3 Mini

@kingofwestpalm6350 4 года назад

Do you sell to the US?

@BOFIRacingTV 4 года назад

We sure do, worldwide :)

@Gn0m4 4 года назад

Who is the owner? I would like to see a dynoplot to check torque curve.

@BOFIRacingTV 4 года назад

We're getting a dyno in 3-4 weeks so we'll be posting figures shortly after

@Gn0m4 2 года назад

@@BOFIRacingTV no news?

@TheCSHeckler 4 года назад

It's got the most development of the fleet? He opens the bonnet then hardly bothers to film it?

@BOFIRacingTV 4 года назад

More video to come on this, bigger pistons, beefier rods

@4RMS7TRONG 4 года назад

I bet it would do 180 if the headlights weren't fixed up in position ;)

@BOFIRacingTV 4 года назад

😂

@TheMaroth 3 года назад

175 mph sounds a bit much for a OEM Gearbox and a 3.3 Mfactory. Running a E92 BMW Gearbox and a 3.3 M factory on my EFR 8374 500 HP MK2.5, which has a longer 6th gear as any of the OEM Miata gearboxed and GPS im hitting 170 mph. unless it runs till 8k rpm ofc...

@PhantomShane914 2 года назад

A 3.636 torsen mated to a factory 5 speed will top 171 revving to 7400rpm. 165 with a 6 speed. I'm sure a 3.3 will easily go 175

@screwdajuice 3 года назад

I want to put two 50 digit locks around those earrings

@supernite1183 3 года назад

Sick content u should make a tik tok !!

@MrOvershoot 4 года назад

How tall is Matt? I'm 6'3" or 191 cm and have had to do the Foamectomy on the seats to fit in so I like the look of that seat if Matt is a real size ;)

@matthewloveday3988 4 года назад

im 5'11 buddy, i did the foamectomy before i ran bucket seats, you do gain alot of room buy putting the seat alot further down and back :)

@poseidonasas 3 года назад

@@matthewloveday3988 did you have any issues with the m factory 3.3 ring and pinion with noise after installation? Also what did you do with your speedo drive?

@matthewloveday3988 3 года назад

@@poseidonasas no a small noise at 40ish but nothing bad, I went to a race dash with GPS speedo because I could never get the speed correct on the standard clocks

@jaccboyjohnny2805 3 года назад

fenders < arches 😂😂

@percylfc7165 3 года назад

Could have been a great video, if the youth new how to use a camera 😜😜😜

@joshuwacampbell836 3 года назад

........ so where'd the 175 MPH go?

@shaunsheep8252 2 года назад

Please keep the camera still

@saapergis7609 3 года назад

22psi= 1.56bar, on stock pistons

@Revmatchdownshift_ 3 года назад

175? That's a Ripley's

@High_Desert_Tanner 3 года назад

I can't imagine having to shift left handed... Seems so awkward to me

@manavpatel4484 3 года назад

I can't imagine changing gear right handed, now that is weird 😂😂

@High_Desert_Tanner 3 года назад

@@manavpatel4484 nah... You got that backwards 🤣🤣🤣

@megavidio97 3 года назад

I have driven both and you get used to it surprisingly quick actually

@gavindoran4394 3 года назад

Maybe it’s running 22 psi on stock pistons because it came stock with forged internals😱

@magnetic0314 3 года назад

What?

@lil_woody_420 2 года назад

Well, the pistons can handel 330-350 hp. Main thing destroying them is temperature. But the rods are the biggest weakpoint when trying to go for big power on the miata