Honest JB4 Review - For BMW G20 - Worth the $?

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Just a short review of the recent JB4 Purchase for my 330i. Do you think it’s worth it?
burgertuning.com/?rfsn=577831...
JB+ Link:
bit.ly/3prnb7W
JB4 Link:
bit.ly/3fZRL5v
MHD OBD2 Wifi Adapter:
bit.ly/2T5Yim8
Downpipe
www.vr-speed.com/ref/218/

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Опубликовано:

17 июл 2021

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Комментарии : 64

@rearwheeled8147 3 года назад

You can purchase JB4 or JB+ in the description!

@zero082294 Год назад

Hey man I saw you have tested both the jb+ and the dinan sport tuner. As they both do similar things and cost about the same which one would you recommend more? With Which one did you see greater gains of power

@zadeh79 2 года назад

Dragy doesn't subtract 1ft rollout. So that 5.0 second run, really translates into a publishable 4.7 seconds, as most major car reviewers like Motor Trend/Car and Driver, would consider.

@rearwheeled8147 2 года назад

Good point

@mpfefferlen Год назад

Love the videos, thanks! A quick question. Are you running E85 for the JB4 run with map 3?

@rearwheeled8147 Год назад

Yes, I’m in California where I’m limited to 91 octane so definitely best to improve the fuel quality with E85.

@b_checkmeout9974 9 месяцев назад

Hey how is your car running since the jb4

@zadeh79 Год назад

The just released xHP transmission tune for the 330i G20. Makes a huge difference with my custom engine tune, cause it feels like it freed up like 20-35whp (~like 2-3 PSI boost), depending on what drive/shift mode your in. Sport+/S mode is insane - in this mode, default xHP shift programming is kind of wack (in D/S mode it likes to hang out around 4K RPM), but when I drive in M, manual mode, I keep revs low around 2K-2500RPM, and still have extraordinary throttle response and gobs of power; still pulls hard at 90+MPH. xHP will definitely help with Jb4 too. I did a quick review on my channel.

@SageXteriorCleaning 9 месяцев назад

Hey bro I’m looking to do the same exact thing on my car. I have a 2014 550i, would u still recommend it ?

@JeffTrop 2 года назад

KingJaffeJoe The reply below is mostly correct. I just came across this video so apologies if you've purchased another tuner or if you have the JB4, great! The reply below is mostly correct. But the ECU/DME NEVER see's the JB4 as it intercepts at the sensors so boost levels stay stock with no history of anything abnormally high. Unlike a flash where this is not possible and they can see it's been flashed by looking at the flash counter. The only way to read actual boost would be through the mobile app/data cable since it reads from the JB4. Wanted to just clear this up because there is a lot of confusion and missinformation out there. @rearwheeled Great review! Thanks for taking the time to show the JB+ vs JB4 difference along with the JB4 mobile app. The B48 is a great engine. B58 is a monster! But gains are to be had on both for sure👍

@lowereastsideastrologist7769 2 года назад

Were those map 2 runs?

@MrJoe1627 3 года назад

How is the regular driving when using say map 2 or 3 is it still as smooth as stock?

@rearwheeled8147 3 года назад

Great question to bring up for the comments! Map 2 runs extremely smooth. I was surprised that it never felt jolty or confused. I haven’t been running map 3 for too long but it’s a bit more power ready and can feel a little jolty. It reminds me of jb+, so not bad but not as steady as Stock.

@dickvre 2 года назад

Hi Rearwheeled, I saw your videos, was happy to see JB4 works on the latest models and ordered it last Monday. Got it in 3 days (wow) and installed it on my G23 420i today. Incredible what a difference it makes, a lot faster from 0-60, thanks for the heads up 👍 Now I have a question, in map 1 2 3, I feel the increased torque and get the better 0-60s, however in map 4 (20psi max I believe) 0-60 is slower Do you have experience with the higher map settings? Hope to hear from you Greetings Dick from the Netherlands

@rearwheeled8147 2 года назад

That’s great to hear! I’m sure you’ll enjoy the extra performance

@LifebyDesign 2 года назад

map 4 is an absolute PSI map, you need to run map 6 custom settings. basically map 4 is just targeting 20psi at all times

@dickvre 2 года назад

@@LifebyDesign Hi Derek, I’d like to edit the map 6 settings. I’ll dive in to it soon. Do you know an instruction manual of some sort where I can read how to do it? Regards Dick

@Desilv 2 года назад

Hi DICK! Waar heb je je jb4 gekocht en is het gewoon plug en play.. ? And is het ook echt een chiptune wat was je pk winst ?

@franklinpark4475 Год назад

Does changing the map change the exhaust note? Can I tune for pops and gurgles?

@landonedmond5478 Год назад

Bm3 is your best option for that, you can get burble tunes and rolling anti-lag and stuff like that. Jb4 on the other hand is just tricking the motor into turning up the boost.

@angelabartolone578 2 года назад

Could you use the JB+ on a 2021 330i? Is it also fine to use regular fuel when using it. Also your car is putting up nice numbers especially with the rwd model. I'm sure it's a lot of fun!

@rearwheeled8147 2 года назад

Yes, my car is a 2021 330i

@Chuk13838 2 года назад

Hey there. I’ve also got a 2021 330i and have been running the JB+. It’s a lot of bang for the buck, as our friend here says.

@shubdeepsingh8376 2 года назад

Hey I also have a 2021 330i with a jb + on regular 93 pump gas . I recently dragy my car and got 4.7 best 4.8 consistent with catless downpipe and the jb+ and 3 o’clock position

@Starscream8896 Год назад

@@Chuk13838 how does it feel compared to stock?? Does it make the car feel too aggressive? Or is it smooth like the stock tune

@Chuk13838 Год назад

@@Starscream8896 it feels smooth like stock. No complaints.

@frankiestevens2206 Год назад

Is it the same for the 2019 G20 M340i xDrive & Is installation the same as your installation video

@chigga25 Год назад

yes, this jb4 is for the b48 AND b58 so you're all good. I'm running this on my 19 330i with map 3 and 3.5 gallons of e85 and 93 octane.

@merikhayrabiyev9063 2 года назад

I just got the jb4 on my 2021 330 awd do I have to connect it always on my phone on my in order to turn it on

@rearwheeled8147 2 года назад

Nope, you just need to have jb4 connected to the car and it will always be on. Your phone is only to read your logs and change your map.

@zadeh79 Год назад

Do you feel an improvement with throttle response?

@rearwheeled8147 Год назад

Yes , a slight one definitely

@adamramadan7073 4 месяца назад

so is map 2 jb4 more power than jb+?? looking to run 93 but don’t know if it’s worth spending the extra on jb4

@MrEliteLolz 3 месяца назад

im tryna find out too, i just got jb4 instead. do you know if you can run map3 on stock parts with 93 octane?

@albertryans4892 6 месяцев назад

When I ran 30% E it’s not shifting and and it bogs down. Do you happen to know why this is doing that?

@edwardgutierrez1422 5 месяцев назад

Should run about 20-25% e if stock.

@SamM-tc3hd 3 года назад

Would u recommend leasing 2021 m340 or buying 2020 m340? Just for the exhaust note 😂

@rearwheeled8147 3 года назад

Go for a 2020 M340. Unfortunately the 2021 Model lost a lot of the sound. I test drove one before getting my car and was underwhelmed. The 2020 sounds much better.

@joem914 3 месяца назад

Trying to get the most outta that 2.0 inline 4….

@zadeh79 2 года назад

Are you getting wheelspin on your launches?

@rearwheeled8147 2 года назад

Rarely, the Michelin PS4S are pretty great at gripping. But if there’s some gravel I’ll get a bit

@lowereastsideastrologist7769 Год назад

@@rearwheeled8147 Are you lowered? My car I get tons of wheelspin, even under light/moderate throttle @ 30 mPh, even a bit at 60MPH. Im custom tuned E85 though. I definitely have to turn DSC off

@kolourblind3124 18 дней назад

I dunno I’m not a journalist but on my first attempt in my 2020 loaded xdrive was able to easily clip off a 4.46 on my draggy and I know I could do better

@Kingjay19 3 года назад

Quick question ..I have a lease 2021 330i is jb4 safe and undetectable by the dealer ? I dont want to void the warranty

@rearwheeled8147 3 года назад

It’s not undetectable , if bmw really did some digging they can find that you’ve been running extra boost. But would they check? Most just do the oil change and quick warranty service then let you go. I’ve already taken my car to bmw for an oil change and had no issues. Plus warranties do not work that way. They don’t just “void” your whole warranty but they “can” refuse replacing a certain part, let’s say a chargepipe, because that could’ve been affected by jb4. Will they actually refuse? That just varies on how strict your dealership is and how much they dig. Still, It is safe, it’s been used by plenty of Owners throughout the years but you also have to do your part and use it safely and according to the recommended perimeters.

@Starscream8896 Год назад

@@rearwheeled8147 what are the recommended parameters or how you find them then