B58 JB Plus Quick Install Tuner ....

Andrew4Supra

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freeform911

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I've also thought about get the jb+...
Not alot of info pertaining to the supra though...
Alot of bmw owners seem to like it though...
 

Sigg

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Hmm very interested as well....
How much boost is too much for the the turbo I wonder.
 

freeform911

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I think I read the jb+ only gives 3psi over stock at max setting...
Also read some users found d the throttle to feel "jerky"?
Don't know...but for $200 it might be worth trying...
Can't by much for this car for under 200 bucks...lol
 

Benjilis

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Watched a video of a guy that said he had it, liked it, then upgraded to the JB4.
if you upgrade to theJB4 within a said amount of time, you get the $200 off of you send back the chip
 

Sigg

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I ordered one on Tuesday. Figured for $200 bucks its worth giving it a try. Scheduled to be on my door step on 3/22. I will post my results.
Keep us updated!
 

redspencer

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I recently had mine installed and it makes the stock tires lose grip at 50-60mph at WOT when it previously wouldn't have when stock (and induces lots of grins). I adjusted the dial on mine to be slightly below the max setting and I have not yet noticed any issues with jerkiness, shift delays, etc.

From reading multiple threads on the BMW forums, the DME still seemlessly manages the AFR and ignition timing while boost levels are increased from the JB+. Hopefully the JB+ will remain issue free when the high humidity and temps creep up during the summer timeframe. At the moment, it's easily worth the MSRP if you plan on sticking with pump gas.
 
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Benjilis

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I ordered one on Tuesday. Figured for $200 bucks its worth giving it a try. Scheduled to be on my door step on 3/22. I will post my results.
FYI. It may come later. FedEx has been a shit show and backed up due to bad weather and covid.
 
 




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