Thread: Jb4 worth it.
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      09-14-2020, 10:10 PM   #1
moto111
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Drives: 15 mustang
Join Date: Feb 2018
Location: chicago

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Jb4 worth it.

So first bmw and it’s a 20 m340 love the car just would like to be in the 11s . The car is a lease so there’s that . I’m leaning towards the jb4 for the simplicity and safety compared to tuning their car .

Will I notice a big difference from stock to the stage 2 jb4 map?

Thanks for any input new to bmw period come from tuning 5.0 mustangs which were bullet proof on tune only
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