Quote:
Originally Posted by KAP8
I just ordered a JB4 for my F32 435i as I'll be out of warranty in 600 miles. They said it will add 30/40 horsepower and torque on my MPPK equipped car.
If it does and if it is indeed bulletproof and doesn't cause any problems, I'll order one for our ///M40i.
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So far so good, 5 weeks in and not a problem for
But this is my 3rd JB and never had an issue