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      11-17-2012, 02:58 PM   #16
Second Lieutenant
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Drives: 335i Coupe
Join Date: Sep 2012
Location: Jax NC

Posts: 213
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Originally Posted by darkrider View Post
I just picked up a used JB+ on the classifieds. What seems to be the consensus on how much you can run over default before you start tripping tuner codes?
Before I got it, the car was running good (no codes) until I installed the JB+ 50% and I got leak codes. I was blaming the JB+ but it really was a boost leak. After I fixed the leak, I was able to run it 75% with no codes. I gave it a try 100% with the bypass and it was REALLY pulling but I didn't like the idea of bypassing the solenoid so I went back to 75%. Two Months later I purchased the JB4
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