Originally Posted by hellomyBMW
I appreciate your feedback ign335i. However, I already uninstalled JB4 and am waiting upon COBB. I'm not sure how I feel about stacking JB4 with COBB. At least not yet... There are other mod priorities first before I use both tuning.
Also, I have not updated ISO yet because I wasn't sure how return policy will be at Burgertuning after cutting the 2 diodes, so I have not touched this yet.
Let me try COBB first and then I will see which tuning I want to stick with.
Too bad... If you have not experienced the new ISO firmware you have not experienced the JB4 G5.