Originally Posted by anidjare
You might be bleeding boost. looking at your sig, it looks like you have a blow off valve. I would take your car to a dyno to confirm the power gains, Walkedu started a thread on this. I am no blow off valve guru, but it apeared as if his was causing him to lose power.
just a suggestion?
I dynoed at 339whp and 377wtq on Harman Motives Dynojet with my HKS BOV. If you install everything right you will not have any problems.