Hi All,
I've been searching all over the internet and couldn't find an answer for my problem. I have Saturn sky Redline with Magnaflow exhaust and K&N drop in air filter plus 3 bar sensors. My tune is stock for two reasons, first I had lot of KR (maybe its the fuel, sensors .. etc), second I was boosting so high at some points (around 30 psi).
My issue now is that even with the stock tune, I'm still boosting relatively high (up to 23 psi). After checking my scans, I noticed that the high boost happens when I let off the throttle, exactly when it reaches zero, the boost just jumps to high value before going down. I need to fix this is in order to boost more safely. If I add any more boost with this issue existing I will end up with extreme unwanted boost. Please help
I believe the below pictures are better than my English
Boost.PNG
boost2.PNG
Please find the scan attached.
Thanks