Originally Posted by Merko
At part throttle it will rev past 5k while boosting I think (have to double check tonight but I'm quite sure I've done it before).
I'm running a GFB bypass valve which should be a high quality unit. I've had no problems with it.
Also running wastegate pressure will fix it as if I drop boost to 10psi it stops cutting.
P.S. Rob you have an email regarding the chip
Which GFB valve exactly? I did not see any bypass valves for the GC8 on their website.
Explain specifically how your one-way valve on the MAP sensor works.