[opponheimer]

Originally Posted by Paul2x

Get a different turbo.

I had the exact same issues, but worse... boost would climb to 1.8 + if we kept our foot in it.. More boost w/ more rpm. no way controlling it what so ever.

We tired everthing in the book.

-Removed Boost controller (less variables)
-tapped different boost soruces. (To see if acuator would open at different times)
-Switched to HKS acuator. (no better) , adjusted length to look at stroke and movement.
-Removed Acuator completely and saftey wired waste gate door open: No Change!
-Pulled Turbo, ported wastegate port and surrounding area. A little better. but sill 1.7-1.8 bar..
-Pulled turbo again, more porting, flange and turbo flange. Mildly better.
This was all with the wastegate port WIRED wide open the whole time.

Ended up just pulling the dam thing.

-Stock turbo back on , held 1.0 bar all the way to redline.

My guess is givien the right cam' set up and few other supporting mods, the Garette with a internal gate's design is just crappy and can't flow the amount of air need to controll boost. Everyone that worked on the car han Never seen anything like this. Would it have happened with the HKS version (GTRS)? I guess i'll just have to drop 2k and find out....lol

Good luck

Thank you,