Well on my way home this morning I layed into it going down 422. I have a dp and gms1. Just replaced my turbo a few days ago at work since it took a ****. Boost climbed to 30 psi... Any input please

 

Particularly hot day?

 

Cat issue... Wastewater issue........

 

faulty gauge? your relatively close to byt shoot him a PM and have him check it out.

 

30 psi is way more than GMS1 would command.

 

is it a catless downpipe? Cause it almost sounds like a plugged cat. If not .....might be a wastegate issue . Althou it should come from the factory at the right adjustment .....maybe they screwed with it ....or theres a actuator issue.

 

I just put the new turbo on a few days ago, its catless. I have new plugs at work I forgot to put in. Back fires sometimes under load

 

I get some pretty high spikes from my GMS1 sometimes, and Im completely stock otherwise. The weird thing is it seems to go slower when it spikes. The highest Ive seen though is about 26 or 27.

 

Wastegate rod is set wrong or not working? I know you know this, but definitely take it easy on the car until you get her fixed. If you could climb under it and get us a pic of the turbo and supporting tubing, we can maybe find your issue.

 

iam maybe 1500 feet from sea level and my gms1 will run a constant 23 psi any weather condition and spikes 24,25, maybe 26 for a brief milli sec. its weird though cause for a long time it would always hit 20 never go over. but iam happy. and the car runs great.

 

You replaced your factory turbo? Was that at your cost?

Put your factory dp on and make it gm problem..
IMHO specially since you went with gms1 like myself... That's what warranty is for..

 

Haha it didn't cost me anything. It was covered under warranty so I got paid to replace it. I already had the catless dp on it. I love the dealer I work for

 

Didn't realize you worked for them lol.

Get paid to work on your own car. That's the dream.

 

I didn't realize you were a tech. Keep us updated. I'm curious what the solution will be.