GM Performance Parts Turbo Upgrade Kit
Senior Member
Joined: 08-07-2011
Posts: 553
From: Montebello, CA
No I was just driving around 30 35 and the speed3 rolled up next to me, I was in D the whole time. We were driving next to each other for like 10 secs then he took off so I took the challenge and took off as well lol. Flew like a rocket the whole way it felt good. I've never had a car with this much power. I just have to be careful it's gonna get me in trouble lol
Senior Member
Joined: 08-06-2008
Posts: 1,761
From: Grand Haven, MI
Yup a speed3 :). Probably a 07 or 08 model. Yeah from a roll we were going maybe 30 35mph. Had to avoid some traffic for a few seconds before we both had open lanes. He had a custom exhaust it was loud so i know was gunning it, but he never caught up I was seeing 20 or 21 psi at the time. The drive seemed very surprised, probably had never even seen a HHR SS until then, once we got to a red light he was in the lane next to me but he hung back to check out my car.
true that 
very good point 
Senior Member
Joined: 06-22-2010
Posts: 387
From: Wisconsin
I am using the yellow spring with GMTU and no problems. To be honest there are some people that will tell you green and some will tell you yellow. I have been happy with the yellow. The springs are super easy to swap if you are experiencing any problems.
Senior Member
Joined: 08-07-2011
Posts: 553
From: Montebello, CA
Well I'm not sure but I think it's not holding the boost like it should. But I'm just worried to swap to yellow because I read a thread saying that with the yellow spring our stock pipes can crack or even burst. :/
Senior Member
Joined: 06-22-2010
Posts: 387
From: Wisconsin
I wouldn't worry about that untill you get a trfecta or hp tune. I am pretty hard on my car and stock pipes hold just fine. That being said I have aftermarket hahn intercooler and charge pipes sitting in my room (need to find time to install them) in anticipation of getting tuned next year.
Senior Member
Joined: 11-07-2012
Posts: 104
From: West Virginia
Trying to avoid spending time reading through the 59 pages on this thread... Can someone post everything in a single post that I should know and that I should inform the installing tech regarding this turbo upgrade...
