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B4C · 09-21-2016, 04:31 PM

If your going to up the boost just do the gm stage one kit for it. My buddy started with that on his 08 hhr ss and then went up to 28lbs before it decided to drink all the coolant.

09-21-2016, 04:31 PM	#8
B4C Join Date: May 2007 Location: Jim Thorpe PA Posts: 2,134 iTrader: (1)	If your going to up the boost just do the gm stage one kit for it. My buddy started with that on his 08 hhr ss and then went up to 28lbs before it decided to drink all the coolant.