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az5thgen · 08-12-2009, 06:51 PM

You will have to do it through a tune - GM will not release the program for cars that went from 18's to 20's. Ask me - I know! Just got the "Final" word from GM this morning.

Is Superchip making a FlashPak for this yet?

08-12-2009, 06:51 PM	#6
az5thgen Drives: 2010 1LT Join Date: Jun 2009 Location: Mesa Arizona Posts: 334 View My Garage	You will have to do it through a tune - GM will not release the program for cars that went from 18's to 20's. Ask me - I know! Just got the "Final" word from GM this morning. Is Superchip making a FlashPak for this yet?