I know on my Audi TT with DI there was some concern with heavy deposits and cam follower damage. Im not sure if the Z was to get DI that that means it would have the same prob with the cam but the deposits will probably be there. But there has been no evidence that it is harming the car. I guess you would just need to run some type of cleaner every so often.
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2010 LS3 C6 Silver coupe corvette
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