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My GMPP kit came with a spec sheet mentioning stepping up a size on injectors along with the part number. I would like to know if anyone has done that and was there a noticeable benefit?
Never heard on that before with GMPP Stage 2. Only time I've seen injector mods is for E85 tunes, and then it's usually just adding a 5th injector.
241 - 241 of 241 Posts