My kit arrived October 4th 2013 and came with 600cc injectors. I do remember seeing IDC of 90% during the tuning but only in areas that were running way rich. In the final tune I don't remember seeing anything above low 80s. On my kit I know there is plenty of injector because the caned tune was running way to much fuel to the engine. My kit is also at 406whp so they might not be enough for 500+ but for my car they are working great.
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