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  1. Question about the RIPP SDS and Grey Box

    I have had the RIPP SDS and Grey Box on my car now for about 1500-1600 miles. I was told "at first" that you would throw 300 codes(i.e. P300, P302, P304) which are cylinder misfires. P300 being multiple cylinder misfires, P302 being cylinder 2 misfire, etc. After this amount of time, I am still...