I don't mean to thread jack, but I was running Cobb stage 1 before I had the VRSF DP installed. After they were installed, I didn't get any codes and they still didn't show after driving for a few miles. I installed stage 2 to be on the safe side. Not to complain, but anyone experience no code also when installing DP? Just wondering why some ppl got the codes and I didn't. I don't have the DP fix btw
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