Stillen headers / hi flow cats
Hello guys, I have a couple of questions. I was thinking about buying the stillen headers and high flow cats. Are they really worth the money? The only thing I'm worried about is if I buy the high flow cats and they trigger the O2 sensors and my check engine light stays on, how do I get it off? Also, any proven dyno results in HP and TQ gains? Thanks for the input!!
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