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Discussion Starter · #1 ·
I see a lot of people talking about replacing the second cat with a high flow or removal of it and using a straight pipe. My question is, if we remove the 2nd cat will we throw engine codes? Also, should we just replace both cats with high flow ones, and will that cause problems with the ecu's readings?

Any advice or answers are greatly appreciated.

BTW, the tune by the Texas company is supposed to gain 18 fwhp and 19 lbs of tq. That's what the company quoted me.
That much torque will be greatly felt 😍
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