I went from cats to gutted cats to RTs and finally no cats. I did dynos after each...difference is about 10rwhp with tune. About 5hp from no cats and about 5hp from tune....No cats allows for more timing to be added in tune.Z06-Dave said:I was thinking of throwing the cats back on, I do have a set of high flow's I got with my Kooks. But I am afraid I'll lose too much power.
How will the cats effect my tune? I'm not going to pay for another tune after I install them,