Quote:
Originally Posted by Darkstar87695
hey everyone, I know these might seem like dumb questions but I am not sure of the answers.
1) Are x-straight pipes legal in all states?
2) what do high flow cats do?
Thanks
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1. An aftermarket Xpipe or Ypipe is legal. I'm sure you can find a rule saying that these are illegal in some form or another, but for all intents and purposes they will be 100% legal.
2. They are much higher flowing replacements to the restrictive OEM cats. They are an EASY 10-20rwhp gain depending on the type of dyno you use. I haven't seen anyone make less than 10hp to the tire, even on the smaller VQ35HR motor.