derekhay316
Registered User
Just removed cats with 2" piping, replaced stock res with magnaflow 2" in 2.5" out, and removed mufflers. Am I now safe to add a CAI and 5% pulley or should I have 2.5" and 3" piping??? My headgaskets have never been replaced, my car now has 87,000 original miles on it now. Thanks.