MAC H

[98Blu4.6]

Okay if I get two high flow cats welded onto my o/r MAC H then will the check engine light still come on, I mean Ive heard both sides of this story and I am just really confused.

 

[Sick96Stang]

First off why would u want to weld two cats onto your O/R H-pipe? Second no your check engine light shouldnt come on if the cats are properly installed.