So i installed my ams turboback system today and everything is fine but later all of a sudden i get i service engine soon light and i dont know why can someone tell me? Its a brand new 05 with like 1500 miles on it so i know it doesnt need to go in for service and its a straight pipe not a high flow cat.

 

You said it yourself, its a straight pipe. Without having a cat, it will set the code for catalyst inefficency.

 

so how do i fix it with keeping a straight pipe?and is it a big deal?

 

This is the easiest/cheapest way to do the fix....I did it on my car and have never had a cel since then.



https://www.evolutionm.net/forums/sh...d.php?t=114931