sweetlou69

so i had a catless H pipe on my car and liked the sound and loudness of it. For emissions reasons i put on a catted prochamber. Sounds really good, just not as loud as i would like it. which longtubes are really good for adding some more sound or are they all about the same sound? also will any longtubes make me fail emissions or should i be ok as long as i keep the cats on?

mygt500

Keep the CATs on and any LT will help increase the sound. Check with your local emissions place and just ask but I am sure you would be fine with CATs and pass the tests.

mustangman02232

i have MAC LTs on my 3.8 with a MAC O/R h pipe, i had a exhaust shop weld 2 high flow cats into it, my car passed the MA emissions test no problem