Getting exhaust soon (need some advice)

[SouthrnMaro1]

[img]graemlins/rock.gif[/img] Two weeks till school gets out and I made an agreement with my dad I wouldn't start modding till summer! I'm going go with a carsound cat,cutout right before muffler ,40 series original flow, and turndowns. It's going to be 2.5 pipes and I would like to know if the cat should be 2.5 both ways and is summit the best place to get the cutout? Thanks!

[2002firebirdguy]

Sounds like a good plan. Make sure you post sound/video clips. I believe the cat is 3'' in 2.5'' out. If I'm wrong, somebody please correct me on this

[2000camarostud]

yeah you might need to get a 3" inlet/outlet cat...because aftermarket universal cats are usually the same diameter inlet and outlet.

[fabolous24]

yea i just ordered a 3" cat for mine. its 3" in and 2.5"...you have to take the cat to a muffler shop and have a reducer welded onto the outlet side to make it 2.5" instead of 3".

[SouthrnMaro1]

I just did a search on the 40 series and a lot of ppl say it sounds bad!?!? What is the sound difference between the 80 and the 40. Is the 80 much louder?

[Turbo V6 Camaro]

you need a v8 for the 40, the v just dont have the exuast flow the 8 has