First mod

[Chuck Birnie]

Just did my first Mod. I put my Dynamax Ultraflow Exhaust System on. (Sounds great by the way.) As I was looking at the stock y-pipe I saw I had 3 cats. My question is if I went with the aftermarket one (y-pipe) do I have to have all 3 cats? Thanks for the help.

 

[Jeff C]

You actually have 4 cats, lol. There's only one aftermarket y-pipe, which is offered by Zabteck Performance - site sponsor - then there's the hi-flow cat which will knock the total number of cats down to 1. The Random Tech y-pipe that Zabteck offers replaces the 2 pre-cats, and the hi-flow cat replaces the stock cats with one hi-flow cat.

 

[Eric Pennal]

I highly recommend the mods Jeff has described. I've got the clean Y-pipe and a single hi-flow cat (plus a hi-flow muffler with dual exhaust), and I love the way it sounds!

 

[Mike Dziubina]

FINALLY!!! another member with dynomax!!!!

 

[Amber Clymer]

Ok, so can I get that list cleaned up a bit to take to my local exhaust specialist? LOL, seriously though can I?

 

[Aaron Yarbough]

Bootsy, contact Todd Z who is a member on this site or visit his website. He can provide the details on each of the aftermarket exhaust peices that he sells for the 07 ST.