So my CAT is making loud noises from what looks to be semi loose rusted springs from where some bolts are connected to the piping. I finally found the source of it last night. I'm wondering if I should just remove the cat all together, or should I really replace it. In the future I planned on getting a performance muffler and I'm not sure if I should upgrade the piping.

Keep in mind I've got a GSR head and other bolt-ons already installed. Any help is appreciated guys!

 

I'd just get a test pipe and be done with it.

 

Tp

 

try now the test pipe!!
more airflow for the exhaust....

 

Yea the test pipe idea sounds like a winner. However I'm concerned about emissions regulations. See when I was in Florida we used to straight pipe exhausts all day. Never was an issue. But up north ya'll got all these rules, and e-checks, and crap. I don't wanna have to do this twice just to stay legal.

 

thats the down side....

you got pm!

 

hey godspeed i saw you on i84 this morning around 830 heading westbound...

 

Hahaha! Bro because you said you work for brown I've been scoping ever single truck I see looking for a friendly wave.

Yea I'm always on there around that time heading to work!

 

look out for a smaller sprinter

 

Get a universal fit cat from summittracing.com

 

Just gut the cat so you still have the 2nd o2 and where I'm from it's still legal . You need to check your state requirements .

 

i would get a new cat. when you get another exhaust your gonna get really annoyed with the sound. and plus we dont need regular cars adding to the f-ed up atmosphere. if its not a track car you shouldnt be f-ing up our planet more.

 

Ladies and Gentlemen, the verdict is in. Just dropped by a Monro muffler shop today for a free inspection. Turns out I'll be needed a whole new exhaust system. I'm working on some DC headers from my boy now, but will get a magnaflow CAT and prolly a racing medallion muffler. All the connecting spots are rusted out and corroded. Its bitter and sweet at the same time. That money could have gone to a turbo.

So here's the question... 2.5" piping? or stay at 2" which is what I think the factory size is.

 

2.5" all out!!!
LOL!

thats what im using right now..
it pulls great!! still torquey!!

 

Word? That's what I was already planning, but wanted to get some opinions. AIGHT!!!

 

2.25" pipe

 

2.5 is your best bet. everyone i know with any knd of bseries goes with a 2.5 what is the factory size?

 

2.5 ... check out my pics