getting new cat, which one?

[sibble]

Pace Setter Hi Flow Cat 2.25" 3.8L max
or
Pace Setter Hi Flow Cat 2.5" 3.8L max
or any other suggestions?

right now i have a borla catback

[sibble]

or 2 1/2" Random Technology Highflow Catalytic Converter ?

[Bluebird]

At least 2.5"
Or a 3"

[redthunder96]

I would say get the same diameter as your exhaust system to eliminate a bottleneck.. So that would probably be 3".. But if you don't have headers or plan on getting them, then you might not see a difference between 2.25, 2.5, or 3".. I'm not sure of all the different flow rates, but if anyone knows them from the exhaust manifolds, just make sure you keep a flow rate above that to prevent a bottleneck.

You may also want to look into a CarSound converter, they supposedly are pretty good with not throwing any codes.. I got one put on and I am getting a code but I think it's from a faulty sensor in the headers.. The CarSound converter is relatively cheap too.

[redbird00]

i like black cats...

but really, no cat, cutout...

merlin

[FireFighter]

carsound pn# 94009