Hey guys, have a question that i'd like some help with...

I have a full 3" exhaust from my turbo how ever i need to take in my car for our area's version of emission. I took it in to fail on purpose as that enables me to be able to insure it for 3 months, when i took the test i passed everything except for the visual (no cat of course)

Now my question is, is it better to locate a stock t2 exhaust and put that on or as some friends suggested to get a 3" cat which i have found locally and have that welded on, then removed after the emissions test?

My second question is , if i choose to do the second option will having to put that cat on and then removing and replacing it with the pipe again affect the perfomance of my exhaust? I know this is probably a dumb question but I just wouldnt want to harm any aspect of my exhaust as i love the performance and sound of it

any help would be much appreciated, I tried to search but didnt really come up with anything... Thanks again!

 

Just weld a high flow cat in a you'll be set, get a good one like a random technology or something that won't melt but they aren't really any more constrictive than a 3" pipe. You might as well leave it in after the emissions test, most tracks by me require a cat and you won't suffer any major power loss. I'm gonna get a high flow cat for the same reason.

 

Thanks for the speedy reply, I would miss the flame throwing with a cat though any idea how much more or less a high flow cat would set me back?

 

I don't know how much more restrictive it really is if any than the rest of the 3" system, check out:

Random Technology

This design, which meets Federal EPA and California ARB requirements, enables virtually any vehicle with a properly tuned engine to meet emissions standards with little, if any power loss (compared to an exhaust with no catalytic converter).

In fact, Random Technology high efficiency catalytic converters actually have a higher flow capacity than many mufflers. As an example, a 3" diameter 9000 series SuperStainless catalytic converter flows 502 cfm. Most 3" diameter high performance mufflers flow less than 475 cfm at the same test pressure. Random Technology direct fit SuperStainless catalytic converters are available for most domestic and imported vehicles. Custom catalytic converters with inlets and outlets up to 4" in diameter are available.

 

You could just put on an empty cat.

Or weld one around your 3inch pipe to make it look like a cat is in use.
Esp if you pass smog with no cat