I have one small question would gutting out the cat have any effect on the car, harm wize. I did it to mine my check engine light was on for a few days after that it just went away. And I left the O2 senor in place. Right now I'm running allmotor but I have my direct port getting ready to be hooked up in a few days. On motor the car feel semi slugish off the line but after 3k it pins u back more then it did with the cat not gutted. Could the slugishness be because I don't have much back pressure? Do u guys think I should go a race cat or would no cat run better when on spray.

One other thing I thought my car was loud with the Y-pipe and B-pipe and stock muffler, Now it sounds like beast....alittle to loud.

Rich

 

Get an RT cat, at least it is legal. Gutting the cat has shown no gains for antyone.

 

yeah

 

I gained 50..

 

But its only illegal if u get cought.

 

U gained 50 too. Before I gutted the cat I weighed in at 200 now after the fact I'm tipping the scales at 250. What ever they put in the center of that cat is hummy

 

Wrong kiddo, its wrong anway you look at it, its people like you we now have to take like 2 hours out of our lifes a year just to make sure we didnt "gut out our cat" its just isnt cool...

 

I agree with Tai Mai Shu, gutting your cat turns your car into a real pollution producer.Remember what happened in Eastern Europe? One car there produced 15-20 X the amount of pollution compared to one here. Why would any one want to harm the enviroment by modifying their car to try to increase performance when in reality no gains are acheived? This has been dyno proven. BTW the fine is $10K if you get caught. That's the reason most muffler shops avoid changing a functioning cat with under 50 K on it.

Dan

 

i bet you could take off your whole exhaust and get huge performance gains!!!

 

DON'T GUT THE CAT !!!

It is irresponsible and selfish. The emissions will go up drastically, and this world has enough problems as it is.

If the cat really IS causing that great a loss of power, then chances are you have already spent thousands on the engine, mods and other things to make it breathe so well, and you could afford a little more for an aftermarket cat with higher flow.

 

i bet i could gut my cat and get a good gain in power plus i could shoot flames! hehe
anyways, you could use a gutted cat at the track. ive never been much of a enviornment lover but please use a cat or at least high flo for the street. a Cat reduces something in the high 90's percents of pollution...cant remember how much.

 

rt cat all the way!

 

yes

 

ditto to the last couple of posts but seriously why even bother, gutting the cat gives no gains (at least i havent heard of anyone who said they gained any hp), so in the future if for some reason say ur selling the car or something, u gotta spend extra loot on just the cat. so why do it?

 

I gutted mt R/T Cat a few weeks ago. It is illegal to gut it in any state. It yields NO gains what so ever N/A. If you have a Y-pipe & hollowed out cat w/ a stock catback, it sounds like crap/ The only reason i did this was b/c i am running NOS. NOS creates backpressure and my exhaust is very restrictive as is. SO you know...

 

Just get a testpipe made and bolt that on instead. NO reason to kill a perfectly working cat.

 

Plant some trees while your at it too ......