gutting out cat
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gutting out cat My car just got smogged so now that I am emission care free for a year I want to start by gutting my cat. Has anyone done this already and is it a good idea. How much performance/noise gain should be expected and how hard of a task is it to do?
Originally Posted by Lt1FBoDy209
My car just got smogged so now that I am emission care free for a year I want to start by gutting my cat. Has anyone done this already and is it a good idea. How much performance/noise gain should be expected and how hard of a task is it to do?
Good luck, Ed
as for difficulty, it took quite a while for me cuz i didnt have very good tools, but for my friend, we used a crowbar, then just started the car and blew the junk out. do that a couple of times, you'll notice the car getting louder and louder every time, use a flashlight and then you can see how much you have left to do. with the right tools, should only take 1 - 2 hours max.
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yeah if you dont have back pressure your car loses some power
thats why taking off the muffler is not a good idea
i don't want lose power or anything but I want my car to be louder
and it not to be too obviously illegal.
also wouldnt having the exhaust blow out the junk in the cat do bad things to the exhuast system?
thats why taking off the muffler is not a good idea
i don't want lose power or anything but I want my car to be louder
and it not to be too obviously illegal.also wouldnt having the exhaust blow out the junk in the cat do bad things to the exhuast system?
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I think it really depends on how many mods you have on the engine. If you need the extra breathing then i could see where it would help (heads + cam). I dont think the improvement is going to be more than 10hp at WOT.
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From: Las Vegas.. back in san jose..
with my car i have a 93 z28 and i took off the cat completely and put a 3 inch pipe..with a cutout..and i love it i feel more power and i love the sound and the startes that i get 
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93 z28, cut out, no cat, 3.23, moroso cold air intake,free mods.....
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93 z28, cut out, no cat, 3.23, moroso cold air intake,free mods.....
