Can you take the catalytic off your GMC sierra with no damage?

Cars & Vehicles
GMC Sierra

I wouldn't.

1. You will lose engine power. You need some back pressure for the engine to function properly.

2. You will never pass emissions.

Why would you want to do this? What year is it?

not true! you don't need back pressure for the engine to run properly, that's like the bigger the better bunch out there! but if you want to remove the cat from your gmc you can't do it with out cutting the cat out it is welded in place. the best thing

is keep the cats in place, if you need replacement do that! it's like this cats don't hurt the performance if you don't rev over 5800 rpm So if you don't plan to drag race or off road racing keep them on...not going to hurt a thing by doing so. if you have the old type of cats i would upgrade to a high flow type cats that is legal for state you live in, if you do the work yourself it will run about $250.00 but over time it will pay to so in mpg. and it will run cleaner. the e.p.a and all of us will thank you, so here is the answer cutting them out clean so that one can put it back in it's no damage.

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