ZZP Downpipe?
 

I know this has probably been asking 500 times but I am new. I looked all over for a post and did not see an exact answer. I was looking at the ZZP site at getting a downpipe and was wondering what drop down settings to pick when I go to order it. OR if there is a better option for doing the u-bend delete since I plan on getting a cat back system soon. (Would I be better off with the downpipe with the cat for a better high flow cat.) 02' Monte Carlo 3.8 with stock exhaust so far. THANKS!:)

Since your N/A, I'd get the 2.5 inch bolt in with cat. They come with magnaflow high flow cats so its a pretty good cat. I just installed the 3 inch with cat on our 04 SS Supercharged and its a really good pipe

if you are planning on a cat-back the zzp downpipe will be a better option. the downpipe area is the most restrictive part of the exhaust system. you should get better gas mileage which will let it pay for itself.

http://i33.photobucket.com/albums/d5...Picture1-3.png

you want that.

But be aware that many of us that have the ZZP downpipe with high flow cat that haven't gotten a tune or a PCM from ZZP yet do throw codes.

He has an '02, so there are many options for getting rid of the code if need be.

Ah yes the O2 emulator.

I actually just ordered a PCM from 3800perf I guess we will see how that goes I thought I saw on the 304 stainless option that there was a bung for the O2 sensor so would that still throw a code?

The code is because the O2 sensor on the car is reading after the cat. When you replace the stock cat for the high-flow the computer thinks something is wrong because the huge restriction is gone.

Even a new O2 sensor doesn't fool the computer.

Well THANKS everyone for the info I guess I will have to do some more looking before I order THANKS for the info!