Thread: ZZP catted downpipe ??

I had a custom exhaust on my gxp and loved the sound but the drone was getting to me. I got a good deal on a full magnaflow catback exhaust. Honestly it's the best investment I could've done. I feel I got some power back and best of all my drone is gone. I'm thinking of adding a ZZP catted downpipe just for a little bit more flow since I've read the original is a bit restrictive. Any of you guys used this before and how do you think it would affect my exhaust sound and drone ? Thanks for any input.

You'll most likely throw an po420 code with the dp even if it is catted mine did

GXP headers cost alot for a non china made set.

And hs sig says he has a tune already, wouldnt take but 3 clicks of the mouse to shut off the rear o2 code in the PCM.

Originally Posted by Fivefingerdeathpunch

GXP headers cost alot for a non china made set.

And hs sig says he has a tune already, wouldnt take but 3 clicks of the mouse to shut off the rear o2 code in the PCM.

Tapatalk didn't let me read his sig

Originally Posted by theaceofspades

You'll most likely throw an po420 code with the dp even if it is catted mine did

Correct I have a tune so I would have that turned off. So how did you like yours ? What was the sound difference and any performance gains ?

I would do headers but it's my daily driver and I feel that it might also get to me after a while

Doubt you will have a code. The downpipe is a nice addition and helps to fight kr. Expect a slight off the line "tourqe" feel but you'll feel it above 2000 rpm.

I have a ZZP 3" catted downpipe and haven't thrown a code.

Even before my car was tuned.

I'll still be using the cat and the back half of the downpipe when I have my headers installed too. It'll be fine. Downpipe install was simple too.

Originally Posted by HighOctaneRacing

Here you go.

http://www.grandprixforums.net/threads/96561-For-Sale-3-inch-Downpipe-100

3800 downpipe is different than LS4.

OP has LS4.