I was wondering how people like the downpipe from ZZPeformance. Those of you who have it I need your input. Thanks in advance!!

 

****** love it you really cant go wrong with it

zzp is the place to go through

 

Is the 02 bung already on there?

 

It fit just perfectly on my car. No problems whatsoever. Check out my gallery. Ther are some pics of it on there.

 

same here, great for the price...perfect fit. love it.

 

Did you guys get it with the 02 bung? If so, did you have to weld it on there or was it already on there?

Are the gaskets that they supply good or do I need to get different ones?

 

already on it, pretty much same exact location as stock. i went with factory gm because they were half the price for me and did a gmpp cat-back at the same time

 

The required bungs are on there for stock-like connectivity but if you want one for a wideband, then they can add that for you for a small price.

If you contact them by email they will tell you how to go about doing that...

 

ZZP has one of the best downpipes at one of the best prices. You will be amazed at how nice the Dp is when you get it.

 

nice design, good workmanship, but man it sounds horrible for the first 1000 miles, i mean bad, like a bad exhaust leak that doesnt go away, you hate to get on the gas cause it sounds so bad, but after 1000 miles or so it breaks in and sounds better but you will still hear the hi flow cat through the firewall of the car everytime you hit the gas, gains were ok may 5-10 whp, mine is still breaking in so i will let you know in a few weeks, i have put about 1700miles on mine so far.

 

I see you have the same mods as me with the exception of the 2.9 pulley. Did you get the downpipe and exhaust after the intake and stage 2? If so, did you see or feel a big difference?

Is this normal for every downpipe? Is it suppose to sound like crap at first?

 

well i ran into boost issues so i couldn't say if there was a difference.

with my downpipe it didn't sound like crap at all, doesn't make any noise and is pretty quiet. simple exhuast leak after first installing, but retorqued the collector nuts.

thats one reason why i love it.. have about 1500 miles on it now

 

so my bad sound was the fact that the exhaust shop only installed 2 of the 3 bolts that connect to the manifold causing a major leak, i fixed the problem and the downpipe sounds awesome now

 

mine is good

 

you need the extra hole if you're going to be doing any tuning, or have extensive tuning done.

it makes life easier

 

bump

 

Awesome piece, loving the quality of this piece, here is some pictures of my 3" DP I bought from them:

 

Thanks to everyone for their help!! +1 Rep

 

Mine will be here today. I got it to bolt up to 2.5" so I can mate it to my gm exhaust. Hopefully I can get it on today. I hope it doesn't take a while to cool down.

 

thanks for the rep.

notice that mine has 2 bolt holes at the top.. for an aftermarket header.. i think the other one is for the stock manifold. they are not compatible.
just thought you should know

 

will the zzp downpipe w/ high flow cat ruin my turbo setup in the future. I mean do i need to take it off ...and would it be a waste of money????

 

I dunno but I have it on my car and every hundred miles or so it pops a p0420 (catalyst efficiency). I've called them a couple of times about it but they say there's no fix for it. maybe if i did the rest of my exhaust and installed the stage 2 it'd stop setting the CEL. other than that it's a great downpipe.

 

well if you just got a catless downpipe would that effect any worse or cause more CELs

 

that would cause more CELs....or just the same one. also your car would get louder and you'd gain maybe a net of 1hp..feel free to correct me if i'm wrong

 

jjust ordered the ZZP header and downpipe combo, bolting it up to my GM performance exhaust. can't wait to get it.