Bumpin Balt

I'm looking for some feedback on the ZZP 3" Downpipe. The few opinions I've heard so far have been mixed. Some say it makes a loud whistling noise, others say they are really happy with it. Any info would be appreciated.

Infernokron

I had the 3" ZZP DP (cat-less) on my car. I liked it so much I gave that to my bro and got the mid-lenght header/DP (still 3 " cat-less) for my car, along with the ZZP 3" cat-back. You can hear air rushing through the DP when you hit the gas pedal, sounds kinda like whistling but it's not too loud. All in all I love the ZZP DP.

07 SS/SC

I love mine. No complaints.

MfZx25z

I have 3" dp and I love it also. Amazing sound, I def recommend the 3 inch

Bumpin Balt

Thanks guys. Anyone else?

SSCobalt~SSZ24

im thinkin about zzp header and downpipe combo....i want a high flow cat no catless for me....you guys recommend the 3" huh?

Bumpin Balt

I already have the ZZP header and GMPP exhaust waiting to be installed. I'm just trying to decide what DP to get. Rebel Autoworx makes an awesome 2.5" DP, but they want $360+tax (13% in Ontario!). That's a bit much for a frickin' DP!

Bumpin Balt

Bump for more feedback

Immortal Technique

I have that DP catless with the Megan racing exhaust, and it's super loud and I can definately feel some gain.

ssweeet

iTrader: (2)

I was thinking of a ZZP header and downpipe combo as well. I heard that there were a lot of complaints about the flexpipe breaking and whistling sounds...

Bumpin Balt

This is why I'm still sitting on the fence. For every good review, i hear one like this!
Thanks guys.

ColeJJones

zzp for the win. i run their 3" and its perfect. i see people get 2.5 all the time and its pretty gay once you start making power and they are like, "oh, ****! i have to get a bigger dp to push more air." just get the 3" with 2.5 exit until your ready to go full 3" all the way out. take it the muffler shop and fork over that 50 bucks to make it happen.

ssweeet

iTrader: (2)

I was thinking of going 3" with the 2.5" exit due to my Megan being 2.5"

But, as bumpinbalt said, for every good review about ZZP, I hear something going wrong with someone's setup.

ColeJJones

never had one problem with them...

krazycobalt

IM also on the line, I was going to run the 1 3/4 header with the 3" DP and a 2.5 bolt in exit. Im just worried about codes and it ishould just replace verything with 3 instead of 2.5 although i heard 2.5 is fine with the 3" dp

Bill@usd

I have one, with cat and i love it

sound great

3ds138

i only have one issue with my down pipe, it rubs on the heat sheild.. makes a rattle, but that will soon be fixed once i get my 2.5 exhaust, so i can re-adjust it

dannysauer

iTrader: (3)

i got the 3 inch zzp dp and it is great have not had any problems with it and it is connected to the 3 inch vibrant exhaust

mikess06

anyone have the megan cat back and then add this combo what was the differents? alot louder? cause megan is pretty loud not.. thanks

tkaugh29

your supposed to remove the headsheld when you install the header........

Jimmys2007CobaltSS/C

iTrader: (1)

wait zzp has a catback?

SSMOKEM

Downpipe is good, but my flex pipe broke off less than a month of being installed. header is also good, just that damn flex pipe. Also the whistling goes away after awhile.

ssweeet

iTrader: (2)

Does anyone know if ZZP includes the correct bolts now? I know for a while, purchasers had to get a new set of bolts considering the ones ZZP sent with header and downpipe combos broke.

ssmokin

i doubt it...i supposedly got the new ones and they broke...its really not a big deal as long as you get some new bolts before you install it..they're like 5 bucks....dont wait till they break like me...

ssweeet

iTrader: (2)

Do you know what size bolts are required?
Also, what is better? 3" with 2.5" exit for my 2.5" exhaust or 2.5" all the way? I was also wondering if the shorty or midlength header is better.
Another question. High flow cat or no cat? What are the major differences?