LSChris

Those of you with a ZZP downpipe and a stock catback,

How was the fitment? I.E. is the outlet of the downpipe a smooth transition into the catback? If the downpipe is 3" and the catback is 2.5" (correct?) I would expect to see a 1/4" overlap on either side, which doesn't work for me.

Before I received mine I questioned ZZP, and they would only assure me that it does indeed bolt up.

mofofernando

iTrader: (3)

i thought the lnf was a 3in 3bolt flange but not positive on that

Iam Broke

iTrader: (10)

IIRC, it's a smooth transition. I think the stock catback goes to 2.75" behind the resonator but I haven't been under there in a while. My ZZP DP fits fine.

08SStc

iTrader: (5)

the stock DP is 3". the stock catback starts out 3" into the resonator, but as soon as it gets out of the resonator it, it narrows down to 2.5"

09CobaltSS1

they both use a 3.5" 3 bolt flange and mate up perfectly. ZERO fitment issues

D-mac

iTrader: (5)

My ZZP DP bolted up without any issue

Great part

importkiller

iTrader: (1)

MY zzp downpipe hooked right up with stock cat back no issues!

Supercharged Guy

iTrader: (1)

No problems whatsoever, great part and great price

I have their catback so it bolted right up but on the stock catback you wont have any problems

Just listen to everybody else that has the stocker with their dp