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Old Oct 25, 2010 | 07:49 PM
  #1  
Manny Black's Avatar
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Default zzp downpipe

Ok the gmpp cat-back came in today, and in about two weeks my 04 ss s/c will arrive and now im ordering the zzp downpipe...does this look right?

model
2.5inch bolt in with cat

option2
none

option3
none

option4
keeping stock cat

option5
standard model
 
Old Oct 25, 2010 | 08:12 PM
  #2  
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It may just be me, but I don't really understand the question.
 
Old Oct 25, 2010 | 08:55 PM
  #3  
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when you order the downpipe it asks for these options. just wanted to know if i picked the right ones...
 
Old Oct 25, 2010 | 09:57 PM
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I'll bump for ya, because i dont know whats up with all of the options. :-???
 
Old Oct 25, 2010 | 10:06 PM
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It depends. Do you want to do just a mild build or are you planning on doing something extreme? If extreme, don't buy the downpipe until you know what headers you're going with. If mild, then you will be fine, but you could bump up to a 3" dp.

What do you want to do with the Monte performance wise? What kind of whp and 1/4 miles times would you like?
 
Old Oct 26, 2010 | 12:32 AM
  #6  
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Originally Posted by Jomao_o
I'll bump for ya, because i dont know whats up with all of the options. :-???
go here. you'll see what i mean...just didnt know what to select.
http://www.zzperformance.com/grand_p...=551&catid=110





Originally Posted by zipper
It depends. Do you want to do just a mild build or are you planning on doing something extreme? If extreme, don't buy the downpipe until you know what headers you're going with. If mild, then you will be fine, but you could bump up to a 3" dp.

What do you want to do with the Monte performance wise? What kind of whp and 1/4 miles times would you like?
Just a mild build. this dp, the cat back i just got, and a k&n cai is all im gonna put in it...maybe the zzp 1.0 pcm since the dp throws that code sometimes. does it matter that the dp is 3" and the cat-backs's pipe's are 2.5"?
 
Old Oct 26, 2010 | 07:11 AM
  #7  
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I bought a 2.5" ZZP down pipe with high flow cat. And I could not help myself, I had to cut my old down pipe and see first hand what ZZP was talking about, sure enough, it was about 2" inside diameter (you can tell on the ZZP one right away, it's wider).

Out of curiousity, any reason on option 4 you are choosing to keep the stock cat? I opted for the $50 credit (and they supplied the pre-paid shipping label at no cost). I used that credit towards getting a PLOG (took ZZP a few months to re-stock the PLOG)....
 
Old Oct 26, 2010 | 07:26 AM
  #8  
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The rear connection for the dp should still be 2.5" and bolt up perfectly fine
 
Old Nov 11, 2010 | 07:57 AM
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Default Which DP to buy...

If you are N/A then buy the 2.5" DP, if you are supercharged then buy the 3" DP.

Option 1:
For ease of installation, buy the 3" bolt-in with cat.
For long lasting durability, buy the 3" 304SS bolt-in w/cat

Option 2:
Don't know if the O2 extension harness is necessary for the MC's.

Option 3:
For ease of installation, buy both front and rear gaskets

Option 4:
It is always good to keep your stock DP in case you ever want to go back to stock.

Option 5:
Standard Model


Now all of that is fine and dandy, but before you got dropping money on this, like mentioned above, ask yourself where do you want to take this car mod wise? If you want to drop pulley sizes and build it, skip right over the DP and go with headers. Best bang for the buck and you will only have to do the exhaust one time.
 
Old Nov 11, 2010 | 06:23 PM
  #10  
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Originally Posted by Condore21
If you are N/A then buy the 2.5" DP, if you are supercharged then buy the 3" DP.

Option 1:
For ease of installation, buy the 3" bolt-in with cat.
For long lasting durability, buy the 3" 304SS bolt-in w/cat

Option 2:
Don't know if the O2 extension harness is necessary for the MC's.

Option 3:
For ease of installation, buy both front and rear gaskets

Option 4:
It is always good to keep your stock DP in case you ever want to go back to stock.

Option 5:
Standard Model


Now all of that is fine and dandy, but before you got dropping money on this, like mentioned above, ask yourself where do you want to take this car mod wise? If you want to drop pulley sizes and build it, skip right over the DP and go with headers. Best bang for the buck and you will only have to do the exhaust one time.

Very helpful info, thanks.
 



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