2.0L LNF Performance Tech 260hp and 260 lb-ft of torque Turbocharged tuner version.

All You Need to Know About Downpipes

Old 05-30-2010, 07:30 PM
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Originally Posted by TurboTechRacing View Post
Personally I like to stick to one brand for the complete exhaust system. Mixing and matching may cause issues.
I agree. I mean I went with the ZZP downpipe and I'm 100% satisfied with it. Great piece!
I just didn't get Hahn's because of the price pretty much. I'm also stock exhaust otherwise.

So I saw if you have Hahn stuff already I'd just stick with that.
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Old 05-31-2010, 01:06 AM
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so i just got a cobalt addiction header and am going to get a downpipe to pair it with what would you suggest to go properly with the cobalt addiction shorty header
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Old 05-31-2010, 01:48 AM
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Originally Posted by kissrocker52 View Post
so i just got a cobalt addiction header and am going to get a downpipe to pair it with what would you suggest to go properly with the cobalt addiction shorty header
you've just posted in the LNF forum, in an LNF headpipe specific thread, asking (LNF owners) for a reccomended replacement headpipe to go with your LE5 shorty header?



(replied to this in another thread)
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Old 05-31-2010, 10:18 AM
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yea thats true i just dnt wanna drop the money for the hahn dp lol god all there **** is killin my bank acc lol deff good stuff tho im happy with everything iv got
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Old 05-31-2010, 12:53 PM
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Originally Posted by mccullj View Post
just have a quick question about downpipes.

i have always been told that not having a cat in your exhaust will eventually premature failure in the exhuast valves. i have been told this by some very credible people and it really makes me wanted to get a DP with a cat. however i really like the sound of the catless. any answers?
The exhaust system is after the valves so I don't see how it's possible for this to happen.

Originally Posted by myrt View Post
yea thats true i just dnt wanna drop the money for the hahn dp lol god all there **** is killin my bank acc lol deff good stuff tho im happy with everything iv got
Hahn needs to learn that charging people over $400 for a peice of 3" pipe with two flanges on it is wrong.
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Old 06-09-2010, 08:09 AM
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Tell me I'm not the only one, but I just installed my ZZP Catless and we had to pull my exhaust in about 3/4 inch even though it looked longer than the stock one. So now you can barely see my exhaust tip! Kinda upset about that.
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Old 06-09-2010, 09:27 AM
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Originally Posted by rdskin21 View Post
Tell me I'm not the only one, but I just installed my ZZP Catless and we had to pull my exhaust in about 3/4 inch even though it looked longer than the stock one. So now you can barely see my exhaust tip! Kinda upset about that.
my hahn w/ cat kept it at the same.
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Old 06-09-2010, 10:49 AM
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Originally Posted by rdskin21 View Post
Tell me I'm not the only one, but I just installed my ZZP Catless and we had to pull my exhaust in about 3/4 inch even though it looked longer than the stock one. So now you can barely see my exhaust tip! Kinda upset about that.
MPx w/out cat kept it the same as well
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Old 06-09-2010, 08:26 PM
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well looks like I just got a crappy one then, awesome. I wonder if there's a spacer or something I could put in there? for some reason this is really annoying me...
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Old 06-10-2010, 12:09 PM
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Wow ZZP is having the same problem as OTTP it seems. I'm going to be taking my DP off taking it to an exhaust shop and having them add 1/2" to it, we shall see how that goes.
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Old 06-10-2010, 12:21 PM
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I know catless is a hit or miss with the CEL without a tune but how many people have personnally thrown a code with it?
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Old 06-10-2010, 01:43 PM
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Originally Posted by Whtbolttc09 View Post
I know catless is a hit or miss with the CEL without a tune but how many people have personnally thrown a code with it?
The problem with this question, is that "most" people with a catless dp will have an aftermarket tune and say they havent thrown the cel for X miles. Well of course they haven't. After market tunes take away that issue.
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Old 06-10-2010, 01:54 PM
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Originally Posted by northvibe View Post
The problem with this question, is that "most" people with a catless dp will have an aftermarket tune and say they havent thrown the cel for X miles. Well of course they haven't. After market tunes take away that issue.
Yea I know aftermarket tunes takes it away I'm saying without the tune how many people have thrown a code? I have a catless dp ready to put on but I am not getting a tune for the next couple months
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Old 06-18-2010, 02:38 PM
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i have GMS1.. no tune ZZP catless and 0 codes from 1500km
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Old 06-21-2010, 02:50 PM
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Originally Posted by Whtbolttc09 View Post
Yea I know aftermarket tunes takes it away I'm saying without the tune how many people have thrown a code? I have a catless dp ready to put on but I am not getting a tune for the next couple months
It's hard to say everyone is different. You will get a CEL the question is when 100 miles or 25,000 miles.
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Old 08-01-2010, 05:56 PM
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Just took a vid of my car for this thread-

zzp catless dp with stock exhaust system including stock muffler.

http://www.youtube.com/watch?v=jGfskjEeOLM
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Old 08-02-2010, 03:29 PM
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Wow wish I would hav read this prior to putting mine. What a bummer.
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Old 08-04-2010, 09:53 AM
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I just installed a modern performance catted dp, sounds good and feels like there is a little more power on the lower end. I say dp is a must have if you own a SS.
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Old 08-04-2010, 10:23 AM
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Originally Posted by Medicsstc View Post
Wow wish I would hav read this prior to putting mine. What a bummer.
what did you get?
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Old 08-08-2010, 01:46 PM
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Originally Posted by RiceCop View Post
Just took a vid of my car for this thread-

zzp catless dp with stock exhaust system including stock muffler.

http://www.youtube.com/watch?v=jGfskjEeOLM
Thanks for the vid!
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Old 09-07-2010, 04:47 PM
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Which of the listed has best performance?
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Old 09-07-2010, 05:07 PM
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Originally Posted by scarface7272 View Post
Which of the listed has best performance?
they all will give you the same pretty much. All are 3". You just need to find which one you like. all catless will act the same besides their bungs. So if you tune it it really doesnt matter what bung as the tune can turn off the o2 error. If you run stock tune or gmstage 1 id say get a catted dp with a bung (angled) so you have less of a chance to throw a cel.
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Old 09-21-2010, 12:17 PM
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So im thinking about getting the ZZP catted DP. But whats this about it possible not fitting correctly and making the exhaust tip not show. Anyone have any experience with this?
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Old 09-21-2010, 12:29 PM
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Originally Posted by Whtbolttc09 View Post
Yea I know aftermarket tunes takes it away I'm saying without the tune how many people have thrown a code? I have a catless dp ready to put on but I am not getting a tune for the next couple months
Both catless ss/tc's in MN i know with gmstage 1 and stock threw a CEL. Its random.

Originally Posted by 09SlobaltSS View Post
So im thinking about getting the ZZP catted DP. But whats this about it possible not fitting correctly and making the exhaust tip not show. Anyone have any experience with this?
they fit, but some seem to be shorter than stock so the tip doesnt poke out. Also could be adjustments with the hangers. My hahn has no issue, cant speak for the other brands.

Last edited by northvibe; 09-21-2010 at 12:29 PM. Reason: Automerged Doublepost
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Old 09-21-2010, 12:36 PM
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Originally Posted by 09SlobaltSS View Post
So im thinking about getting the ZZP catted DP. But whats this about it possible not fitting correctly and making the exhaust tip not show. Anyone have any experience with this?
Seems as though quite a few people have had fitment issues with the OTTP one and I have heard of a couple fitment issues with the ZZP one aswell.
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