GMPP Honed Exhaust manifold
#1
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GMPP Honed Exhaust manifold
Hey, just wondering if anyone has dynoed or seen the dyno results from the GMPP extrude honed exhaust manifold?Also does any one have any good comparisson pics of the stock manifold next to the GMPP extrude one?
#2
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They look exactly the same from the outside because they are exactly the same except that the internals are smooth. You will not get much of a performance gain from this.
#6
So then is it really worth the price? I mean, extrude honing the exhaust manif. has been around in racing for 20 years. But in order to get any gains from it, there can't be any bottle necks in the system. So it kinda defeats the whole point of it unless you change your exhaust AND downpipe?
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IMHO it's worth it... especially if you don't wanna worry about possible warranty issues or hassles with real headers. I got it just b/c it was simple... relatively cheap... and the dealer could install it when they did my exhaust.
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^^^ what he said. Althought I havent installed mine yet, but I had a stock one besides my GMPP manifold and it has bigger holes and its all smooth inside.
If you dont car for warranty and hassel, by all means go with the DC 4-1 header, but if you care about warranty and stuff like that, get the GMPP one. Either way, you win!
If you dont car for warranty and hassel, by all means go with the DC 4-1 header, but if you care about warranty and stuff like that, get the GMPP one. Either way, you win!
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in my honest opinion its NOT worth it **** if you have to argue with your dealer that your header didnt cause a problem you either need to work on word choice or get a new dealer , go buy a pacesetter if your looking for cheap
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^^^ exacly what I was saying!! He wants to put upa fight and tell the dealer to F'off and drive somewhere else. For me driving somewhere else IS a HUGE hassel. They "PROB" wont say anything BUT they might. And if they do it sucks. And I heard numerous times that it makes a difference on the power side!!
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But didnt someone allready tried that and it cost him more than just getting the GMPP one?? I saw that somewhere. And dont forget you need to be exact on this, otherwise one piston will have more flow that the others and that just creates a slight issue. Not as effective
I mean its not a whole lot of $$, F'it and buy one. I got mine for 240 canadian. I mean thats like 200 us!
I mean its not a whole lot of $$, F'it and buy one. I got mine for 240 canadian. I mean thats like 200 us!
Last edited by martinsmu; 01-21-2007 at 04:49 PM. Reason: Automerged Doublepost
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But didnt someone allready tried that and it cost him more than just getting the GMPP one?? I saw that somewhere. And dont forget you need to be exact on this, otherwise one piston will have more flow that the others and that just creates a slight issue. Not as effective
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no no, I understand that it will work perfectly fine, but it might not be as "effeciant" as it could/should you know. Thats all.... Do whatever u want bro, I bought one, and only heard preatty good things about them. Personnaly I dont have mine on yet, so I cant tell your for a fact, but there are a few post before giving it props so you can usually trust people that actually have it on their cars and their opinions, not people that heard of stuff and work on the basis of common sense.
#22
Problem is if you do tell the dealership to go **** off they simply go to the computer put your VIN # in turn you into GM and your warrenty gets pulled from GM. Its that simple.
Doubt me? My old dealership I worked for did it with several cars and we even had a couple Cobalt SS/SC that came in that had thier warrenties branded by other dealers so when they came to us we turned them down to.
Don't give advice as to what dealers can and can't do unless you actualy know for sure. I worked for Miller Brothers Chevrolet for almost 4 years and I've seen the **** they do. They will **** you at every turn to get from repairing ANYTHING for free. The easiest way to do it is to go ask BEFORE you mod it, ask the service manager and MAKE sure they won't brand your warrenty BEFORE you do the mod. If your not worried then knock yourself out. But if you are the GMPP stuff is the best way to go. Sure you may be able to get a few extra horses but its not worth it if you break something and they turn you away.
Doubt me? My old dealership I worked for did it with several cars and we even had a couple Cobalt SS/SC that came in that had thier warrenties branded by other dealers so when they came to us we turned them down to.
Don't give advice as to what dealers can and can't do unless you actualy know for sure. I worked for Miller Brothers Chevrolet for almost 4 years and I've seen the **** they do. They will **** you at every turn to get from repairing ANYTHING for free. The easiest way to do it is to go ask BEFORE you mod it, ask the service manager and MAKE sure they won't brand your warrenty BEFORE you do the mod. If your not worried then knock yourself out. But if you are the GMPP stuff is the best way to go. Sure you may be able to get a few extra horses but its not worth it if you break something and they turn you away.
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Exacly what I was saying... better said though! That is exacly why I went GMPP. I went and asked them and they said it like this, "you get GMPP no worries, you get aftermarket, well then it all depends who is working that day. Some dont give a ****, and some will turn you away" So what did I do, I bought GMPP. The extra few HP just aren't worth the (potential) hassell to me.