Enough!!! with the HVMC!!!
01-28-2007, 04:24 PM
#1
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Enough!!! with the HVMC!!! Let me start off by saying that in no way am I bashing QTP, they are a great product (one of the best) but this is getting ridiculous, some people claim you will get 5-10 RWHP over KOOKS and that’s just not true, all headers flow around the same and make around the same gains (give or take a few hp) Its true that the QTP HVMC will probably outflow KOOKS ventury collectors, but not enough too make 5-10 RWHP more than KOOKS. This is possible on an engine making huge power numbers, but I highly doubt 10 RWHP over KOOKS even if you’re pumping out big hp. There are many variables that come into play such as mods, tune, ext… (no engine is the same). I would personally choose headers on fitment and quality!!! And the reputation and service behind the product!!!!
Last edited by fastss; 01-28-2007 at 07:04 PM.
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01-28-2007, 05:41 PM
#8
Has anyone here tried Ebay headers? I found a GREAT price on them, and they should work better than QTPs and Kooks headers since they cost less. Any thoughts? I'm also torn on what heads/cam to get...I was thinking of doing either the Patriots or maybe some All Pros...as for a cam, I was thinking about doing either the 02+ LS6 cam or maybe the TRex. Any suggestions? I tried the search function, but it came up with too many results...
01-28-2007, 06:15 PM
#10
Tech Resident
Originally Posted by fastss
Let me start off by saying that in no way am I bashing QTP, they are a great product (one of the best) but this is getting ridiculous, some people claim you will get 5-10 RWHP over KOOKS and that’s just not true, all headers flow around the same and make around the same gains (give or take a few hp) Its true that the QTP HVMC will probably outflow KOOKS ventury collectors, but not enough too make 5-10 RWHP more than KOOKS. This is possible on an engine making huge power numbers, but I highly doubt 10 RWHP over KOOKS even if you’re pumping out big hp. There are many variables that come into play such *** mods, tune, ext… (no engine is the same). I would personally choose headers on fitment and quality!!! And the reputation and service behind the product!!!!
shorties flow just as well as longtubes. so since shorties flow just as well, why do longtubes make 20 horsepower over shorties?
the answer is longtubes scavenge a lot better. the extra flow of headers vs stock manifolds is only worth ~5 horsepower on a stock car. the proof is that's all you gain when you go to shorties. the "long tubes" that make up the longtubes increase the exhaust scavenging which in turn increases exhaust velocity which in turn increases horsepower. the reason why QTP's HVMC's make horsepower over kooks is because they increase the exhaust scavenging.
yes, all longtubes dyno relatively the same - on stock cars. on highly modded cars, it's a totally different story. why do you think they make 1 7/8 headers? because with all that extra power, you're gonna need the bigger headers. on a very aggressive H/C car, stroker motor or a supercharged setup on a high psi can easily make 5-10 rwhp over kooks by taking advantage of QTP's HVMC's. it's no bullshit. people have it beaten into their head that flow = power. that couldn't be further than the truth. flow is simply a component of a good exhaust setup, and while kooks and QTP's flow about the same, the QTP's better scavenging make them a superior header for power gains.
my $0.02. take it for what it's worth.
01-28-2007, 07:10 PM
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LOL!!! 
OK let me clear some stuff up
1. I meant to say (such as mods)
2. I know that shorties flow the same than long tubes, its the aded length that makes the power due to scavenging
3. just because im in California doesnt mean ****!!! i have Kooks with Y on the way
4. the reason for my post was for the claims that people are claiming due to there QTP HVMC over KOOKS
5. im not trying to start an argument, im speaking my mind
6. Chocotaco I agree with what you said as is stated on my post, that if you have a big HP car QTP HVMC would give you those kinds of gains, THANKS for the info!!!
OK let me clear some stuff up1. I meant to say (such as mods)
2. I know that shorties flow the same than long tubes, its the aded length that makes the power due to scavenging
3. just because im in California doesnt mean ****!!! i have Kooks with Y on the way
4. the reason for my post was for the claims that people are claiming due to there QTP HVMC over KOOKS
5. im not trying to start an argument, im speaking my mind
6. Chocotaco I agree with what you said as is stated on my post, that if you have a big HP car QTP HVMC would give you those kinds of gains, THANKS for the info!!!
Last edited by fastss; 01-28-2007 at 07:18 PM.
01-28-2007, 07:29 PM
#14
Originally Posted by ChocoTaco369
you're missing something, though. it's not all about flow.
shorties flow just as well as longtubes. so since shorties flow just as well, why do longtubes make 20 horsepower over shorties?
the answer is longtubes scavenge a lot better. the extra flow of headers vs stock manifolds is only worth ~5 horsepower on a stock car. the proof is that's all you gain when you go to shorties. the "long tubes" that make up the longtubes increase the exhaust scavenging which in turn increases exhaust velocity which in turn increases horsepower. the reason why QTP's HVMC's make horsepower over kooks is because they increase the exhaust scavenging.
yes, all longtubes dyno relatively the same - on stock cars. on highly modded cars, it's a totally different story. why do you think they make 1 7/8 headers? because with all that extra power, you're gonna need the bigger headers. on a very aggressive H/C car, stroker motor or a supercharged setup on a high psi can easily make 5-10 rwhp over kooks by taking advantage of QTP's HVMC's. it's no bullshit. people have it beaten into their head that flow = power. that couldn't be further than the truth. flow is simply a component of a good exhaust setup, and while kooks and QTP's flow about the same, the QTP's better scavenging make them a superior header for power gains.
my $0.02. take it for what it's worth.
shorties flow just as well as longtubes. so since shorties flow just as well, why do longtubes make 20 horsepower over shorties?
the answer is longtubes scavenge a lot better. the extra flow of headers vs stock manifolds is only worth ~5 horsepower on a stock car. the proof is that's all you gain when you go to shorties. the "long tubes" that make up the longtubes increase the exhaust scavenging which in turn increases exhaust velocity which in turn increases horsepower. the reason why QTP's HVMC's make horsepower over kooks is because they increase the exhaust scavenging.
yes, all longtubes dyno relatively the same - on stock cars. on highly modded cars, it's a totally different story. why do you think they make 1 7/8 headers? because with all that extra power, you're gonna need the bigger headers. on a very aggressive H/C car, stroker motor or a supercharged setup on a high psi can easily make 5-10 rwhp over kooks by taking advantage of QTP's HVMC's. it's no bullshit. people have it beaten into their head that flow = power. that couldn't be further than the truth. flow is simply a component of a good exhaust setup, and while kooks and QTP's flow about the same, the QTP's better scavenging make them a superior header for power gains.
my $0.02. take it for what it's worth.
Your on crack Anthony....He wasn't talking about shorties!
