Does H-Pipe cause reduction in torque on stock engine?
11-11-2006, 10:02 PM
#11
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Join Date: Feb 2006
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RE: Does H-Pipe cause reduction in torque on stock engine?
ORIGINAL: HACKGT350
you dont want one or the other you want both at the same time. with just the exhaust you are blowing out more are then you can take in which looses power. with just the cai you are sucking in too much air and not able to push it out fast enough which will also loose power. now with both you are sucking in all that air but you are able to push it out fast enough with the exhaust. this gives you the perfect air flow and back pressure for best performance out of a stock motor with no bolt ons
you dont want one or the other you want both at the same time. with just the exhaust you are blowing out more are then you can take in which looses power. with just the cai you are sucking in too much air and not able to push it out fast enough which will also loose power. now with both you are sucking in all that air but you are able to push it out fast enough with the exhaust. this gives you the perfect air flow and back pressure for best performance out of a stock motor with no bolt ons
JMO
11-11-2006, 10:06 PM
#12
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RE: Does H-Pipe cause reduction in torque on stock engine?
The loss in power you have felt is due to the flowmasters. They have been dyno proven to add little to no power, and in some cases, actually COST power.
11-11-2006, 10:08 PM
#13
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RE: Does H-Pipe cause reduction in torque on stock engine?
ORIGINAL: 5.0stanger
I don't know if I agree with having the one or the other losing power. I can understand both being inplace is optimal, but that is like saying putting headers on is stupid without a better flowing intake(I know it helps to have both, but it wont hurt you to have one or the other)
JMO
ORIGINAL: HACKGT350
you dont want one or the other you want both at the same time. with just the exhaust you are blowing out more are then you can take in which looses power. with just the cai you are sucking in too much air and not able to push it out fast enough which will also loose power. now with both you are sucking in all that air but you are able to push it out fast enough with the exhaust. this gives you the perfect air flow and back pressure for best performance out of a stock motor with no bolt ons
you dont want one or the other you want both at the same time. with just the exhaust you are blowing out more are then you can take in which looses power. with just the cai you are sucking in too much air and not able to push it out fast enough which will also loose power. now with both you are sucking in all that air but you are able to push it out fast enough with the exhaust. this gives you the perfect air flow and back pressure for best performance out of a stock motor with no bolt ons
JMO
11-11-2006, 10:47 PM
#14
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RE: Does H-Pipe cause reduction in torque on stock engine?
But isn't the point of putting on a better flowing, bigger exhaust to move the powerband upward and strengthen it...at the expense of low end? That has always been my experience with exhaust and intake mods.
11-11-2006, 10:56 PM
#15
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RE: Does H-Pipe cause reduction in torque on stock engine?
Yeah...you dont really lose torque in a sense. Ultimately you gain torque, but just at a higher rpm.
And its not backpressure that causes the gain or lose in torque. You want absolutely no backpressure to get the most out of your engine. It is the exhaust velocity that comes in to play when people say things like, "The bigger exhaust, the less power." The article was posted about that on here not too long ago.
And its not backpressure that causes the gain or lose in torque. You want absolutely no backpressure to get the most out of your engine. It is the exhaust velocity that comes in to play when people say things like, "The bigger exhaust, the less power." The article was posted about that on here not too long ago.
11-12-2006, 06:02 AM
#16
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RE: Does H-Pipe cause reduction in torque on stock engine?
original:84redfox
Yeah...you dont really lose torque in a sense. Ultimately you gain torque, but just at a higher rpm.
And its not backpressure that causes the gain or lose in torque. You want absolutely no backpressure to get the most out of your engine. It is the exhaust velocity that comes in to play when people say things like, "The bigger exhaust, the less power." The article was posted about that on here not too long ago.
Yeah...you dont really lose torque in a sense. Ultimately you gain torque, but just at a higher rpm.
And its not backpressure that causes the gain or lose in torque. You want absolutely no backpressure to get the most out of your engine. It is the exhaust velocity that comes in to play when people say things like, "The bigger exhaust, the less power." The article was posted about that on here not too long ago.
11-12-2006, 12:31 PM
#17
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RE: Does H-Pipe cause reduction in torque on stock engine?
ORIGINAL: 89GTRed
I certainly dont agree with that. That is why you are NOT supposed to have 3" exhaust when you have a stock or lightly modified engine. It all has to fit together correctly. Having absolutely no backpressure is gonna cause problems.
original:84redfox
Yeah...you dont really lose torque in a sense. Ultimately you gain torque, but just at a higher rpm.
And its not backpressure that causes the gain or lose in torque. You want absolutely no backpressure to get the most out of your engine. It is the exhaust velocity that comes in to play when people say things like, "The bigger exhaust, the less power." The article was posted about that on here not too long ago.
Yeah...you dont really lose torque in a sense. Ultimately you gain torque, but just at a higher rpm.
And its not backpressure that causes the gain or lose in torque. You want absolutely no backpressure to get the most out of your engine. It is the exhaust velocity that comes in to play when people say things like, "The bigger exhaust, the less power." The article was posted about that on here not too long ago.
I don't think you got what he meant. He was saying that you want little to no back pressure, but keeping your velocity. Without velocity, you would lose power. If you put huge exhaust on, yes, you can lose power, same with porting your heads too big for your valves or intake...but the idea is to have less restriction.
11-12-2006, 03:32 PM
#19
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RE: Does H-Pipe cause reduction in torque on stock engine?
ORIGINAL: 89GTRed
I certainly dont agree with that. That is why you are NOT supposed to have 3" exhaust when you have a stock or lightly modified engine. It all has to fit together correctly. Having absolutely no backpressure is gonna cause problems.
original:84redfox
Yeah...you dont really lose torque in a sense. Ultimately you gain torque, but just at a higher rpm.
And its not backpressure that causes the gain or lose in torque. You want absolutely no backpressure to get the most out of your engine. It is the exhaust velocity that comes in to play when people say things like, "The bigger exhaust, the less power." The article was posted about that on here not too long ago.
Yeah...you dont really lose torque in a sense. Ultimately you gain torque, but just at a higher rpm.
And its not backpressure that causes the gain or lose in torque. You want absolutely no backpressure to get the most out of your engine. It is the exhaust velocity that comes in to play when people say things like, "The bigger exhaust, the less power." The article was posted about that on here not too long ago.
11-12-2006, 03:43 PM
#20
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RE: Does H-Pipe cause reduction in torque on stock engine?
The answer here is, it depends. If you want maximum power, you'll test all 3 with your completed combination and see what the engine wants or needs. X/H/or straight......back pressure is needed,but the location is more important.
velocity is what/how exhaust flow is drawn out
velocity is what/how exhaust flow is drawn out