Headers cause loss of low end?
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Headers cause loss of low end? I just got done installing FLowtech Longtubes the 3" ORY and TSP Rumbler cat-back with the muffler removed. My car is slower now when I just punch it from like 10 mph but after about 2500 rpm's it takes off like a ****. Is this normal for headers? Losing a little low RPM power but gaining way more upper RPM power? Also like when I punch it in 6th going down highway it is a little doggier there too.
I am not tuned either if that makes a diff, but is this common after longtubes installed?
I am not tuned either if that makes a diff, but is this common after longtubes installed?
Originally Posted by mnc2886
You do loose low end torque, but gain upper end.
Therefore stock manifolds increase low end torque
Last edited by Keenov; Sep 12, 2004 at 08:27 AM.
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Well I wonder if the major change in backpressure mabey. It just seems to not throw you back in the seat at lower rpm's right as quick but does after about 2500 and revs way quicker.
Headers, no cats, no muffler. Not terribly loud actually, Going down the highway I BARELY hear it and it isn't any louder than before I had headers until about 2K.
Headers, no cats, no muffler. Not terribly loud actually, Going down the highway I BARELY hear it and it isn't any louder than before I had headers until about 2K.
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it just feels like you lost down low. give it a week or two and you'll get used to the power and wont feel like the bottom end is soggier. i used to have a before/after dyno of a hooker LT install but i dont know what i did with it 
. i saved it specifically to point out that at no point in the powerband are you loosing power over stock.
. i saved it specifically to point out that at no point in the powerband are you loosing power over stock. Thread Starter
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I think what JRP makes the most sense. Cause I guess it doesn't feel much more sluggish just that as the RPM's go up it takes off so much more then that it makes the lower seem slower.
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Don't worry about it man, I just recently experienced the same thing after I installed some Kooks LT's w/ cats on my LS1 in addition to the lid and cat-back I already had. When you punch it down low or at low speeds, it doesn't feel as "torquey," but once it reaches the mid rpms, it just pulls so hard all the way to redline...
Mike
Mike
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Originally Posted by 2000LS1Z28
Don't worry about it man, I just recently experienced the same thing after I installed some Kooks LT's w/ cats on my LS1 in addition to the lid and cat-back I already had. When you punch it down low or at low speeds, it doesn't feel as "torquey," but once it reaches the mid rpms, it just pulls so hard all the way to redline...
Mike
Mike
Good, that is exactly what I wanted to hear. I am not the only one who notices and thats what I feel exactly.
every day for a week my car felt stronger after installing macs and cutouts(with no tune,obviously)........and it gets quiter too.....oh, wait, i think maybe i'm just going deaf...
Originally Posted by jdustu
every day for a week my car felt stronger after installing macs and cutouts(with no tune,obviously)........and it gets quiter too.....oh, wait, i think maybe i'm just going deaf...
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It,a known fact headers scavenge thats why we use them,the more back pressure you lose the more low down torque you lose.
None or open mufflers, long tube 4 into 1 work extremely well hence lack of low torque.
None or open mufflers, long tube 4 into 1 work extremely well hence lack of low torque.
