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My experience with open Long tube headers on an ls1

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Old 05-26-2011, 11:06 AM
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this is why i love ls1 tech !!!
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Old 05-30-2011, 12:11 PM
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Originally Posted by thunderstruck507
And anyone running nothing but pipe with no muffler or resonator has no tastes and must just like being loud for no reason.
I think my Duramax sounds pretty damn awesome
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Old 05-30-2011, 03:06 PM
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I've heard that wrapping headers will trap moisture in and eventually rust/erode.
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Old 05-30-2011, 03:12 PM
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After some quick research it seems that it's only a bad idea if you let the car sit for a while (not sure what a while is). If you drive often (like a DD) then the moisture that gets trapped will be burnt off.
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Old 05-30-2011, 06:48 PM
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You can't compare open headers/no open headers without doing a tune for each case. Your air/fuel ratio will change from one to the next at WOT and also at WOT your front O2 sensors don't do a thing. Your car is taken out of closed loop then.
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Old 05-30-2011, 07:54 PM
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Originally Posted by thunderstruck507
There is no "best" setup. You want something that will flow as well as your engine needs, the sound is up to preference.

Me personally, I think y pipes make ls1 cars sound like ******* boats.
I can honestly say my car does not sound anything like any boat I have ever heard
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Old 07-05-2014, 08:09 PM
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i decided to unbolt my ypipe from my cats and drive around...its a little raspy but i like it lmao also cat ineffiecency light popped on bahh who cares
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Old 12-04-2015, 12:34 AM
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Loving the site, looking for info on my first LS1 project coming soon. I'm Jason Pope & own XPW that manufactures header wrap & turbo blankets. Wrapping your pipes does for sure create a lot more horsepower & some extra back pressure, mainly your burning off those extra fumes in the exhaust. You will get more out of wrapping your pipes, than you will ceramic coated headers (Dyno shows that,not just because I'm in that business) and much cheaper. The curves in your headers are different to create more or less back pressure for certain engines or uses. We always wanted more back pressure on shorter dirt race tracks, for the low end torque to create faster speed. I'll be back for info soon I'm sure!
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Old 12-04-2015, 05:07 AM
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There is actually a webiste called picardfacepalm.com? Holy ****.
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Old 12-04-2015, 01:24 PM
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Originally Posted by fastnugly
Wrapping your pipes does for sure create a lot more horsepower.....You will get more out of wrapping your pipes, than you will ceramic coated headers (Dyno shows that,not just because I'm in that business)
What do you consider to be "a lot" more power, vs. a ceramic coating?

Originally Posted by fastnugly
...& some extra back pressure, mainly your burning off those extra fumes in the exhaust.
More backpressure? From external wrap? I'm sure as an industry professional what you meant to say here is "improved exhaust gas velocity".
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Old 12-04-2015, 02:32 PM
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There is absolutely nothing wrong with wrapping headers.
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Old 12-04-2015, 10:32 PM
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Default My experience with open Long tube headers on an ls1
Originally Posted by fastnugly
...
Wrapping your pipes does for sure create a lot more horsepower & some extra back pressure, mainly your burning off those extra fumes in the exhaust.
...
The curves in your headers are different to create more or less back pressure for certain engines or uses.
...
No, not backpressure, but exhaust gas velocity...

( exhaust gas velocity helps combustion chamber scavenging to help torque, back pressure hinders it )
Last edited by joecar; 12-04-2015 at 10:42 PM.
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