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cooler air = more power?

This is a discussion on cooler air = more power? within the External Engine forums, part of the LSx Technical Help Section category; I've gotta pull my intake this weekend to replace knock sensors my question is while i've got the intake off ...

  1. #1
    Member crazy dave ls1's Avatar
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    cooler air = more power?

    I've gotta pull my intake this weekend to replace knock sensors my question is while i've got the intake off would a sheet of insulation/hi-temp dynamat between the intake and valley do any good?to keep the intake charge cooler?

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    Senior Member ss~zoso~ss's Avatar
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    cooler air does equal more power and increased efficiency, as far as your idea, i'm not sure

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    Life in the Fast lane sunsetorangess's Avatar
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    Not a good idea, in theory but i wouldnt do it.
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    cutting and welding mark21742's Avatar
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    if you have it laying around, why not try it?

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    Impounded
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    I wouldnt put dynamat there. Maybe the same material that you put over starters. Dynamat is more of a sound deadner.

    Youll see maybe a 2 HP gain if that.

    Dynamat would make a sticky mess.

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    cutting and welding mark21742's Avatar
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    make sure if you do put anything there it doesnt keep the intake from sealing

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    Member stephen02ws6's Avatar
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    what about heat reflective tape? that might work in that place.

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    Quote Originally Posted by mark21742 View Post
    make sure if you do put anything there it doesnt keep the intake from sealing
    Yeah I dont know the gap from the valley cover to the intake but thats a major issue. I know if might cause the knock sensors either to last longer or rust because of water being trapped as well

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    2004 HEAD/CAM CTS-V 9t8z28's Avatar
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    If you got a hile mileage car, you might need the connectors w/ harness for the knock sensors. They get very brittle and break easy since they are a PITA to get off.

    As for the dynomat, it easily becomes a slop under there so I wouldn't bother.

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    Senior Member karpetcm's Avatar
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    You get about 1% increase in hp if you drop 10 degrees from your intake temp. So you would have to drop alot of degrees to achieve a real gain. As it is if your car is running properly i wouldnt worry about it nor do it. If your curious then its up to you and preference either way GL.

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    Grand Imperial Wizard Sarge's Avatar
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    Few things to consider on any cold air mod. Firstly folks will get confused and rationalize only small gains from temp drop at WOT or Dyno runs.....allow me to offer another angle....heat soak and the time it takes you to recover from heat soak.....
    Bear with me here.....You set at a stop light for 2 minutes before you get moving again...and your intake temps are raised 20 degrees....both from the ambient temps of no air moving +heat from the asphalt...and of course radiator/engine heat.....you guys running a MAF will see timing being pulled quickly.....so you move away from the light and start moving...it will take your IAT/MAF setup a good couple of minutes to readjust that timing retard....so your running around from the light with timing pulled for awhile......so the reason we wrap/insulate as much as we can is to minimize that heat soak....not so much to reduce intake temps......

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    Member crazy dave ls1's Avatar
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    thank you sarge for breaking that down to me and all you other guys,that really makes alot of sense.just trying to wring every little bit out and sometimes over analyze.

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    MANWHORE TEAM suede's Avatar
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    I would try some kind of heat reflective material, dynamat would be a no go, but should help a little bit

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    Senior Member ss~zoso~ss's Avatar
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    Quote Originally Posted by Sarge View Post
    Few things to consider on any cold air mod. Firstly folks will get confused and rationalize only small gains from temp drop at WOT or Dyno runs.....allow me to offer another angle....heat soak and the time it takes you to recover from heat soak.....
    Bear with me here.....You set at a stop light for 2 minutes before you get moving again...and your intake temps are raised 20 degrees....both from the ambient temps of no air moving +heat from the asphalt...and of course radiator/engine heat.....you guys running a MAF will see timing being pulled quickly.....so you move away from the light and start moving...it will take your IAT/MAF setup a good couple of minutes to readjust that timing retard....so your running around from the light with timing pulled for awhile......so the reason we wrap/insulate as much as we can is to minimize that heat soak....not so much to reduce intake temps......
    Click for full size
    man look at all those stickers, no wonder your car is so fast..

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    Member stephen02ws6's Avatar
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    Quote Originally Posted by ss~zoso~ss View Post
    man look at all those stickers, no wonder your car is so fast..

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    MANWHORE TEAM suede's Avatar
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    Quote Originally Posted by ss~zoso~ss View Post
    man look at all those stickers, no wonder your car is so fast..
    that and the rainbow array of colors... automatic 33.3333 hp....

  17. #17
    Member stephen02ws6's Avatar
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    Quote Originally Posted by suede View Post
    that and the rainbow array of colors... automatic 33.3333 hp....
    add primer to a fender and thats even more power. haha j/k

    There was some foam pads on the bottom of my intake manafold when i took it off yesterday.

  18. #18
    15 sec. Oh yeah, its fast UTVols98's Avatar
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    At WOT air goes through the intake in a fraction of a second, so it really doesn't have a chance to heat up before it enters the cylinder. Doesn't seem like a logical thing to try.

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    Now Oprah I bet she doesnt have that crap under her intake . lol. Outside the intake its probably worth it but with an f=body it wouldnt be practical to wrap 5 inches of intake lol

  20. #20
    MANWHORE TEAM suede's Avatar
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    Quote Originally Posted by UTVols98 View Post
    At WOT air goes through the intake in a fraction of a second, so it really doesn't have a chance to heat up before it enters the cylinder. Doesn't seem like a logical thing to try.
    Air is only in a turbo less than that, but ppl still use intercoolers....

    I know major temp differences but still same principle just on a smaller scale

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