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High RPM smoke

This is a discussion on High RPM smoke within the General Help forums, part of the LSx Technical Help Section category; Anyone else get a little smoke a high RPMs? Around 5K-6k the only time I see any....

  1. #1
    Sarge for AAG Emperor hutch1999's Avatar
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    High RPM smoke

    Anyone else get a little smoke a high RPMs? Around 5K-6k the only time I see any.

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    O U 8 1 2 Spaz's Avatar
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    Quote Originally Posted by hutch1999 View Post
    Anyone else get a little smoke a high RPMs? Around 5K-6k the only time I see any.
    what color is the smoke!? that is usually not good... doe your engine eat a lot of oil???

  3. #3
    Sarge for AAG Emperor hutch1999's Avatar
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    06 HD Softail
    1998 Trans Am m6

    It doesnt use any oil, and im never on it like that anyway. Normal driving im usually alway under 2500rpms. I havent had it up at those rpms since late last fall. Its dark but like I said it only does it around 5k-6k where i usually never drive it at.

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    Sarge for AAG Emperor hutch1999's Avatar
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    06 HD Softail
    1998 Trans Am m6

    Pacesetter LTs, ORY, No cats, Flowmaster muffler. Needs a tune bad.

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    The Bandit Wesman's Avatar
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    If its black smoke, its probably just running rich, and its especially apparent since you have no cats. I've seen brand new high performance cars puff a small cloud of black smoke on acceleration, not a big deal unless its constant or there is a lot of it.

  7. #7
    Sarge for AAG Emperor hutch1999's Avatar
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    06 HD Softail
    1998 Trans Am m6

    its black and im running super rich right now. It doesnt do it all the time, only under hard acceleration

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    I don't sell out! blackSS01's Avatar
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    I would say if you are rarely on it, it may be carbon build up, and taking it that high of rpms would help clear it out. That is, if the smoke is black, if the smoke is blue then that is oil but if it doesn't use oil then I think your fine. That would be my guess.
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    Sarge for AAG Emperor hutch1999's Avatar
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    06 HD Softail
    1998 Trans Am m6

    the smoke was black, and it doesnt use any oil. And ive been really easy on it and rarely drive it to redline.

  10. #10
    I don't sell out! blackSS01's Avatar
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    I would say carbon build up then. You need a tune, but if it was running THAT rich it would puff black under any hard acceleration, not just high rpms. That's just my .02.

  11. #11
    Veteran 0rion's Avatar
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    it's because you're too rich.

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    black
    1999 T/A

    I don't know why everybody says long tubes make your car run rich. when i got my tune it was at something like 14.4:1 at WOT after the install... and it smoked a lil at high rpm before it was tuned then it went away as soon as it was richened up.

  13. #13
    Sarge for AAG Emperor hutch1999's Avatar
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    06 HD Softail
    1998 Trans Am m6

    hopefully it will go away soon as I get my pcm tuned

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    LS1 or bust b.lee's Avatar
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    Quote Originally Posted by hutch1999 View Post
    hopefully it will go away soon as I get my pcm tuned
    It should,
    You need to get the car up on a dyno for a tune.
    By someone that has tuned many ls1's in the past

  15. #15
    Sarge for AAG Emperor hutch1999's Avatar
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    06 HD Softail
    1998 Trans Am m6

    the only dyno tuner close to me i know of is Speed inc and thats about 5 hours away. As of right now the plan is to get frost to tune my pcm for me.

  16. #16
    I don't sell out! blackSS01's Avatar
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    I would say you can't go wrong with either. 5 hours is quite a drive though. Frost knows his shit about tuning.

  17. #17
    Sarge for AAG Emperor hutch1999's Avatar
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    06 HD Softail
    1998 Trans Am m6

    Quote Originally Posted by blackSS01 View Post
    Frost knows his shit about tuning.
    thats what I hear, so Im gonna give him a try soon as I can ride my bike full time as a DD

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