LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Car off by 3-4 MPH in the 1/4

Old Aug 27, 2006 | 10:55 AM
  #16  
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Re: Car off by 3-4 MPH in the 1/4

Originally Posted by 30696bird
I had an exhaust leak and my times got progressivly worse as the night went on.......cooler temps and worse times (and speeds). My header gasket was blown in two though.

Yea I still have stock manifolds and I can hear the ticking of what sounds like an exhaust leak. Would it really throw my times off that much???
Old Aug 27, 2006 | 11:05 AM
  #17  
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Re: Car off by 3-4 MPH in the 1/4

Originally Posted by buzz12586
I understand that weather makes a huge difference. I ran a 14.0 @ 100 when it was 95 degree with like 80 percent humidity. The other night when I went it was low 70's with about 65 percent humidity and I could only get a 14.2 @ 97 out of it.


I'll try datalogging it and see if I am getting a lot of knock. I have a MadZ28 tune and I thought he turned down the sensitivity on the knock sensor.


In that case pay attention to track temp as when the temp on the track falls and especially as it comes close to the dew point traction will get bad.
Old Aug 27, 2006 | 11:23 AM
  #18  
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Re: Car off by 3-4 MPH in the 1/4

Traction is not a problem at all. Cutting identical 60'. As far as a tune up the only things I haven't done recently are coil, O2s, and opti.

Last edited by buzz12586; Aug 27, 2006 at 04:40 PM.
Old Aug 27, 2006 | 11:39 AM
  #19  
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Re: Car off by 3-4 MPH in the 1/4

If I take a datalog of a couple runs would someone be able to look at it for me. Thanks.

Last edited by buzz12586; Aug 27, 2006 at 04:40 PM.
Old Aug 27, 2006 | 12:29 PM
  #20  
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Re: Car off by 3-4 MPH in the 1/4

Did you get it figured out?

Give me a hollar if you need some help figuring it out, I can swing by.
Old Aug 27, 2006 | 12:44 PM
  #21  
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Re: Car off by 3-4 MPH in the 1/4

No I still don't have a clue what it is. I'm probably gonna data log it when I get home and see if anything is out of the ordinary. I'll let you know.
Old Aug 27, 2006 | 02:00 PM
  #22  
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Re: Car off by 3-4 MPH in the 1/4

Hey can't you boys just all get along.... geeeeez.
Old Sep 2, 2006 | 04:14 PM
  #23  
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Re: Car off by 3-4 MPH in the 1/4

I took and data logged my car but I don't see anything jumping out at me. Would someone else mind taking a look at it??? I'll e-mail it to whoever wants to see it. Thanks in advance.
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