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Where did my .2 and 1.5 mph go?

This is a discussion on Where did my .2 and 1.5 mph go? within the Drag Racing forums, part of the Racing Forums category; Hey all- I have a question about suspected power loss. I bracket race at rfr in Wisc., and the last ...

  1. #1
    Confused mplss's Avatar
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    1998 camaro ss

    Unhappy Where did my .2 and 1.5 mph go?

    Hey all-

    I have a question about suspected power loss. I bracket race at rfr in Wisc., and the last two years in April, I made my 2 best ever passes. 13.086 @108.44 in april of '05, and 13.046 @108.77 in april of '06. This april, I cant get into the 13.teens, and my traps are around 106, the only difference being the addition of ngk-55I iridium plugs-does my car not like these plugs, or should I be thinking slipping clutch/bent pusrod, etc.? Any input would be greatly appreciated-sucks to lose ground.
    98 ss #1978 black, 6spd., loudmouth, ls6 intake, pro 5.0, amw catch can, mti clearlid, slp ramair, 275/40 nitto drs, all the free stuff, Pacesetter LT's, ORY, HiTech tune. 345RWHP, 352RWTq. 12.774 @ 109.91 1.99 60'.

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    Member 98ls1blackbird's Avatar
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    Its probably the air, if the atmospheric pressure was low and high humidity, it will kick the shit out of your performance. Ive seen two three tenths from mid summer to late fall. Try to find a racer with a weather station and find out the density altitude and keep track of the performance with different DA's.

  3. #3
    Bolt-On Pimp ImpalaSSpeed96's Avatar
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    So by 13.teens you mean 13.15 for example? Cause if you can't break 13's period, there's definitely a problem. Otherwise, weather can easily cause you to lose 2 tenths. It can even cause you to lose half a second.....
    96 Imp SS- 12.74@103, 1.74 60' out of fuel

    06 AWD TB SS- 12.58@106, 1.76 60'

    01 Camaro SS- Totaled

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