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Why would my car run slower?

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Old May 29, 2004 | 03:34 PM
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From: Loveland CO
Default Why would my car run slower?

I ran again last night but this time with 4:10's and I ran a half second slower. I was running 13.1@114 last year and last night the best I could get is a 13.3@114. I had my car dyno'd a while back after tuning and it was all over the place. Any reason my car would keep a tune? Thanks, Kaley
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Old May 29, 2004 | 03:58 PM
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Default Re: Why would my car run slower? (2C5only21)


Considering your MPH has stayed the same my guess is that your traction has gotten worse.

Mark

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Old May 29, 2004 | 04:00 PM
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Default Re: Why would my car run slower? (mdhmi)

My 60' times are 2/10ths better. Kaley
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Old May 29, 2004 | 04:05 PM
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Default Re: Why would my car run slower? (2C5only21)


Can you post your before and after time slips?

Mark

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Old May 29, 2004 | 05:09 PM
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From: carmel Indiana usa
Default Re: Why would my car run slower? (2C5only21)

I ran again last night but this time with 4:10's and I ran a half second slower. I was running 13.1@114 last year and last night the best I could get is a 13.3@114. I had my car dyno'd a while back after tuning and it was all over the place. Any reason my car would keep a tune? Thanks, Kaley
1. Weather conditions should always be considered....My car ran 2 tenths faster only after a 22 degree drop in temperature....generally, cooler air is better racing weather
2. Your tires...you may be getting better 60 foot times, but they could not possibly as good as they were last year for the simple fact that they're a year older...and harder.
3. Judging from your mph, the engine is fine.
4. When was the last time you had an alignment done ?...These cars can get out of whack every 4-6 months when you're racing them on a track.

Hope this helps :)


[Modified by ledfoot, 4:13 PM 5/29/2004]
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