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Forced Induction Superchargers | Turbochargers | Intercoolers

D1sc help

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Old Oct 8, 2009 | 01:52 PM
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Default D1sc help
trying to figure out why I am trapping the same mph from 1000ft to 1/4 as before with cam only. Everything is done right and the tune has been checked three times or so. The car ran 11.90 and picked up 10mph before, and now runs 10.80s and picks up 11-12mph. Thats with an extra 230rwhp. Just doesnt seem right to me since its a FI car, it should be pulling like crazy up top. If anyone is interested in helping me I will give more info on my setup. Just didn't think it would be worth my time to type it all out here.
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Old Oct 8, 2009 | 04:31 PM
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tell us more about your setup.
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Old Oct 8, 2009 | 05:09 PM
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Do you have a log?
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Old Oct 8, 2009 | 09:18 PM
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yeah the tuner has logged it on the street like five times but not at the track yet. And the set-up is a 8 rib d1sc with fmic 60lb, two pumps, ls6 intake, 224 cam, boltons, full suspension. Car runs 10.80's @125 1.51 60ft. with a 28 tall tire, 12 bolt w/4.10's m6 3 inch steel ds. Car makes 630rwhp at 12lbs.
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Old Oct 8, 2009 | 10:23 PM
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Weight?
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Old Oct 9, 2009 | 07:45 AM
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3864 lbs
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Old Oct 9, 2009 | 09:02 AM
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Check your A/F ratio on the logger at the end of the run.
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Old Oct 9, 2009 | 01:49 PM
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Belt slip is a good guess.
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Old Oct 9, 2009 | 03:53 PM
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trans type/stall type if auto?
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Old Oct 9, 2009 | 05:17 PM
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m6 and the belt looks good because we have thought that but no signs yet.
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Old Oct 9, 2009 | 07:00 PM
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do you shift from 4th to 5th toward the end of the run?
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Old Oct 10, 2009 | 09:30 AM
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no i shift into 4th right at the 1000ft, im only at 6100rpm when I cross the traps though.
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