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So what will cause me to lose 10+ mph on the dyno?

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  • So what will cause me to lose 10+ mph on the dyno?

    I'm just trying to figure out whats wrong with my car. In march of 09' the car did 131 in 4th gear with a 26" tall tire on the dyno, now in 2010' same dyno but different days the car will only do like 120 in 4th gear on the dyno.

    I haven't change anything to the car drive line. Soooo what in the hell would cause this to happen?

  • #2
    That is kind of strange, would be interesting to find the cause of that. Oh yes it was nice to met you guys last night at the pig, Your camaro sounds great. Hope I get to see it run this year.
    Last edited by MR.hp; 05-31-2010, 10:25 AM.

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    • #3
      Yeah, BLU BYU. Nice to meet you guys last night.

      Not sure about what caused the mph diff. Probably doesn't matter though.

      Your car sounds healthy and you're making some nice power with your new tune.

      Look forward to seeing you make a few passes at the track.

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      • #4
        Originally posted by MR.hp View Post
        That is kind of strange, would be interesting to find the cause of that. Oh yes it was nice to met you guys last night at the pig, Your camaro sounds great. Hope I get to see it run this year.
        Yeah it was nice finally meeting you too. She will run this year. dance

        Originally posted by Z28SSMAN View Post
        Yeah, BLU BYU. Nice to meet you guys last night.

        Not sure about what caused the mph diff. Probably doesn't matter though.

        Your car sounds healthy and you're making some nice power with your new tune.

        Look forward to seeing you make a few passes at the track.
        Yeah you too, I can't wait to see you guys run at the track too.

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        • #5
          Hey are you guys running at a track this year?

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          • #6
            Mr.Hp was talking about setting up a drag day or nite at Grove Creek. I plan on going to RF a couple times this year.

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            • #7
              Im all about cedar falls! im not a fan of the rock.

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              • #8
                Originally posted by BLU BYU View Post
                I'm just trying to figure out whats wrong with my car. In march of 09' the car did 131 in 4th gear with a 26" tall tire on the dyno, now in 2010' same dyno but different days the car will only do like 120 in 4th gear on the dyno.

                I haven't change anything to the car drive line. Soooo what in the hell would cause this to happen?
                Is your car an auto? If so, its possible that in 09 the torque convertor clutch was locked up, and this year it didn't have a chance to lock up during the pull..

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                • #9
                  Originally posted by OSOFEW View Post
                  Is your car an auto? If so, its possible that in 09 the torque convertor clutch was locked up, and this year it didn't have a chance to lock up during the pull..
                  Nope I bang the gears. I had a 26" tall tire both times too.

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                  • #10
                    Is it possible you were drunk?

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                    • #11
                      Originally posted by BLU BYU View Post
                      Nope I bang the gears. I had a 26" tall tire both times too.
                      Ok next question then. Were they both radials each time?

                      Also was there a significant differance in power?

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                      • #12
                        Git it to the track and don't worry about dyno numbers.
                        90 5.0 GT New combo
                        11.84 @ 113 1.64 60' Dynoed 428hp 419tq Dyno Vid Dyno sheet

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                        • #13
                          Originally posted by Jonny Piff View Post
                          Is it possible you were drunk?
                          Nope Ron showed me the graphs and clearly I'm losing 10 mph.

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                          • #14
                            Originally posted by OSOFEW View Post
                            Ok next question then. Were they both radials each time?

                            Also was there a significant differance in power?
                            Yep both were radials

                            Originally posted by fastkeen View Post
                            Git it to the track and don't worry about dyno numbers.
                            Yeah and thats the thing I'm running low 12's high 11's when it should run lowwww 11's to high 10's n/a

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                            • #15
                              Hahahaha...............shoulda, woulda, coulda! :funny shit:
                              2001 Trans Am All Motor 9.75 @139mph

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