The Official G-Meter Testing Thread
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Originally Posted by cobradav' post='238175' date='Feb 10 2006, 09:15 PM
I am beat after doing about 4 hours of deck washing and more to do tomorrow. But I WILL get some runs in tomorrow, I WILL get some runs in tomorrow, I WILL get some runs in tomorrow.
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Originally Posted by Bokke' post='238182' date='Feb 10 2006, 09:37 PM
znod - did your 2nd worst 60 foot time produce your best 0-60 time? How do you explain that?
I am hoping to try some runs tomorrow.....
I am hoping to try some runs tomorrow.....
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I am still trying to justify in my mind how my car with controls on and in D is faster than all my skills(HA HA)and experience can muster.Of course I got to thinking earlier when I said that that drag racers now believe that 0 wheelspin is the fast way down a 1/4 mile.I could never get 0 wheelspin with controls off.With a lot of practice and patience with the controls on I think is the best way to go.If it works for my car it must be possible with others as well.When you get the start right with this method you can feel the difference.I am sure I wil go under 5 sec's with this method in fact I think I already have.
Originally Posted by grogan545' post='238200' date='Feb 10 2006, 10:35 PM
Are you still going to remove your exhaust & throttle body next week?I think it is a good idea,you have to start somewhere.Good luck and keep us informed.
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After analyzing the HP #'s I realized that the peak HP is usually about 57mph.If I calculate the rpm's in Second gear this equates close to the BMW HP peak of 6100 rpm.
I did check the speeds where my car starts to shift.First at 29 mph,second at 60mph.Slightley different then yours but you have shorter tires.
I did check the speeds where my car starts to shift.First at 29 mph,second at 60mph.Slightley different then yours but you have shorter tires.
With your car back to stock it will be a good starting point.My car is stock and I never have been a believer in some cars of the same make & model being significantly faster than another.There is always a reason why one car performs better than another.With all parameters being equal they will perform equal.
Keep the faith and keep me informed.
Keep the faith and keep me informed.
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Originally Posted by grogan545' post='238200' date='Feb 10 2006, 10:35 PM
These alternatives yield columns A, B, and C:
................................A.............B... .........C
Shift Points:
1st to 2nd--
RPM........................6,264......5,358......6,264
Time.......................1.77s.......1.77s...... 2.350
Speed......... ..........30.130.....30.130....35.090
2nd to 3rd--
RPM.......................6,216.......6,090......6,216
Time.....................5.266s.....5.266s.....5.5 30s
Speed..................59.840......59.840....61.16 0
3rd to 4th--
RPM.......................6,224.......5,147......6 ,224
Time...................11.839s....11.839s......11. 4s
Speed..................95.370......95.370....93.74 0
2-Looking at your shift mph/rpm it is apparant that some of the data is not correct with the Pro RR.I agree with you that column A looks like the most correct.You can corraborate all data in column A in either B or C at every point.
................................A.............B... .........C
Shift Points:
1st to 2nd--
RPM........................6,264......5,358......6,264
Time.......................1.77s.......1.77s...... 2.350
Speed......... ..........30.130.....30.130....35.090
2nd to 3rd--
RPM.......................6,216.......6,090......6,216
Time.....................5.266s.....5.266s.....5.5 30s
Speed..................59.840......59.840....61.16 0
3rd to 4th--
RPM.......................6,224.......5,147......6 ,224
Time...................11.839s....11.839s......11. 4s
Speed..................95.370......95.370....93.74 0
2-Looking at your shift mph/rpm it is apparant that some of the data is not correct with the Pro RR.I agree with you that column A looks like the most correct.You can corraborate all data in column A in either B or C at every point.
(5,346 / 6,500(34.28769707) = 28.20
(6,158 / 6,500)61.10243456 = 57.89
And, what is the Step doing between the RPM at which it starts to shift and the RPM at which it ends a shift? Are RPM's increasing in between? Staying the same? Decreasing? I would hope somehow that the answer is increasing.
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Couple of things - Well run 2 is an obvious out lyer and just maybe should be discarded; BMWs supposedly are difficult to pick up RPM (reported on their forum) which may contribute to this. Gtech recommends trying to turn on some electrical devices to help in this regard such as the fan, headlights, etc.
Originally Posted by cobradav' post='238175' date='Feb 10 2006, 09:15 PM
Do you think the RPMs were correct on runs 1 and 3? Did your calibrated eye agree? If not Gtech suggests using higher RPM for the cal mode.
[/quote]
Yep, I interpreted the data incorrectly. I'll have to watch that my self. There are some tools about for editing Pass data and for entering into Excel for further analysis. Obviously I have not tried them yet, but hope to soon.
Some links to these here:
http://www.reasontech.net/PASSedit/
http://members.chello.nl/~r.herweyer/
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[/quote]
Not a burden at all Z-man,I like analyziing data and looking for answers to problems.
Your right about the "sweet spot" and I get more familiar with the start I hope to hit it consistently.You have other problems to contend with now,but once you get your power back I would definitly try my method again.The most difficult step is not getting into the throttle too soon.It sounds easy but when your all "hopped up" to make a speed run it is difficult to control the right foot(speaking for myself).I believe it works best by going to full throttle with steady movement taking about 1 to 1.5 sec's.I tried 6 runs since I started using this method and have hit the "sweet" spot twice.The first time with the results I pm'd to you and the second time was the 5.00 S run.Judging by previous history if I subtract .17 sec from 5.00 I get a 4.83 sec 0-60 in hte N direction(pm data seems more possible now).Two way average of 4.92 sec.
Anxiously looking forward to your results after your remove the modds.
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Originally Posted by cobradav' post='238337' date='Feb 11 2006, 07:40 AM
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These alternatives yield columns A, B, and C:
................................A.............B... .........C
Shift Points:
1st to 2nd--
RPM........................6,264......5,358......6,264
Time.......................1.77s.......1.77s...... 2.350
Speed......... ..........30.130.....30.130....35.090
2nd to 3rd--
RPM.......................6,216.......6,090......6,216
Time.....................5.266s.....5.266s.....5.5 30s
Speed..................59.840......59.840....61.16 0
3rd to 4th--
RPM.......................6,224.......5,147......6 ,224
Time...................11.839s....11.839s......11. 4s
Speed..................95.370......95.370....93.74 0
2-Looking at your shift mph/rpm it is apparant that some of the data is not correct with the Pro RR.I agree with you that column A looks like the most correct.You can corraborate all data in column A in either B or C at every point.
................................A.............B... .........C
Shift Points:
1st to 2nd--
RPM........................6,264......5,358......6,264
Time.......................1.77s.......1.77s...... 2.350
Speed......... ..........30.130.....30.130....35.090
2nd to 3rd--
RPM.......................6,216.......6,090......6,216
Time.....................5.266s.....5.266s.....5.5 30s
Speed..................59.840......59.840....61.16 0
3rd to 4th--
RPM.......................6,224.......5,147......6 ,224
Time...................11.839s....11.839s......11. 4s
Speed..................95.370......95.370....93.74 0
2-Looking at your shift mph/rpm it is apparant that some of the data is not correct with the Pro RR.I agree with you that column A looks like the most correct.You can corraborate all data in column A in either B or C at every point.
(5,346 / 6,500(34.28769707) = 28.20
(6,158 / 6,500)61.10243456 = 57.89
And, what is the Step doing between the RPM at which it starts to shift and the RPM at which it ends a shift? Are RPM's increasing in between? Staying the same? Decreasing? I would hope somehow that the answer is increasing.
[/quote]
I have noticed at times that the step takes much longer to complete a shift.This could be what happened in the "flukey"data you got on some of your shift's.As we know during a shift the engine controls reduce power to facilitate a "smoother" shift to reduce driveline shock.If the shift starts much earlier say 5147 rpm,the power is reduced for a much longer time period thereby causing poor times.Maybe this is the source of your problem.Your dealer redid the engine map,maybe they should try the trans program.
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Not a burden at all Z-man,I like analyziing data and looking for answers to problems.
I believe it works best by going to full throttle with steady movement taking about 1 to 1.5 sec's.I tried 6 runs since I started using this method and have hit the "sweet" spot twice.The first time with the results I pm'd to you and the second time was the 5.00 S run.Judging by previous history if I subtract .17 sec from 5.00 I get a 4.83 sec 0-60 in hte N direction(pm data seems more possible now).Two way average of 4.92 sec.
I believe it works best by going to full throttle with steady movement taking about 1 to 1.5 sec's.I tried 6 runs since I started using this method and have hit the "sweet" spot twice.The first time with the results I pm'd to you and the second time was the 5.00 S run.Judging by previous history if I subtract .17 sec from 5.00 I get a 4.83 sec 0-60 in hte N direction(pm data seems more possible now).Two way average of 4.92 sec.
And, I know where to find your sweet spot instructions. Thanks. Finally, wow, if what you say holds up, then I will be looking forward to a less than 5 sec. average. Happy snow days.