Review: Motordyne M370 Manifold w/ Comparisons

NYBladeZ · 11-19-2010, 12:43 PM

Quote:

Originally Posted by Staples

5th gear loses power on the dyno, so no 4th gear is closer 1:1

Automatic guys run 5th gear in DS mode which is 1:1.

I still think you're wrong, I did my first dyno run in 4th and it was the lowest reading. All subsequent runs were done in 5th, the only thing that people would want to look out for is to keep from having power cut once the car hits 155mph on the dyno, other then that, 5th gear is a 1:1 ratio.

Gear Ratios (Manual)
1st 3.794
2nd 2.324
3rd 1.624
4th 1.271
5th 1.000
6th 0.794
Reverse 3.446
Final Drive 3.692

You should have to worry about hitting the limiter unless they failed to remove it during the UPRev tune.

daisuke149 · 11-19-2010, 12:44 PM

Quote:

Originally Posted by NYBladeZ

I still think you're wrong, I did my first dyno run in 4th and it was the lowest reading. All subsequent runs were done in 5th, the only thing that people would want to look out for is to keep from having power cut once the car hits 155mph on the dyno, other then that, 5th gear is a 1:1 ratio.

Gear Ratios (Manual)
1st 3.794
2nd 2.324
3rd 1.624
4th 1.271
5th 1.000
6th 0.794
Reverse 3.446
Final Drive 3.692

You should have to worry about hitting the limiter unless they failed to remove it during the UPRev tune.

He has a g37. maybe its diff in that car.

Staples · 11-19-2010, 09:31 PM

Quote:

Originally Posted by NYBladeZ

I still think you're wrong, I did my first dyno run in 4th and it was the lowest reading. All subsequent runs were done in 5th, the only thing that people would want to look out for is to keep from having power cut once the car hits 155mph on the dyno, other then that, 5th gear is a 1:1 ratio.

Gear Ratios (Manual)
1st 3.794
2nd 2.324
3rd 1.624
4th 1.271
5th 1.000
6th 0.794
Reverse 3.446
Final Drive 3.692

You should have to worry about hitting the limiter unless they failed to remove it during the UPRev tune.

Quote:

Originally Posted by daisuke149

He has a g37. maybe its diff in that car.

No, you're right IT IS 1:1 in 5th gear. What I should have said was, I made more power in 4th gear then 5th. For some reason, every dyno I have been to I made 15-20 more whp in 4th gear then 5th.

Motordyne · 11-19-2010, 01:33 PM

Quote:

Originally Posted by NYBladeZ

...
You should have to worry about hitting the limiter unless they failed to remove it during the UPRev tune.

You're right about hitting the speed limiter in 5th.

Now that I'm dong the analysis, I noticed what looks like a slight RPM calibration issue on the dyno. The car is run to redline but the plots show only 7300~7400 RPM.

...fairly typical dynajet RPM calibration behavior. Maybe the tire size wasn't entered in exactly correct?
The pre/post results are measured the same way so its all good.

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