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      05-17-2010, 02:28 AM   #86
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Drives: E92 M3
Join Date: Sep 2006
Location: San Diego, CA USA

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Originally Posted by DaFish View Post
we do see videos of E46 M3 cars with 4.10 beating stock geared cars....
The differences between FD and stock in many cases will be even smaller than car to car differences. Cars can have quite a few percent variation in power based on their state of break in. Those cars may very well have had other mods as well. The only way to discern this definitively is to use the same car, instrumented tests, before and after mods, with multiple runs to do some simple averaging. One race/test when very close only tells you about that race/test. Multiple races tell you reality about which car performs better.

Originally Posted by DaFish View Post
We should be able to see an improved torque curve for sure. I would love to see the 0-60 times before and after....that would put this issue to bed.
A FD ratio mod changes the torque at the wheels. Of course you can measure that after doing a FD mod. An improvement to that spec will provide an improved in gear "punch". The real metric that determines overall vehicle performance is simply power (to the wheels) to weight ratio. The only way to really get improvements in performance is to better this ratio. Again there is no such thing as a free lunch. Also 0-60 is too much of a traction and driver launch skill race. It is by far from the best way to show the difference between stock and modded FD ratio.
E92 M3 | Space Gray on Fox Red | M-DCT | CF Roof | RAC RG63 Wheels | Brembo 380mm BBK |
| Vorsteiner Ti Exhaust | Matte Black Grilles/Side Gills/Rear Emblem/Mirrors |
| Alekshop Back up Camera | GP Thunders | BMW Aluminum Pedals | Elite Angels |
| XPEL Full Front Wrap | Hardwired V1 | Interior Xenon Light Kit |