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      05-12-2010, 11:17 PM   #53
swamp2
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Drives: E92 M3
Join Date: Sep 2006
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Quote:
Originally Posted by H Bomb View Post
i just took my car out for a nice ride. you can keep your graphs and science project bc the diff is MMMazing!! love it.
Your unwillingness to accept that science and engineering actually work is really unfortunate. What century are we living in? If you read the thread over carefully that I referred you to you would learn a lot. I am not saying there is anything wrong with going for feel. The key point is that higher FD ratios do give you improved in gear torque to the wheels. However, with the mod you get to redline quicker in each gear and then have to shift. During this shift and after (until the stock car shifts) the stock FD car will still be in the lower gear and pulling WAY harder than you in your next gear. This is the KEY tradeoff with diffs. There is no such thing as a free lunch. The "graphs" and "science project" show all of this quite nicely. The end result is with a FD mod most key performance metrics are not significantly improved (say 0-60, 1/4 mi, 0-100, 60-130), some may be slightly better, some slightly worse and that is A FACT. Again IN GEAR results will generally be improved, some quite significantly.

I always try to take an approach in discussions that help folks learn a bit more. I'm intensely skeptical of many mods and I think that does a bit of a service to our forum members. Bashing science and engineering, the very things that produced your car (and every car you've owned) and even this great new diff really does not buy you increased credibility.

Last but not least, even though butt dynos inevitably mislead folks, I don't think you are being misled in what you feel in your car. Of course you can imagine what anyone should really ask for - careful measurements of specific performance gains (or losses) before and after such a mod. I know if I was going to drop $4k I'd certainly want to run the simulations and see some actual tests. Someone really should do this and share the results with the forum.
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E92 M3 | Space Gray on Fox Red | M-DCT | CF Roof | RAC RG63 Wheels | Brembo 380mm BBK |
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