Originally Posted by Ks320,Apr 13 2008, 04:18 AM

both the stock cars have f20c engines

the red one has shorter final gear

i would like to look at that video as a ap1 vs ap2 suspension thing ...

Originally Posted by RED MX5,Apr 12 2008, 12:18 PM

The way I measure my WHP is more conservative than most dynos, so I'm not sure that direct comparisons really tell us much, but the early AP1's like mine have the lowest output of any of the cars, and with the temperatures in the 90's and at an altitude of 550 feet above sealevel, my uncorrected measurements were around 187 WHP (back when the car was bone stock). I never did any measurements with the stock car in cooler weather, but of course the numbers would be a little higher if it hadn't been so darn hot. The MY02-03 cars run a little leaner and make a little more power as a result (due entirely to differences in the ECU), but I don't recall seeing any of the later AP1's making over 200 WHP while still bone stock. On any given day and dyno, the range from the weakest to strongest S2000 is under 20 WHP, and the weakest AP1's still reach 60 MPH quicker because of the gearing difference and the extra shift required with the AP2. It's really the added low end torque of the F22C that improves the cars drivability, and IMO there are much better reasons for selecting an AP2 (or for that matter an AP1) than just the differences in WHP. There are differences (on both sides) that can be felt, and enjoyed, but the difference in peak power isn't one of them. It's offset by extra weight and larger tires, and doesn't even make the AP2 quicker in the best quarter mile times we've seen. But dang it, I have to say that I think buying an S2000 becuase of its horsepower, 0-60 time, or quarter mile time, doesn't make a lot of sense to me. If those are the things that matter most, neither AP1 nor AP2 is going to be a great choice. Heck, you can build a quicker Miata (starting with a used car) cheaper than you can buy any (stock) S2000 that hasn't been trashed and/or abused.

Originally Posted by Ks320,Apr 13 2008, 05:18 AM

I believe it was more like 4.56, based on where the car was hitting the rev-limiter in the video ... I just used a gearing calculator and checked out the vehicle speeds had the car used different final gearings.

The translation was a bit messed up. In the beginning the narrator said the car only has intake and suspension mods. Then later he goes and says the car also has shorter final gearing.

Originally Posted by s2000Junky,Apr 18 2008, 11:50 PM

yeah I think they said it was 4.30 didn't they?

Originally Posted by s2000Junky,Apr 18 2008, 10:50 PM

yeah I think they said it was 4.30 didn't they?

Originally Posted by Ks320,Apr 19 2008, 09:14 PM

That was from the English translation ... unless you unrdetsand Japanese? I was suspecting there is something wrong with the translation, that's all.

Anyway, I'm just making sure. Cuz when I plug 4.3 into gear ratio calculator, it looks like the car should be going faster than when the car hit the speed limiter. But then I could be wrong, because the S's digital speedo does delay a bit when under hard acceleration.

In any case, if it really is 4.3 ... looks like 4.3 really is quite a good change for AP1s! Maybe I should look into that. Always thought 4.3 and 4.4 gears wouldn't be aggressive / big of a change enough to produce any noticeable improvements