[QUOTE=elusiv,Oct 18 2006, 11:22 PM]Just out of curiousity, where did you come to this conclusion? Is this a personal observation or was there a thread that discussed this specific topic?

Never knew 02-03's push out a few ponies more than the previous years. Glad I have an 02

 

Ah, forgot about that. I never paid attention too much to MY's and dyno results. I always wrote any differences off as the normal variation between dynos and dyno conditions.

 

There may actually be a way to make over 320 WHP without replacing the stock injectors, but it hasn't been proven yet. Richard Paul (AxialFlow Engineering) is planning to provide fuel enrichment for his axial flow supercharger by using one or more extra injectors that spray the fuel directly into the supercharger vanes. He has already tested this and decided that the charge cooling that takes place because of the latent heat of the fuel negates the need for auxiliary charge cooling. The extra injectors will have to have some kind of electroinc control independent of the stock ECU, and it is the number and size of the auxiliary injectors that will set the limit the max boost and power. According to Richard, the axial flow supercharger will cause the gasoline to evaporate totally so the fuel will not puddle in the intake, but I'm not positive that's actually going to work in practice. Our manifolds are designed to carry only air, and the bends may be too tight to carry a mixture without problems. We'll find out for sure when he finally gets around to putting one of the superchargers on an S2000. It's going to be interresting to see if he can actually make it work. To pass an emissions test all you'd have to do is pull the supercharger belt and (possibly) disconnect the extra injector(s).

 

Dyno runs do vary quite a bit, but on average you'll see that the later cars actually do make a little more power. In theory at least, since they run a little leaner, they should also get slightly better gas mileage.

 

I think its more like 330-350 is just about the absolute max you can go with stock injectors although its not recommended to go above much more then 330ish

 

Faster and better gas mileage for the 02-03 years? Forget the AP1 vs AP2 debate, MY02-03 AP1's are the best of the bunch LOL

As for the dyno runs, its good to hear that my tuner wasnt just pulling my leg and giving me slightly higher readings to satisfy his customer. My dyno plots seemed a tad on the high side, but i guess if im comparing to an FI'd MY00-01, that would explain the discrepancy.

 

I'm allowing for a reasonable safety margin. Comptech will tune a customers car to make (in the neighborhood of) 320 WHP (pully change and tuning) but no more, and I don't think it's wise to push the injectors to the ragged edge (we're already close at 320) for what amounts to a small increase in power. The absolute max probably varies from car to car. AP2's might easily make 330 or more on their stock injectors, but I really don't know. I rarely look at what people are doing with their AP2's, because they're a different animal.

 

[QUOTE=elusiv,Oct 19 2006, 12:34 AM]Faster and better gas mileage for the 02-03 years? Forget the AP1 vs AP2 debate, MY02-03 AP1's are the best of the bunch LOL

 

Agreed. You'll sooner turn your injector spray pattern into a jet stream if you try for 350