You looked at the top end....do yourself a favor and go back and look at the dyno sheet again...this time look at the HP increase at VTEC engagement...there's almost a 50 hp increase in the midrange....that's where you spend 95% of your driving, especially if you're autocrossing...

 

nah look again. the bright red line is stock hp, bright blue is twm's. at 6k rpm's stock is at about 155ish, twm 175. and how is there more at midrange? Look at the lines, they get farther apart as they go up, which means more hp difference. the only spot where they get closer is at 8k.

 

Now go back and look at 5800 rpm...I see 40 rwhp gains right there.
The additional airflow warrants the ability to move the VTEC engagement point down, thus allowing much more power much sooner than normal. The ITB setup's HP rockets up around 5700 rpm...the stock motor doesn't start to play catchup till just shy of 6000 rpm...It the mean while, the ITB car had a 40+ hp kick in the pants 300 rpm's sooner than you did. The stock motor gains some ground after VTEC engagement, but it never come close to catching the ITB setup the rest of the way to redline. To me the answer is obvious.

 

so you're saying hitting vtec 300rpm's sooner is the same as 40 extra hp in midrange? AP2 hits vtec 500rpms sooner so i guess it has more hp than AP1? my point is u r not gaining that hp just cuz u get it sooner.

 

All I'm saying is look at the HP curves between 5000 and 6000 rpm. Specifically, look at 5800 rpm.

My point is the increase in power comes sooner, and stays. An ITB car will pull on a stock car from 4000 rpm on up, then lurch away at 5700 rpm. The ITBs allow an earlier VTEC transition because the airflow is there to make more power.

I interpret the dyno obviously differently than anyone else in here. I'd still get this setup before I'd go boost anyday.

 

On the dyno sheet, how much of the gains do you guys think are attributable to the AEM EMS alone?

 

Probably a decent bit of it...from what everyone is arguing...

 

The difference is with ITBs youll easily surpass a car with a CAI and a bored out TB. The difference is tremendous especially from a short distance. check this video of Fuji's Miata vs a single throttle body miata with some street prepared mods.


http://fuji-racing.com/fujiracing_052.htm

Take a look at the launch and see the difference.

 

How fast do you think ITB's with 4.57 gears, exaust, header, LSD, etc. can run on the quarter mile?

 

high to mid 12s dependin on driver