Looking at a stock 03 dyno now I see 40hp jump (125hp - 165hp) from 6k to 6.5k before the curve starts to flatten slightly.

http://www.dragtimes.com/images_dyno...S2000-Dyno.jpg

 

I recently purchased a 05' w/ 30k miles; it doesn't kick in like my 06' did. I guess it could be the consistent 100 plus degree days though, if not I need a tuner in Houston.

 

That one shows a less obvious jump before the steeper power curve than some others, but if you look right at 6k when VTEC switches, there's is a 7-10 hp jump, then the power curve is steeper which gives that 40hp increase over 500RPM btu that is the steeper power curve as opposed to the instant kick you get when the VTEC switches. If that instant kick was 40hp it would break the tires loose.

I do see your point and I think we were talking about different things, I was refering to the instant jump, wheras you were reffering to the total increase after VTEC

 

How about this one?

 

How can you not notice it?

S is pretty mundane up until VTEC range, then it actually moves. I've only driven F22C.

 

That shows what I am talking about a little better, look at the top plot: in a 100rpm band from 5900-6000 there is an instant small jump from about 125 to about 132. then you get a less instant increase at a much steeper rate than Pre-Vtec after that point.

 

When the high cam engages you get all the power but the mechanical inertia has to catch up. I wouldn't read into the dynos so literally.

The high cam in the F20 gives a 30-40 hp bump immediately but there's no overcoming the laws of physics.

I'm not sure you quite understand how the VTEC system, or engine gearing and mechanical advantage, works.

 

A 500 RPM range isn't that much, especially in a S2K. It's not literally instant, but quick enough to say "30-40 horsepower jump."

 

A 500 RPM range isn't that much, especially in a S2K. It's not literally instant, but quick enough to say "30-40 horsepower jump."
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In reality it is opinion what one calls a "jump." to me a "jump" implies a lack of smoothness... in the car the sudden, not smooth, kick occurs instantly, and over a max of 150RPM (IMHO more like 100) the rest of the 30-40hp over the 500RPM increase is definitely strong, but feels smooth. Not saying you guys are wrong, merely explaining why I view it differently

 

I suppose it's a matter of perception but in my car the jump from 6k to 6.5k happens in an instant, not smooth at all in the lower gears. As I said earlier the tires break loose under certain circumstances - before I went to wider tires.