1. This has been suggested as an alternative to 4.77 gears.
2. It seems like this would interfere with cruising a highway speeds.
3. Vtec engages at 6000 rpms, if tuning it lowered it to 4000 rpms for engagement of Vtec, you would be in Vtec going 75 mph on the freeway since 4000 rpms=75 mph (for me with 225 and 255 Conti DWS A/S tires).
4. Am I missing something?
5. I have read about this, but not frequently; there must be downsides to it?
6. Those that know me well can just tell me to drop it, insult me, and move on, unless it's a viable idea, which, since no one I know with an S has done it (people with grey or missing hairs ), I suspect it is a track thing?

 

VTEC won't engage if your at partial throttle. So of your cruising at 75, no matter what RPMs, VTEC won't be engaged. My VTEC is set at 4200 with my supercharger set up. No downsides at all IMO. The only thing you lose is the hard kick at the 6000 RPMs cross over

 

Doddg:

We appreciate your enthusiasm for modifying your son's S2000 for him and all of your technical questions. You should encourage him to get his own account here... and post in the Under the Hood forum or Parts and Modifications forums with his technical and modifications questions.



Moving this to Under the Hood...

 

1. Believe me, since he bought his 04 last August form a guy on this forum, I've encouraged him a 100 times to do that.
2. He just likes driving a convertible with a little zoom zoom (he loved my 94 del sol Vtec he took to college and never gave back 10 yrs ago.
3. We hunted all last summer for a car, and he decided on an S after driving a dozen others out there; I'm the one who found what he decided he wanted here on the forum: yellow, high mileage, therefore less expensive, must be AP2.

 

1. I think you missed my apparently all too subtle suggestion about posting in the best sections for your questions (as opposed to posting all of them in S2000 Talk and relying on the moderators moving them for you).
2. There is no 2. Refer back to #1.
3. But we do appreciate your enthusiasm.
4. Good luck with that.

 

1. So, you give up the "turbo-type" kick at 6000 rpms, but more mid-range (4000 rpms and up).
2. Does all the hp and torque kick in at 4200 like it does at 6000, or does it gradually build up?
3. Since you have a SC, you don't know how that affects mileage.
4. Do people get this in addition to some other mod, and not independently?

 

1. I think you missed my apparently all too subtle suggestion about posting in the best sections for your questions (as opposed to posting all of them in S2000 Talk and relying on the moderators moving them for you).
2. There is no 2. Refer back to #1.
3. But we do appreciate your enthusiasm.
4. Good luck with that.
[/quote]

A. Sorry, I don't do subtle.
B. I did miss that with my follow up thread on lowering Vtec engagement.

 

You still get a small kick but nothing like the 6000 RPMs crossover. With a good tune the car will make more power all across the power and making the car easier to drive.
My gas mileage has definitely dropped since going SC. I used to DD the car, now I drive it half the week and do almost no highway driving so gas mileage has dropped .
You can get the car tuned with other mods to take advantage of all the potential power. You can also get tuned completely stock and still have benefits. One last thing, with the stock catalytic converter the VTEC shouldn't be lowered anything belowe 5300 or sometching like that. The cat is restrictive and there is really no power to be made by lowering it more. Having a test pipe of high flow cat allows more freedom with VTEC points

 

Incorrect

 

How so? VTEC engages based upon throttle position, engine temp, RPM and oil pressure. It's been my understanding that if all of those requirements aren't met, VTEC will not engage. It's not purely RPM-based.