Disgustipated

Hi NA friends,

Been looking around for some dyno graphs that show how much power can be gained even on an NA s2000 by lowering VTEC. I already know how beneficial it is, but I'd like some good dyno graphs for my own records and to prove some dumb-ass wrong who claims that lowering VTEC on Honda engines is a stupid idea that loses power.

I've been trying to find some dyno graphs I've seen where lowering to 3800-4100 RPM creates gains. Would also love to see personal dyno graphs.

If anyone's got em, please show them! Thanks

deepbluejh

Here is one: https://www.s2ki.com/s2000/topic/857...#entry20547139

LostMotion

You can't just lower it without making other changes, but with some exhaust work your gain will be about 14 ft-lbs of TQ.

https://www.s2ki.com/forums/index.php?showtopic=509369

Luis06s2k

What up bro... I got some But theyre only of me stock and then w/ the Flashpro Toda calibration... The vtec doesnt engage that low w/ that pre set calibration from Hondata tho.


I can post pics later when i get home.

LostMotion

I thought of this and noticed the above poster beat me to it, but here is the graph.

http://www.hondata.com/reflash_s2k_toda_header.html

Note, you do need exhaust changes.

Moddiction

On an all stock setup won't gain much or anything and likely lose some depending on how low you go. Test pipe usually allows for benefits while lowering vtec and other exhaust changes.

H22toF20

You place VTEC where ever it should be. This could be above or below the factory setting, but it's usually lower.

deepbluejh

Why would it ever be above?

H22toF20

Really depends on your mods. Some cams like higher VTEC cross-overs; on the b and h series.

LagunaAzul

Here are the dyno charts of mine. The only catch is that it was done in two different dynos, but according to the owner of the second dyno, his Dyno is pretty consistent with the Dynojet where i had my car the first time.


Dyno 1: Dynojet @ TDC Auto, Spartanburg, SC
Date: February 16, 2011 (Cold Weather)
Mods: Tanabe Medalion Touring Exhaust, Flashpro Stock Tuned Calibration Loaded with VTEC point set to 5300 RPM.



Dyno 2; Dynocom at Jap Auto. Greenville, SC
Date: June 6, 2011 (Hot Weather)
Mods: Tanabe Medalion Touring Exhaust. Invidia Test Pipe, K&N FIPK intake, Flashpro TODA Calibration loaded with VTE point set to 4100 RPM



As you can see, the diference is pretty substantial if you lower VTEC with the right supporting mods.
I still have to do a proper tune, but so far I have been satisfied with teh results and driveability of the car.

Thanks.