does anyone make a vtec controller for the s?

 

Pivot make one. It can also correct A/F deviations by +-10%. Check it out at www.the-pivot.co.jp
Then of course, they're the VAFC...

 

does the VAFC lower the VTEC engagement RPM point?

 

I think so. I believe 4IGS2000 is hosting a GB on the VAFC's at the moment.

 

Yes, it can lower the vtec engagement.

 

STTA (Something to think about)
Depending on how this controller will work, you'll need to ensure that extra fuel is added at the same time. hence(VAFC)
If not, it will, will, will run lean, very.

 

ok, I'm starting to sound ignorant here, but uh, what's the diff between running lean and running rich?

 

Assuming you're not joking, I'll give it go.
lean = lower fuel/air ratio
rich = higher fuel/air ratio
But if you're looking for actual numbers, someone else will have to step in.

 

Lean: Not enough fuel which causes the engine to run HOT,
very HOT. This results in burning valves and detonation.
Detonation can cause your engine a lot of harm. FYI,
Detonation is the uncontrolled ignition or pre-ignition of
your fuel mixture.
When your fuel mixture ignites, its like a weather front
starting at the spark plug. If you have pre-ignition(Meaning
something else has caused the fuel mixture to ignite. )
These two or more fronts collide causing an explosion.
Not good. This could easily unseat your piston rings.


Rich:More fuel than needed. This causes the engine to run
cooler, and actually adds lubrication, but with less
power.

 

The S2000 doesn't benefit as much as other VTEC engines by lowering the VTEC engagement point. If you lower the VTEC engagement point by more than 300, you will actually loose power (on an NA setup). I don't think you would have to ADD fuel by lowering the engagement by 300. You just wouldn't REDUCE fuel. I reduced my fuel above and below VTEC engagement, and left it flat at the crossover.