Just came back from having my car "MASE'd" and it is a completely different animal! Much more torque through the mid, more useable power ! Check it out! 210.8bhp!!! Not bad for 130k miles and 10 years! (Oct 1999)



However with just a decat and a single exit exhaust lukemelek made 1 bhp less!
single Exit Exhaust (£600)
decat (£70)

To put you in the picture I have:
Polished ported manifold (£250)
Spoon Throttle body (£280?)
HKS Racing Suction Intake (£341)
Toda exhaust manifold (£760)
decat (£80)
HKS HI Power Exhaust! (£600)

So an insane amount of money...£1500 for 1hp!!!!!

It just brought it home, what a lot of old skoolers said to me or just posted when the left the site...most of the mods out there for the s2000 are either to lose a little weight and to gain what we all love : noise!!

If power is the route you want to take then you have 2 choices :
1.AEM for N/A
2.forced induction

The AEM is very reasonable for the outlay and could even be put on a standard car, I believe the AEM would be excellent on its own.

And then the inevitable : Turbo or super, after speaking to a few people, the turbo seems to offer the most flexible solution...but thats another debate for another post!

Nice to meet some of other guys there! lukemelek, kitkat, phils2k, lucky77 and razzle.

 

Great to see that you got 210.

Your findings tally with my thoughts on the matter. With only an AEM V2 intake and mapped by Mase on 97 Ron my car now produces 204 WHP.

Certainly breathes life into the old dog, especially in the midrange.

 

What is the area like under the curve?

eg You could be having 40whp more than your mate throughout the whole revband and he catches you up and 8400 rpm with a 1hp difference.


I know which car I'd prefer to be driving in.

The top line number is pretty much meaningless.

 

The limiting factor is the mods IMO - the AEM, for NA applications, is overkill as you'll get the same numbers with a VAFC at a fraction of the cost.

 

In one respect yes, but on the other hand no.

If I decide to go FI in the future then I already have the ECU of choice, but if I decide to sell the car I could put the AEM up for sale and pretty much get back the money I paid on it.

For me it is a win win situation.

 

Punch, it will be interesting to see what you get out of the VAFC with your mods.

Gaspode, I can tell you its made a massive difference all the way through the rev range, VTEC is now around 4,9K and pulls stonger than before.

The graph is a before(red) and after(blue) of my car and the lower bars show you the torque that is on offer, power is all well and good, but its torque that gets the job done and as you can see theres around a 10-12% gain.

 

Good shit mate ESP for an old motor

But as Gas says look at the wider picture, I picked up heaps of midrange so your bolt ons do help - I made around 185whp stock, ended up 208.

The old schoolers, well I agree with them to a certain extent but not fully, every car is different and produce slightly different figures, some mods are better in midrange, low down low.

Punchdrunk you won't yield as much with a vafc2 as you with a standalone but it's not far behind. My experience is based on an emerald standalone.

 

I've got to say I find it very interesting as the NA numbers appear to be uniform give or take a couple of bhp here and there. 210rwhp seems to be the most that can be achieved with the AEM regardless of mods.

The question then is where is the mapper getting the power from? is it by reducing the VTEC point, trimming/adding fuel, timing advance/retard or a combination. Based on my reading it would appear that there is little room for timing adjustment on the F20C so my guess is that the vtec and fuel adjustments is what is making the power.

That being the case an investment in the AEM and dyno time should achieve the same results.

 

Power comes from bringing the AFR down, and ajusting timing. I'm running on V Power so there is some scope. Bringing the VTEC down helps too.

I dont' agree that 210 is the limit though, thats just based on the fact most people only have basic breathing mods. Start doing cams and other bits and you can go further.

A VAFC isn't going to do what the AEM will, as all it does is fuelling adjustment. It's a big chunk though.

I also agree with Gaspode, the peak figure shouldn't be the whole focus, having a load more power at 5-6000 is important for in gear acceleration. And the torque too!

 

There is scope for ignition timing but not as much as the AFR. We had the vtec on a westie set at 4200rpm but it was always used on a track