if you don't have the comptech FPR and you didnt upgrade your injectors then you have no way to get the fuel required for that kind of power. Your injectors are probably maxed out.

 

Here are my dyno plots...







Deathsled- That's the conclusion that I have come to, but I was under the impression that if I could run the greddy emanage ultimate, I would be able to not run the comptech esm and the comptech fpr...?? And yes, my tuner said he maxed out the injectors at the very end, even though he is known for never going above 80% duty...

Driftnby- I'm still on a stock clutch, but it was not slipping until around 8600ish rpms, so I did not think that was the problem.

Tyraid2k- LOL, my bad, typo, 149.2ftlb torque

 

The af ratio looks ok, however i dont see the typical vtec surge @ 5800ish . Still though it should have made more . I see that youre power level stopped climbing @ 8300 ... not typical for a vortech/comptech charger . I recall when i first dynoed my newly installed vortech that the vtec was not operating due to a faulty black box, however i was able to make 265ish at the wheels . Once i fixed this problem the power jumped to over 308 whp . My graph shows the power kept increasing the higher i revved . I bet you have a leak or a loose belt . Heres my graph and im not trying to rub it in .

 

Ok, well I'm sure it's not a faulty black box, since I do not have one on the car, the emanage should be taking care of that.

I also noticed the lack of the power surge where vtec should be engaging.
Is there a way to find out if vtec is in fact engaging?

If you look at the boost graph, it does not look like I have any leaks.

And I will check later to see if there are any loose belts.

 

Are you reading boost from the manifold or the supercharger ? When youre on the dyno you will hear the vtec switchover and feel it too . However i doubt that youre loosing 60 - 70 whp from the vtec not working . Youre torque was falling off after 7500 rpm.... did you take alot of timing out with the emanage ???

 

I believe the boost was taken from the manifold. And I am honestly not sure about what my tuner did with the timing. And I agree I'm sure there was not a 60-70 hp loss from no vtec...

 

If the boost is there then it has to be a tuning issue ( or a beat engine ). Ask youre tuner if and how much timing was taken out . Timing should be very near to stock at that boost level . Vtec not working will have a large effect on power production id say around 40 whp . That would put you around 265 - 270 at the tire . Still a little low but nothing to sneeze at .

 

with the EMU you don't need the comptech ESM, as you can set a map clamp voltage using the EMU. But you definitely need to upgrade the fuel pump and either put in larger injectors or use the comptech FPR so that you can deliver more fuel than the stock injectors can.

Right now I would be afraid to drive your car and build boost, as you're likely to run lean and fry your engine. I'm surprised your tuner was working on the car like this. Either they must have little to no experience with the s2000, or they aren't a very good tuner period.

 

So the consensus is that I need to put the comptech FPR on the car, and continue using the EmanUlt as a voltage clamp obviously.

Thanks for the help guys.

 

Wait a second. The normal ESM controls timing and acts as a map clamp and uses teh FPR to push more pressure so that when the injectors open there is more fuel coming out.

I was under the impression that if you use a larger fuel pump and an EMU that can control the injector duty directly, that you don't need the FPR b/c you can accurately meter more fuel.

The injector can only flow so much fuel whether the pressure is higher or not, the nozzle is only so big, so I don't see how it can make a difference whether the pressure is higher vs the injector metering the correct amount of fuel.