Yesterday I went down to Dyno Demon in Wirral to try out their Dyno Dynamics rollers, I have been told these are the "daddys" when it comes to rolling roads

Here are the results.

(click pictures to make them bigger)





Air Temp was 14 degrees.
Intake Temp was 22 degrees. (measured at the filter)
~16% Drivetrain loss.

Engine mods are Berk decat, Buddy Club dual exhaust and K&N FIPK.

The power at the wheels was what I expected, the power at the fly seems a bit low though from what other graphs i've seen. They calculate the drivetrain losses at this place not run them down so it's supposed to be more accurate

One other thing I noticed is the AFR is a bit lean in a few places, is that normal with light engine mods?

Thanks
Rick

 

I would have expected a a few more bhp at the wheels ...... over 190 at least.

You can ignore the flywheel figures, these are a bit of a guess.

 

I did think that it might have got a few more but i've never seen another S2000 on the rollers so I've no idea really.

I'm going to change the plugs and clean a few sensors up incase they are dirty and try again when I get chance.

 

Your AFR is very odd. It should be a fair bit smoother and dropping to very rich at max rpm.

There is an 8 degree c differential temp on ambient versus intake, which on these dyno's can screw the results up. Alan from WRC tech was explaining to me how the maximum they allow is 5 deg c otherwise they dont count the result as genuine.

I would ask why they only took it to 8000 rpm though

 

Any ideas why the AFR is like that MB?

I went with the 200sx lot and their intake temps were quite a bit higher than mine so I guess it must be ok?

I know I wanted to hear 9000rpm

I'll post the video up later

 

did you have top fuel and correct tyre pressures?

 

32psi on RE050's and a fresh tank of V Power (99ron) just hours before.

I changed the oil about 1000 miles ago as well.

 

mine did 181 whp on dyno dynamics, at stage ^ in the staes a few weeks back, i did not think it was too bad for 125k motor

mase said it was not to bad considering age etc, he said its normaly around the 187 mark, but check out the florida forum they have just had a dyno day and there are a few results on there, some low and some very high, scroll through pages and some of the results are there

https://www.s2ki.com/forums/index.php?showtopic=530645

 

Strange curve doesnt look too bad, better than what mine was!. Im going to get a second hand VAFC2 and help install and tune that with a fella i know.

I went on a dyno about 2 week ago, the guy said it reads slightly less than other dyno's. But of course some dyno's read differently than others.

If its a yank dyno then expect 200 @ wheel stock

I got:

190.8 @ the wheels

236 IIRC at the fly

MY car has done 111k miles

 

Phil, yanks always seem to get more don't they so I don't tend to trust their figures too much, some of them did get some good results though!

Mines only done 25k maybe i'll get more power as I do more miles