Dyno chart - Mugen ECU header and exhaust
08-24-2004, 02:34 PM
#1
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Dyno chart - Mugen ECU header and exhaust
Also Mugen thermostat, rad cap, and fan switch. Hondata gasket also.
6/19/04 Daytona Beach
Environmental Conditions per Weather Underground.com
Air temp 95
6/19/04 Daytona Beach
Environmental Conditions per Weather Underground.com
Air temp 95
08-24-2004, 02:51 PM
#3
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Not terribly impressive, but it would be better if we could compare it w/ some of the stock S2000s that ran that day (same dyno, same environmental conditions). I expect that the heat is zapping some of your power.
It's interesting that even w/ the Mugen ECU you are running 12:1 AFRs above 7500RPMs. Does the Mugen ECU compensate that much for the air temps? I would still expect to see it run leaner than that.
It's interesting that even w/ the Mugen ECU you are running 12:1 AFRs above 7500RPMs. Does the Mugen ECU compensate that much for the air temps? I would still expect to see it run leaner than that.
08-24-2004, 06:43 PM
#5
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unfortunately no baseline or stock S2000. The other S2000 that dyno'd right after mine (see video) was a Monte Carlo Blue CT SC'd with Amuse dual, hondata and running super lean. It pulled around 270rwhp.
I plan to go back in cooler weather (with no changes to the car) to test my hypothesis that the dyno software's correction factors are not sufficient to account for the effect of hot weather. I know that the car feels substantially stronger during the winter.
The dyno was brand new at the time - don't know if that had any effect. I did put in some 100 octane go-juice, but only enough to have about a 50/50 mix with the 93 octane premium. But I only ran the car approximately 25 miles with that mixture in so the ECU may not have learned that it doesn't need to be so conservative with timing.
Of course the other possibility is that the Mugen stuff and other mods don't have any benefit, but the way my car feels, I doubt that's the case.
Thanks for everyone's input.
I plan to go back in cooler weather (with no changes to the car) to test my hypothesis that the dyno software's correction factors are not sufficient to account for the effect of hot weather. I know that the car feels substantially stronger during the winter.
The dyno was brand new at the time - don't know if that had any effect. I did put in some 100 octane go-juice, but only enough to have about a 50/50 mix with the 93 octane premium. But I only ran the car approximately 25 miles with that mixture in so the ECU may not have learned that it doesn't need to be so conservative with timing.
Of course the other possibility is that the Mugen stuff and other mods don't have any benefit, but the way my car feels, I doubt that's the case.
Thanks for everyone's input.
08-24-2004, 10:27 PM
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So the mods were...
AEM V2 CAI
Mugen ECU
Mugen Header
Mugen exhaust
T1R test pipe
Mugen cooling mods
Hondata Gasket
Hmm. The torque curve is very flat with a brief spike at 3500 rpms and the midrange looks very smoothed-out. I expected the AF to be a bit leaner though. I'm not familiar with the gains using a Mugen exhaust as I know weight-loss is the benefit but is there any HP gains using it?
We have 1 owner here that mixes enough 100 octane to our premium 92 octane gas to yield roughly 93. Could it be that there was too much octane used?
AEM V2 CAI
Mugen ECU
Mugen Header
Mugen exhaust
T1R test pipe
Mugen cooling mods
Hondata Gasket
Hmm. The torque curve is very flat with a brief spike at 3500 rpms and the midrange looks very smoothed-out. I expected the AF to be a bit leaner though. I'm not familiar with the gains using a Mugen exhaust as I know weight-loss is the benefit but is there any HP gains using it?
We have 1 owner here that mixes enough 100 octane to our premium 92 octane gas to yield roughly 93. Could it be that there was too much octane used?
08-25-2004, 07:57 AM
#7
Originally Posted by Hyper-X,Aug 24 2004, 10:27 PM
Could it be that there was too much octane used?
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08-25-2004, 07:25 PM
#10
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^^^ but it sounds so good and makes oil changes so easy 
Maybe I need to clean/check my filter, though. It's been almost a year and there's a lot of beach sand drifting around where I live. Also, RR, since you have quite a bit of oil-related knowledge, does the fact that I had the oil changed a few hours before dyno-ing have any possible effect? The stealership did it so who knows what they used. (I know, I know, but the car was in for the axle creak fix so I had them do the oil change also)
btw, the ECU is the exact same one that was in the car that UL dyno'd a few years ago in Cali. It peaked at over 220 rwhp. The thread is here:
https://www.s2ki.com/forums/index.php?showt...=72881&hl=mugen
Sideways - do you happen to have your dyno chart handy. I thought I saw it here some time ago, but can't find it now.
I'll update this thread for sure after a winter-time run - no other mods.
Maybe I need to clean/check my filter, though. It's been almost a year and there's a lot of beach sand drifting around where I live. Also, RR, since you have quite a bit of oil-related knowledge, does the fact that I had the oil changed a few hours before dyno-ing have any possible effect? The stealership did it so who knows what they used. (I know, I know, but the car was in for the axle creak fix so I had them do the oil change also)
btw, the ECU is the exact same one that was in the car that UL dyno'd a few years ago in Cali. It peaked at over 220 rwhp. The thread is here:
https://www.s2ki.com/forums/index.php?showt...=72881&hl=mugen
Sideways - do you happen to have your dyno chart handy. I thought I saw it here some time ago, but can't find it now.
I'll update this thread for sure after a winter-time run - no other mods.