Tuned Car Yesterday
Based only on our experinece, you cannot run the ESM and another tuning apparatus simultaneously. We used the lowly VAFC-II and got a decent number, A/F ratio, and smoothed out the VTEC transition. We used regular copper plugs gapped to .032." We also used the Comptech provided FPR and fuel pump.
On the dyno it worked fine. Took it on the street and it after a few hundred feet of partial throttle, CEL showed itself. Took it back to the shop... loose wires. Reconnected, reset ECU, and went back out. Seemed better. Took it on the freeway- bat out of hell! Took the 20mph offramp at speed and she bogged for a second and threw another CEL.
We didn't solder the connections- no time as it was 1 am when we left the shop the day before Fall Colors. Had a slight mishap at speed at the track, thus no further development with the VAFC(have the AEM EMS- not installed yet and may be some time).
On the dyno it worked fine. Took it on the street and it after a few hundred feet of partial throttle, CEL showed itself. Took it back to the shop... loose wires. Reconnected, reset ECU, and went back out. Seemed better. Took it on the freeway- bat out of hell! Took the 20mph offramp at speed and she bogged for a second and threw another CEL.

We didn't solder the connections- no time as it was 1 am when we left the shop the day before Fall Colors. Had a slight mishap at speed at the track, thus no further development with the VAFC(have the AEM EMS- not installed yet and may be some time).
Originally Posted by FF2Skip,Nov 3 2004, 04:56 PM
We also used the Comptech provided FPR and fuel pump.
You're using half of one solution and half of another. You either use the Comptech FPR, stock injectors and ESM or E-manage, 1:1 FPR and bigger injectors.
The E-manage has a boost hide function so you don't need the ESM. And if you have the ESM upstream of the E-manage then you are hiding boost from it and hence it can't do it's job.
The Comptech FPR has adjustable static pressure but it's ramp is not adjustable and as you are using larger injectors and the E-manage you don't need the FPR to add fuel with boost.
The E-manage has a boost hide function so you don't need the ESM. And if you have the ESM upstream of the E-manage then you are hiding boost from it and hence it can't do it's job.
The Comptech FPR has adjustable static pressure but it's ramp is not adjustable and as you are using larger injectors and the E-manage you don't need the FPR to add fuel with boost.
Originally Posted by xviper,Nov 3 2004, 12:29 PM
It's with the OEM gap that the spark will blow out. 0.028" may be good for other blown cars, but might not work well for an S.
i been running .030 w/ my vortech setup and never had plugs foul. they come out clean everytime i check 'em. Then again it all depends on the tune of the car...
Originally Posted by Venomous S,Nov 3 2004, 10:00 PM
Then again it all depends on the tune of the car...
I drive my car through winter's ice and snow. There are a vast majority of S2000 owners who will not or cannot. It's like me asking, "How is it much different for me to drive this car in the snow/ice from everyone else? I've been doing it for 5 winters now and never have I had a problem. I have always come out of it unscathed. But then, I guess it depends on the tune of the driver."
There IS a difference. He won't know until he tries.
I'm buying a 1:1 FPR. This will hopefully help. My tuner does not want to uninstall the ESM right now until I am ready to tune the car. He's concerned that it will adversly effect the A/F maps since the car was tuned with both the ESM and the E-manage together.
Have since regapped the plugs and reset the ECU but I keep getting a CEL for running to rich. My car now bogs at low RPM but over 4,500 and you get pushed back into the seat. Pain in the ass for city stoplight driving.
How many of you are running with the Greddy pressure sensor?
All help is very much appreciated.
Thanks
Have since regapped the plugs and reset the ECU but I keep getting a CEL for running to rich. My car now bogs at low RPM but over 4,500 and you get pushed back into the seat. Pain in the ass for city stoplight driving.
How many of you are running with the Greddy pressure sensor?
All help is very much appreciated.
Thanks








