What settings for S15 injectors / Power FC?

[SJN]

Anyone with a Power FC and S15 injectors?

What settings do you have ? I don't know what to set because i'm not sure how big they are. What works for you?

[GraySilvia]

You take the original (stock) injector size, and divide it by the new injector size (S15 injectors are 480cc/min) and multiply the answer by 100, and you have a percent correction factor that you use in the injector setup menu. (370/480)*100=77.1% This should be what you use and it should run like stock! Jeez, I wish those instuctions were in english!!!

[SJN]

Thanks. But shoulden't you set delay/lag time or something like that also ?

The power Fc shows Injectors 1-6 ? Do you change them all? I was pretty sure I only had 4 (just installed the FC)

[GraySilvia]

I just changed the four of them, but, i'm new to FC'ing as well. I have my dead time set at zero right now, but i've got MSD 72# injectors, which are slower to respond than the S15 injectors, so therefore they need less dead time. I messed around with it, setting it at like .6ms and it made my car drive like sh#t. I'm not sure how to calculate what dead time you need, but it's dependent on your injector size, and actually, i'm not sure how important dead time is anyway...

[SJN]

Thanks.. Or so

Played around some last night. But I can't get it to run good. It messitates on sudden acceleration and generly slow response.

Setting the injectors at 82% and drop the temporery fuel map to around 0.800 made it run better, but not perfect.

Feals like it's running lean. But I get very low exhaust temp, som I'm not sure. I will try to check the fuel pressure also.

I also got a maximum injector time at 94 % :/

[GraySilvia]

Yeah, i'm getting a silly number for injector duty too. Guess it just goes back to not having english instructions!!! Maybe if i harass Apexi they'll email me a copy or tell me where i can get a english manual

Say, on a slightly thread-jacking note, do you have problems with the commander saving settings when you change them?? I'll go in and change the injector correction factor a percent or two, but when i turn the car off and back on, it doesn't save the settings! Do you have to manually save them somehow or is something messed up?

[SJN]

Hello!

I guess you have the english RX-7 manual atleast? It's avalible if you dont.

Yes. I haved trouble at first with not saving settings. But if you turn ignition on, change the settings and press back and then turn ignition off, the changes stays.

I played with it last night. I sat the injectors to 0.75. And then I used the "temp" settings for fuel at 0.845 . After that the car run much better. No hessitation. Probably a little ritch still. Coz I only get 800 C exhaust temp and O2 sensor shows 0.90 Volt.

But thoose settings should be for bigger injectors than my 480 I think.. Must check it out some more..

// Stefan [http://200sx.timekiller.net]

[GraySilvia]

Awesome, there's an english instuction manual you can print off the Apexi website. It's for a civic/GS-R, but, should still help me out greatly.

[SJN]

Ehh. That manual is for installing the box only. Not very useful.

You can get the Rx7 manual from my homepage:

http://200sx.timekiller.net/fi...l.pdf

// Stefan