twinturboed motor with just eprom data mods?
If someone had and there is a post, I must be terrible at searching.
My car is twinturboed(from NA) 95 JDM MT, and has brand new stock TT fuel pump.
So I don't have dual speed fan wire(and fan itself perhaps), and TT fuel pump controller and wires for it.(I've heard that it has one more wire like dual speed fan for dual speed fuel pump operation)
With Ash's Zemulator, I drove my car without any problem besides rough idle and heavy knock sometime that I couldn't pin out why.
After I *ucked up my Zemulator by drowning it, and being ignored by Ash, I've digged a bit and kinda thought found my way to burn eprom with Willem Eprom Programmer.
To refer blessing [ www.ztechz.net, ] I modded stock JDM TT eprom code for my 740cc injectors and burned it and started the motor.
I used 8 bit JDM NA automatic ECU for getting socketed guinea pig.
Symptom is like this,
- About 11.1 to 1 AFR at idle(here in term of idle means about 1500 rpm at cold and going down to 500 rpm and up to 1400 rpm consistently at warm).
- About 17.5 to 1 AFR at normal cruising.(like 1800 rpm in fourth gear in flat road)
- I get bucking if I step throttle further to get a bit of acceleration from cruising.
- While stopping still, I can manage AFR to 14.7 : 1 with 2800 rpm maintaining throttling. It looks like I can control AFR from 11.1 : 1 to 17.5:1(or worse) with my throttle stepping foot. Linearly moves with rpm or throttle(maybe TP value is just going that way).
- I can't rev upper than 3200 rpm. I can hear the bucking noise when free reving. Any successful adoptation story link(or your story) of NA ECU to twinturboed one like mine? I'm currently suspecting fuel pump control system which I cannot find any from [ www.ztechz.net. ]
I've saw Ash said about jumper changing and twinturbo fuel control circuit thing somewhere this forum while searching. Gossips also welcomed.
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