Do you have all your sensors hooked up?
Does it happen when cold/hot?
Tested MAP sensor?
Run diagnostics (if you wired it in) or use a scan tool?
Checked for fouled plugs?
Car - KE70
motor - JDM 4age STD JDM ECU
problem - splutters under load but runs.
occurs/started when - always/since the conversion.
If I unlug the MAP sensor it revs fine just doesn't want to idle at all, stalls almost instantly.
personal situation - Started working on it again since the sun started coming out after the car was hibernating all winter, lol
Please help me and stop me buying a microtech cos I can get one brand new for cheap.
It happens always and all sensors are wired in.
Diagnosics doesn't really work, maybe I should check the wiring for that.
I have tried with two MAP sensors and it does the same thing, also not aware on how to test it, I have no vac pump.
Plugs are fine, it used to do it since they were new and they have been cleaned and its still the same thing.
By testing the MAP sensor i just meant resistances. You have tried 2 so id assume thats not the problem.
Could be a a vac leak, dicky fuel pressure reg, semi blocked fuel filter, TPS incorrect setting.
Basically look for anything that alters air/fuel. Do you get black smoke (rich?)