Well I just installed a set of JDM 440cc injectors and everything went good. The only weird thing is that on my low throttle and idle settings on my AFC, I started out with a -15% the car was running lean and crappy, so I zeroed out the afc and now it runs great (14.7). I am running a 10.1 AFR at WOT, which is what was expected so I definitely can take some fuel out in the top end. But my idle and low throttle like it zeroed out. Do you think that this is because the car is in closed loop and the computer is adjusting it to stoich by itself? I checked and their are no vacuum leaks.
Just Installed JDM 440cc Injectors!!
- Thread starter Tim
- Start date
I'm going to have to check again for vacuum leaks, because that is the only thing that would make sense. Although I did not remove the intake plenum, I just removed the throttle body, isc, and throttle linkage, and I used all new O-rings and was very careful putting them in.
I have just fitted 440's to mine too. I have not yet driven the car but i do get a little black smoke when I rev the car. Also have you changed the MAP sensor? I have got a 2jzgte one fitted to mine. This increases the boost to around 17-18psi. Otherwise you are just overfueling the car really.
better question yet, i breifed over this but figure it was not covered, what MAP sensor are you running now? 2J map or 1J map, could posibly be part of the problem your seeing
OneJoeZee said:
Fuelcut at higher boost; ecu sees same voltage but actual boost pressure is higher.
I did this on my old setup. 440cc with a stock ecu and safc. At idle, the ECU can control 440cc's (uses stock o2 sensor). After WOT the ECU ignores the stock sensor and goes by the ECU tune. That's when I had to remove appx. 15% fuel on the HI-throttle. I removed nothing from LO-throttle.
is it really true how if you do the 440 inj upgrade w/ the 2j map that it'll increase the boost/fuel cut?
slidingsidewayz said:
Yes this can be often compared to the 550cc and Lexus AFM upgrade done to the 7MGTE.