Apexi Neo Afc install help...obd 1
#1
Apexi Neo Afc install help...obd 1
trying to install an apexi neo afc. i have the following diagrams and i just want to make sure im doing this right according to these diagrams any help would be greatly appreciated. im pretty sure the 92-95 sc300 and sc400s have karmen type mafs (im driving a 95 auto) (i read this in a thread created by carfreak70 he was putting in a safc 2 https://www.clublexus.com/forums/per...ion-sc300.html ). anyways heres the diagrams and how i think the wires go, if there right let me know if not just go ahead and correct me lol...any help will be appreciated. ( i know inthe install guide from apexi it says use t8b, but from what i read its wrong)
heres the karman diagram from apexi for the neo
here are the ecu pinouts that i was able to acquire from searching.
heres how they go i believe, if not please correct so i dont blow anything up will be attempting this tommorow.
red------------------ig power -------------- pin 31
red and white--------ig power -------------- pin 31
green ---------------rpm--------------------pin 58
gray-----------------throttle signal----------pin 43
brown----------------ground
black-----------------ground
brown and white-----karmen signal output--- pin 66 towards ecu
black and white------karmen signal input-----pin 66 away from ecu
orange --------------illumination power------ any interior lighting source???
thanks CL
-David
heres the karman diagram from apexi for the neo
here are the ecu pinouts that i was able to acquire from searching.
heres how they go i believe, if not please correct so i dont blow anything up will be attempting this tommorow.
red------------------ig power -------------- pin 31
red and white--------ig power -------------- pin 31
green ---------------rpm--------------------pin 58
gray-----------------throttle signal----------pin 43
brown----------------ground
black-----------------ground
brown and white-----karmen signal output--- pin 66 towards ecu
black and white------karmen signal input-----pin 66 away from ecu
orange --------------illumination power------ any interior lighting source???
thanks CL
-David
#5
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Hey, thats how I started out. Trust me you wont be disappointed one bit. As for the ecu being self-learning, not too sure about that being odb-1. My ecu responded just fine to my afc controller, only issue I had was the bov venting to atmosphere, car would go pig rich and stall, but I did manage to "tune" that out.
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A car is in open loop when the ecu does NOT receive any feedback information. In this case, when the ecu does not make adjustments based on the O2 sensors.
The only time the car runs on open loop mode is usually on first start-up and the o2 sensors are still cold, or during hard throttle when closed loop feedback isn't fast enough to do any compensation.
The main reason a lot of people say these air fuel controllers don't work is because they're using it the wrong way. They WONT work on low throttle where the O2 sensors are actively telling the ecu what the "output" of the engine is like. At this point the engine auto-corrections anything you did. But they work VERY well when the O2 sensors aren't contributing. (Such as in hard-throttle)
Hope I could help.
The only time the car runs on open loop mode is usually on first start-up and the o2 sensors are still cold, or during hard throttle when closed loop feedback isn't fast enough to do any compensation.
The main reason a lot of people say these air fuel controllers don't work is because they're using it the wrong way. They WONT work on low throttle where the O2 sensors are actively telling the ecu what the "output" of the engine is like. At this point the engine auto-corrections anything you did. But they work VERY well when the O2 sensors aren't contributing. (Such as in hard-throttle)
Hope I could help.
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Ok so from what I'm understanding from this all, is that its most beneficial at higher RPM's and after the car is warmed up...
scviolence, what kind of performance enhancements are you looking to achieve? have you heard/ seen proof of numbers increase? I had a AFC, and sold it due to the lack of solid claims.
Any better gas mileage at least?? LOL
Good luck with the install, if nothing else at least it'll look cool...=P
scviolence, what kind of performance enhancements are you looking to achieve? have you heard/ seen proof of numbers increase? I had a AFC, and sold it due to the lack of solid claims.
Any better gas mileage at least?? LOL
Good luck with the install, if nothing else at least it'll look cool...=P