Infinity ecu

[Chris@Rvengeperformance]

Just bought the aem cas disk for the nissan 240 its 50mm diameter has 24 outer teeth and one inner cam tooth . But its fits our cas perfectly . So now i just gotta decide what route i wanna go with for wiring the aem infinity


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Very cool!

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[sluti85]

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[Chris@Rvengeperformance]

yah for OEM stat sync speeds!

[kywhitelightning]

Very interested in how this plays out.

Jeff

[sluti85]

One thing i havent asked for ideas on is a way to keep my a/c operable . I know the ac control unit sends 12 v to ecu then ecu grounds the clutch relay if all parameters required are met . Seems simple but not sure if i could just put i switchable ground to clutch relay . For instance will it still cycle properly without the control unit not having a input to ecu n so on ? Any help is appreciated . Ive studied the a/c schematics for hours n it seems there is some missing info in the elec diagrams


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[sluti85]

Also on another subject . I bought chrome ecu few years back so i could tune and keep my ac factory but i got the chrome ecu n my ac clutch wouldnt turn on unless i manually operated relay. Sent ecu back to adam he said it worked fine for him n sent back to me . Which it still wouldnt work for me so i put stock ecu in and ac works flawlessly . So i kept using chrome anyway just no a/c . Then started getting cold n i noticed compressor would kick on if i turned temp setting on dash up above a certain point i think its around 70-75 deg or above the ac operates properlly but i dont need it when cold lol need it to work when on coldest temp setting on dash . And if i swap back to stock ecu a/c operates in all temp settings coldest to hottest . It makes no sense n ive thought this threw many times . Thats why if i cant have my a/c with chrome i might as well get best ecu i can like the infinity . Any ides or suggestions again are greatly appreciated . Thanks in advance !


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[sluti85]

And forgot to say that ive tested the wire from ac unit when tryin to command ac from dash . Stock ecu it gets 12v immediatly from control unit . With chrome the ac control unit wont send its signal to ecu till above that certain temp setting like mentioned above . So what difference is ac unit seeing between ecu's the only wires on ecu i can find for ac are 1 from control unit to ecu n then ecu to clutch relay . So whats the control unit seeing with chrome ecu that it doesnt send the command signal to chrome ecu till temp setting is raised on dash


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[Greg E]

Definitely sounds like a faulty ECU or corroded ECU grounds.

[sluti85]

I sent to adam he said worked fine in his car n sent back to me . Its weird that the ac control unit sees somthin different between ecu's n i cant find useful info in service manuals to see what the ac unit uses to determine when to signal to ecu to activate ac clutch relay. With chrome ecu somthing isnt makin it happy untill temp control is in warm section then ac unit sends signal . its drove me nuts thinkin about it!


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[Chris@Rvengeperformance]

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any luck?