AEM map sensor install help

[SimoNismo]

So I got my car back from a shop that kinda only half installed my engine. I have a aem ems2 ecu, and also a single turbo and a aem 3.5bar map sensor. The problem I'm having right now is that they never installed the harness for the map sensor so A, I need a aem map sensor harness, and B, where do I wire it into? One of the original mafs wiring? And if so which wires are which on the mafs? Any Help would be great please and thanks!

[steveo1502]

Vacume into the sensor, and the sensor should wire into the ecu, nothing to the maf wiring, i just cut mine off.I use a haltech , has an internal map sensor. I'm not too sure about aem but sounds like an external sensor.

[steveo1502]

So they installed the engine? Is it running?

[SimoNismo]

Yeah, they installed it, wired it to make it just barely run, half of the vacuum lines just have a bolt in em. I'm in the process of making sure all the wiring is done right (which we can see it isn't), and figure out what all those vacuum lines with bolts in em do and route them properly. Thanks for in the info Think I could attempt to run a single maf just to get the car to run a bit better for the time being?

[steveo1502]

AEM map sensor install help

It should have either the maf or map , sometimes people run both, I'm surprised it even starts with neither.... Why single maf?

[steveo1502]

I had to order a cable from haltech to hook up my wideband, I bought just the ecu, it sucked , 200 bucks for a few wires , maybe u need the same from aem

Dosnt the aem u a specific cas plate or something? Hopefully that's in lol

[steveo1502]

This have single turbo? Or still stock twins? Half my vacume lines have bolts in em too lol, once u remove a few things there's a lot left over,

[steveo1502]

Nm, I just read your signature, you need an adaptor for two mafs into the one pipe, I wouldn't mess with that though, figure out the map , it's a far better method for tuning

[SimoNismo]

Yeah for sure I'm going with the map, I just need the harness. The place that installed it sold the chassis the engine I bought came out of.....and sold it with the wiring harness for the map sensor which I cant seem to find (I was hoping a part source or napa would have the same harness but I don't seem to be having any luck). I think I might have to order it from AEM, unless the gm map sensors have the same harness? Until I can find that harness I'm going to try out the mafs, one to start, just to attempt to get it running better, then if it works and I still don't have the map sensor harness I'll try 2 mafs lol.

[steveo1502]

I tried googling this lol, and I did read somewhere about it being wired into the original maf wiring... Seems wierd but it sure would make it easy... I really have no idea about the aem

You should be trying to return this to stock lol... It's a Nismo man , there's a set of Nismo turbos for sale on here somewhere, or maybe on the gtrc Facebook page, id look into that if I was u

[nimblestix]

Okay, ems v2 with the aem 3.5bar is a 2 wire sensor, iirc you will need to wire it into the front maf at the ecu. Look up the aem 6620 installation instructions. Its detailed there which pins you need to wire to. Really simple once you have a look. I'll check my manual to see if I can clarify for you.

Also! Important as many beneficial updates were made, be sure to flash the new firmware to your ecu and update to aem tuner 3.2 to take advantage of built in o2 failsafe along with other great features.

sent from a galaxy far, far away

[nimblestix]

here you go.








hope that helps.

[nimblestix]

ah the res is crap.

map sensor wires: RED - pin 48 (5v power)
GREEN - pin 35 (signal)
BLACK - pin 30 (ground)

AIT sensor wires: 1 wire to pin 36 (AIT)
1 wire to pin 30 (ground)

AEM uego : o2 #1 white wire 0-5v analog. pin 29
sensor ground brown wire pin 30
switched 12v+ pink wire
12v+ power (5amp fuse) red wire
batter or chassis ground black wire