AEM Ultimate Resource Thread>>>>

[scotty66]

iv just got my aem and am having real problems with it, its got gauge w/b, 5 bar map sensor and ait. it was all fine on stock system but soon as i changed to pte 780cc injectors it would not start, if i keep cranking it dose fire but dies all most straight away and plugs are black as if really rich. on the fuel table i entered the injectors as change from 360cc at 45psi to 780cc at 45psi, it then asks me to select battery offset from the list but there are no options to choose from i have to go to menus and do it manually, and in battery off set i am using fic 850cc as from info off aem forum said there closest to pte 780cc.
iv also tried putting them as 1000cc as suggested on aem board to lower fueling but nothing is working, i even tried new plugs yesterday but still nothing. anybody with pte 780cc what did you do to get round this problem?

if itll help i can send a copy of my cal for anyone to look at in case ive done something stupid. or if someone who has 780cc can email me one to chrisscott666@hotmail.com so i can compare it to mine.

a important note is im using cal 1.19. could this be the problem? iv read its not 100% yet. but worked fine on stock injectors.

injectors are second hand so haven't been tested. that will be my next step.

any help greatly appreciated as were pretty new to the aem over here in the uk

chris

[HumanVr4]

OK i just got my AEM EMS in the mail, also I now have someone to help me tune it. Now on for the fun stuff, how do I install it I know the AEM EMS is just plug and play. but how do I wire up the AEM 3.5 bar map sensor, AEM IAT sensor and the AEM wideband.

AEM wideband, I took my Stillen down pipe off, and had the bung (I don't know if that is the right word for it or not) welded in to my downpipe about 2 inches after it joins to one pipe. I know the plug on the sensor goes to the gauge. Their is another plug that goes to the gauge and it has 4 wires off it. The red wire is power, i think i am going to connect this to the radio power with a 10amp inline fuse, so it comes on when the car is on or in acc mode. next is the black wire which is a ground. next is a white wire 0-5v output, (Analog output) Connects to any auxiliary unit that accepts a 0-5 volt input. i do not know where to connect this wire to. The last wire is a Blue one, which is a Serial Output that connects to a rs-232 com port for hyper-terminal data logging. i do not know where this wire goes as well

Now on to the AEM 3.5 bar map sensor. it only has 3 wires going from it red, green and black.
i think all you have to do, is cut the plug on the stock map sensor and wire the new plug up to it. i think i know where the stock map sensor is. is it right behind the TB and has a plug on it. with the wire colors green with a yellow strip, white with a red strip and a black wire. which wire goes to what on the AEM 3.5 bar map sensor. also where do i put the AEM 3.5 bar map sensor at?
do i just T-off a Vacc line?

Now the AEM IAT. The AEM IAT only has 2 black wires on it. on goes to pin 6 black wire, ground. And the outer one goes to pin 7 red/blue stripe, signal of the stock MAF connector. Do i cut the wire on pin 6 and 7 and connect them to the AEM IAT, or do i just splice into them. does it matter what wire goes to what on the AEM IAT because both of them are black. i am running a stock y-pipe, which i am just going to drill a hole in and put the AEM IAT in it, about 3 inch away from the TB will this work OK?


i know this is a long post, but i did search i got to page 30 and just quit. but it is also 4:20 in the morning and i need some sleep

[scotty66]

right just been out today and had a play with the soft wear and the bloody thing started i tried reducing the injector to 550cc and it went i then changed back to 780cc and it starts ok. i think because its warm now so maybe i need to add fuel to the warm up enrichment table. but it wont tick over soon as i let off the accelerator it dies. now i did play with the idle screw when i was trying to get it going before so thought that might be the problem, but using it has no real affect and it still stalls.


im thinking im so close now at least it'll run. which is 100% better than it was. just need the idle to be ok and i can dial everything in. it seems to rev ok but is misfiring and the exhaust is quietly popping a bit but seems pretty stable, just the idle issue. i wonder if there is a problem with my idel stepper motor?



edit i now think its coz i haven't adjusted mt fuel and timing map for my map sensor. it explains the symptoms I'm experiencing, i.e there's not enough fuel for it to idle.

[SHiVeR-91VR4]

Originally Posted by FWombat

If you want to break in using the EMS, your best bet is to find someone else's map who's using the same injectors that you are, and the same MAP/MAF. The fuel and spark curves don't need to be perfect; just close. Make sure you turn off O2 feedback.

You only need to run wastegate boost to break in the motor, which gives you more margin for error in the tune before you have knock problems. Really, the tune doesn't have to be perfect, just close enough so that you're not stumbling rich or stumbling lean. The important thing is to get WOT pulls, and engine braking coastdowns to seat the rings.

- Brian

Sounds good, my wastegate boost is going to be 15psi, so it's going to get fast quick.

Do you have any notes or procedures for break in? I thought I was supposed to let the engine idle for 5 mins first then change the oil immediately etc and then start to break it in etc.

I haven't searched yet on the proper procedure, but it seems like you know what you're talking about so if you have any advise I would be very greatful.

[BAdAzZV8]

Originally Posted by HumanVr4

but how do I wire up the AEM 3.5 bar map sensor, AEM IAT sensor and the AEM wideband.

AEM wideband, I took my Stillen down pipe off, and had the bung (I don't know if that is the right word for it or not) welded in to my downpipe about 2 inches after it joins to one pipe. I know the plug on the sensor goes to the gauge. Their is another plug that goes to the gauge and it has 4 wires off it. The red wire is power, i think i am going to connect this to the radio power with a 10amp inline fuse, so it comes on when the car is on or in acc mode. next is the black wire which is a ground. next is a white wire 0-5v output, (Analog output) Connects to any auxiliary unit that accepts a 0-5 volt input. i do not know where to connect this wire to. The last wire is a Blue one, which is a Serial Output that connects to a rs-232 com port for hyper-terminal data logging. i do not know where this wire goes as well

Now on to the AEM 3.5 bar map sensor. it only has 3 wires going from it red, green and black.
i think all you have to do, is cut the plug on the stock map sensor and wire the new plug up to it. i think i know where the stock map sensor is. is it right behind the TB and has a plug on it. with the wire colors green with a yellow strip, white with a red strip and a black wire. which wire goes to what on the AEM 3.5 bar map sensor. also where do i put the AEM 3.5 bar map sensor at?
do i just T-off a Vacc line?

Now the AEM IAT. The AEM IAT only has 2 black wires on it. on goes to pin 6 black wire, ground. And the outer one goes to pin 7 red/blue stripe, signal of the stock MAF connector. Do i cut the wire on pin 6 and 7 and connect them to the AEM IAT, or do i just splice into them. does it matter what wire goes to what on the AEM IAT because both of them are black. i am running a stock y-pipe, which i am just going to drill a hole in and put the AEM IAT in it, about 3 inch away from the TB will this work OK?


i know this is a long post, but i did search i got to page 30 and just quit. but it is also 4:20 in the morning and i need some sleep

http://forum.aempower.com/bbs/viewtopic.php?t=9418

http://forum.aempower.com/bbs/viewto...&highlight=ait

http://mjannusch.home.comcast.net/aemfaq/index.htm

[FWombat]

Originally Posted by SHiVeR-91VR4

Sounds good, my wastegate boost is going to be 15psi, so it's going to get fast quick.

Do you have any notes or procedures for break in? I thought I was supposed to let the engine idle for 5 mins first then change the oil immediately etc and then start to break it in etc.

I haven't searched yet on the proper procedure, but it seems like you know what you're talking about so if you have any advise I would be very greatful.

Here's a good thread we had with lots of discussion: engine breakin

There are basically two schools of thought on the subject. One says to really baby it for a few thousand miles. The other is to get the engine warm, and then get load on the rings (WOT pulls and engine braking) as soon as possible to seat the rings. You'll have to do some reading and decide which you find more convincing.

- Brian

[HumanVr4]

Originally Posted by BAdAzZV8

http://forum.aempower.com/bbs/viewtopic.php?t=9418

http://forum.aempower.com/bbs/viewto...&highlight=ait

http://mjannusch.home.comcast.net/aemfaq/index.htm

thanks, but i still need more help. i know how to do the AIT sensor.
now for the AEM Map sensor, the A/black wire t'd into the black tps wire (ground). B/red wire goes to the ECU EGR pin for your model year (53 or 73)
so does that mean i need to run a wire from the motor bay into the car?
C/green wire can be t'd into the green/yellow stripe tps wire (+5v). now what vaccum line should i connect the AEM MAP sensor to?


AEM wideband is my next problem their is a white wire 0-5v output, (Analog output) Connects to any auxiliary unit that accepts a 0-5 volt input. i do not know where to connect this wire to. The last wire is a Blue one, which is a Serial Output that connects to a rs-232 com port for hyper-terminal data logging. i do not know where this wire goes as well

[BAdAzZV8]

Yes, from the MAP sensor in the engine bay into the ECU

Connect the MAP to the vac line off of your intake manifold

[Antwan3000]

[quote=BlackStealth]
QUOTE]

i can plainly see that the vacuum line from the back of the y-pipe goes to the one side of the GM solenoid.. where is the other vacuum line coming from?..

is it a "T" of the wastgate vacuum lines and the rear turbo intake vacuum line (the vacuum line the attached to the small nipple on the back of the rear turbo intake pipe)?..

[Darkangel101010]

There is an input and an output, output has to go to turbos. So to answer your question, you are correct there is a T down there