AEM fuel/ignition controller
#27
Senior Member
Thread Starter
Join Date: 07-15-06
Location: Pocomoke City, MD
Posts: 3,765
Likes: 0
Received 0 Likes
on
0 Posts
There are 2 types of connections the FIC uses. One is an interception of the signal wire. The other is a tap of the signal wire.
I will also shorten up some of this for you since ive done all the research already. (i can only help with 06 and 05 2.2's) 07 wiring schematics are not out yet and there is that secondary air injector thing that i no nothing about.
05 and 06 cobalts have a Mag crank sensor. 05 does not have a cam position sensor. Not quite sure about the 06.
The crank connection will be an intersept of the signal. What that means is you will cut the wire (factory wiring harness) near where you are going to mount the FIC. Prefurably near the ECM. The ECM is by the driver head light behind the plastic shield. The input side of the FIC will connect to the sensor side of the wire and the Out put wires of the FIC will connect to the ECM side of the wire. This allows you to retard your timing for boosted aplications. AEM did not enable the feature to advance timing for natural asperations applications becuase the FIC is ment to be a piggy back not a full blown computer
The same type of connection is used for the injectors. use the pin out found on this website to intersept the wires near the ECM. The FIC takes the factory signal for the pulsewidth and sends it out to the injectors un modified. It needs to be modified when you install larger injectors. Since the FIC controls pulsewidth, you can use larger injectors eliminating the use of the 5th injector, al though the FIC has the ability to use a 5th and 6th injector.
the O2 connection needs to go to bank 1 of the schematics which is the 02 sensor closest to the motor. this signal is only tapped. (with my particular set up im not taping this signal because im going to use a stand alone wide band sensor and hooking the AEM fic up to that. mainly becasue if you want to tap the factory sensor you need to solder inline with the sensor signal wire a 1K 1/4W resistor to keep it from doing that LED light show affect on the FIC.)
yeah i probably should do a how to on this. ill do that tomorrow when i have time. right now i have to get back to work.
any more questions let me know and ill try my best to answer them
#29
Senior Member
Thread Starter
Join Date: 07-15-06
Location: Pocomoke City, MD
Posts: 3,765
Likes: 0
Received 0 Likes
on
0 Posts
I have created the how to. now we just have to wait for it to get approved. IF it will. here is basicly what i put in it
(put a few amplifying instructions here that you will have to wait till its posted to view) (lol cant let you have all the info with out being in suspence)
link to the schematics i have posted on another site
http://forum.aempower.com/forum/inde...c,21376.0.html
The FIC is hard wired to the car. You would have to un wire it and re splice the wires back together if you are wanting to take the car back to stock. Wiring up the FIC VOIDS the cars warranty. Do not install this if you intend to keep the car under warrenty.
Once you hook the FIC up the car will run like it did before you installed it, if you get all the wires connected to the right places.
there are instructions that come with it on how to hook it. but i will sum it up for you.
There are 2 types of connections the FIC uses. One is an interception of the signal wire. The other is a tap of the signal wire.
I will also shorten up some of this for you since ive done all the research already. (i can only help with 06 and 05 2.2's) 07 wiring schematics are not out yet and there is that secondary air injector thing that i no nothing about.
05 and 06 cobalts have a Mag crank sensor. 05 does not have a cam position sensor. Not quite sure about the 06.
The crank connection will be an intersept of the signal. What that means is you will cut the wire (factory wiring harness) near where you are going to mount the FIC. Prefurably near the ECM. The ECM is by the driver head light behind the plastic shield. The input side of the FIC will connect to the sensor side of the wire and the Out put wires of the FIC will connect to the ECM side of the wire. This allows you to retard your timing for boosted applications. AEM did not enable the feature to advance timing for natural asperated applications because the FIC is ment to be a piggy back not a full blown computer
The same type of connection is used for the injectors. use the pin out found on this website to intercept the wires near the ECM (FIC injector input is connected to the ECM side of the wire, the FIC injector output wire is connected to the injector side of the wire). The FIC takes the factory signal for the pulse width and sends it out to the injectors un modified. It needs to be modified when you install larger injectors. Since the FIC controls pulse width, you can use larger injectors eliminating the use of the 5th injector, al though the FIC has the ability to use a 5th and 6th injector.
the O2 connection needs to go to bank 1 of the schematics which is the 02 sensor closest to the motor. this signal is only taped. (with my particular set up im not taping this signal because im going to use a stand alone wide band sensor and hooking the AEM fic up to that. mainly becasue if you want to tap the factory sensor you need to solder inline with the sensor signal wire a 1K 1/4W resistor to keep it from doing that LED light show affect on the FIC.)
The MAF is an intercept connection. The FIC input wire is connected to the MAF sensor side of the wire. The FIC output wire is connected to the ECM side of the wire. This is done so that you can clamp the MAF at its max voltage, explained further in this how to in the tuning part. (clamping means that the FIC will keep the ECM from seeing the higher metered air voltage and prevent a CEL)
You will also need to do the same thing as the MAF but for the MAP sensor. This will be connected to one of the Auxilary wires. (this is done to clamp the MAP so the ECM doesn’t see the higher manifold pressure. This is done because the FIC has its own MAP and that’s what is used to tune the engine. Also helps to prevent a CEL)
I also need to add that once you have this hooked up you will need to take the car for a test run. under normal stop and go driving like a good little driver and then on to the interstate to hard acceleration to 55mph or what ever your highway speed limit is. data log all that info. then look at what you logged to see what the max MAF voltage was and enter that in as your clamp voltage value. you will have to hook up the factory MAP sensor to one of the auxilary signals/wires on the FIC. this will allow you to to clamp the factory MAP so that the factory computer wont see the extra pressure in the manifold (if you are going to turbocharge the car that is). then use the FIC's MAP to adjust your fuel curve. if you can get a hold of a OBDII scaning tool you can moniter the fuel curve the factory computer is using. while tuning the FIC try to keep the scanning values you are getting at 0. a positive number means you need to add fuel and a negative number means you need to remove fuel (refering to the scanned fuel curve value being read from the OBDII tool)
Keep the AFR as close to 14:1 as possible. i havent seen what our computers put out for an AFR when you stomp on it (yet). But when you find out that number try to keep that WOT AFR value as close to the stock value as possible (this isn’t good for getting the MOST power available by tuning to 14:1, but it will help to keep you from throwing a CEL)
If anyone is wanting to swap out for larger injectors that require splicing pig tails. ZZP.com has a wiring harness that is already pre spliced but, yes there is a but lol, you will have to RE-PIN the connector. It is pinned for the LSJ. I just used the wiring diagrams and re pinned the connector to plug and play with the 2.2L injector harness
I hope this helps with what everyone was looking for on this. I would also like to add that the FIC’s MAP does a lot of the hardest work of the tuning process.
I had also created a converter/calculator in windows excel that converts lb injectors to CC rating and then calculates a formula that produces the negative number that you need to enter if you are upgrading to larger injectors and have the car run as if it had factory size injectors in. Send me a PM if you want these files and ill send them to your email.
(put a few amplifying instructions here that you will have to wait till its posted to view) (lol cant let you have all the info with out being in suspence)
link to the schematics i have posted on another site
http://forum.aempower.com/forum/inde...c,21376.0.html
The FIC is hard wired to the car. You would have to un wire it and re splice the wires back together if you are wanting to take the car back to stock. Wiring up the FIC VOIDS the cars warranty. Do not install this if you intend to keep the car under warrenty.
Once you hook the FIC up the car will run like it did before you installed it, if you get all the wires connected to the right places.
there are instructions that come with it on how to hook it. but i will sum it up for you.
There are 2 types of connections the FIC uses. One is an interception of the signal wire. The other is a tap of the signal wire.
I will also shorten up some of this for you since ive done all the research already. (i can only help with 06 and 05 2.2's) 07 wiring schematics are not out yet and there is that secondary air injector thing that i no nothing about.
05 and 06 cobalts have a Mag crank sensor. 05 does not have a cam position sensor. Not quite sure about the 06.
The crank connection will be an intersept of the signal. What that means is you will cut the wire (factory wiring harness) near where you are going to mount the FIC. Prefurably near the ECM. The ECM is by the driver head light behind the plastic shield. The input side of the FIC will connect to the sensor side of the wire and the Out put wires of the FIC will connect to the ECM side of the wire. This allows you to retard your timing for boosted applications. AEM did not enable the feature to advance timing for natural asperated applications because the FIC is ment to be a piggy back not a full blown computer
The same type of connection is used for the injectors. use the pin out found on this website to intercept the wires near the ECM (FIC injector input is connected to the ECM side of the wire, the FIC injector output wire is connected to the injector side of the wire). The FIC takes the factory signal for the pulse width and sends it out to the injectors un modified. It needs to be modified when you install larger injectors. Since the FIC controls pulse width, you can use larger injectors eliminating the use of the 5th injector, al though the FIC has the ability to use a 5th and 6th injector.
the O2 connection needs to go to bank 1 of the schematics which is the 02 sensor closest to the motor. this signal is only taped. (with my particular set up im not taping this signal because im going to use a stand alone wide band sensor and hooking the AEM fic up to that. mainly becasue if you want to tap the factory sensor you need to solder inline with the sensor signal wire a 1K 1/4W resistor to keep it from doing that LED light show affect on the FIC.)
The MAF is an intercept connection. The FIC input wire is connected to the MAF sensor side of the wire. The FIC output wire is connected to the ECM side of the wire. This is done so that you can clamp the MAF at its max voltage, explained further in this how to in the tuning part. (clamping means that the FIC will keep the ECM from seeing the higher metered air voltage and prevent a CEL)
You will also need to do the same thing as the MAF but for the MAP sensor. This will be connected to one of the Auxilary wires. (this is done to clamp the MAP so the ECM doesn’t see the higher manifold pressure. This is done because the FIC has its own MAP and that’s what is used to tune the engine. Also helps to prevent a CEL)
I also need to add that once you have this hooked up you will need to take the car for a test run. under normal stop and go driving like a good little driver and then on to the interstate to hard acceleration to 55mph or what ever your highway speed limit is. data log all that info. then look at what you logged to see what the max MAF voltage was and enter that in as your clamp voltage value. you will have to hook up the factory MAP sensor to one of the auxilary signals/wires on the FIC. this will allow you to to clamp the factory MAP so that the factory computer wont see the extra pressure in the manifold (if you are going to turbocharge the car that is). then use the FIC's MAP to adjust your fuel curve. if you can get a hold of a OBDII scaning tool you can moniter the fuel curve the factory computer is using. while tuning the FIC try to keep the scanning values you are getting at 0. a positive number means you need to add fuel and a negative number means you need to remove fuel (refering to the scanned fuel curve value being read from the OBDII tool)
Keep the AFR as close to 14:1 as possible. i havent seen what our computers put out for an AFR when you stomp on it (yet). But when you find out that number try to keep that WOT AFR value as close to the stock value as possible (this isn’t good for getting the MOST power available by tuning to 14:1, but it will help to keep you from throwing a CEL)
If anyone is wanting to swap out for larger injectors that require splicing pig tails. ZZP.com has a wiring harness that is already pre spliced but, yes there is a but lol, you will have to RE-PIN the connector. It is pinned for the LSJ. I just used the wiring diagrams and re pinned the connector to plug and play with the 2.2L injector harness
I hope this helps with what everyone was looking for on this. I would also like to add that the FIC’s MAP does a lot of the hardest work of the tuning process.
I had also created a converter/calculator in windows excel that converts lb injectors to CC rating and then calculates a formula that produces the negative number that you need to enter if you are upgrading to larger injectors and have the car run as if it had factory size injectors in. Send me a PM if you want these files and ill send them to your email.
#30
Senior Member
Join Date: 03-03-06
Location: Pittsburgh, PA
Posts: 4,958
Likes: 0
Received 0 Likes
on
0 Posts
The MAF is an intercept connection. The FIC input wire is connected to the MAF sensor side of the wire. The FIC output wire is connected to the ECM side of the wire. This is done so that you can clamp the MAF at its max voltage, explained further in this how to in the tuning part. (clamping means that the FIC will keep the ECM from seeing the higher metered air voltage and prevent a CEL)
Also, are you seeing a fuel delay while the manifold is in boost?
#31
Senior Member
Thread Starter
Join Date: 07-15-06
Location: Pocomoke City, MD
Posts: 3,765
Likes: 0
Received 0 Likes
on
0 Posts
sorry, i dont remember that info and i dont have any of my tunes on board the ship. will have to wait till i get back from deployment. but i do believe the max voltage i logged was 4.6X cant remember what the last digit was but that is pretty accurate.
i didnt clamp the MAF till after i did a WOT run under normal asperation (to log the max voltage) to keep the ECM from seeing the increase in metered air passing over the MAF and throwing a CEL after i started tuning for boost
alright guys. im going to head to bed now. its 0300 where im at. night all. and im sure ill catch up with you guys tomorrow
i didnt clamp the MAF till after i did a WOT run under normal asperation (to log the max voltage) to keep the ECM from seeing the increase in metered air passing over the MAF and throwing a CEL after i started tuning for boost
alright guys. im going to head to bed now. its 0300 where im at. night all. and im sure ill catch up with you guys tomorrow
Last edited by xCobalt05x; 01-12-2008 at 08:02 PM. Reason: Automerged Doublepost
#33
Senior Member
#34
Senior Member
Thread Starter
Join Date: 07-15-06
Location: Pocomoke City, MD
Posts: 3,765
Likes: 0
Received 0 Likes
on
0 Posts
#35
Senior Member
Join Date: 08-20-07
Location: Irwin, Pa (S of Pittsburgh)
Posts: 2,061
Likes: 0
Received 0 Likes
on
0 Posts
#36
Senior Member
Thread Starter
Join Date: 07-15-06
Location: Pocomoke City, MD
Posts: 3,765
Likes: 0
Received 0 Likes
on
0 Posts
new software for FIC
http://forum.aempower.com/forum/inde...c,20726.0.html
instructions and manuals
http://forum.aempower.com/forum/inde...oard,90.0.html
http://forum.aempower.com/forum/inde...c,20726.0.html
instructions and manuals
http://forum.aempower.com/forum/inde...oard,90.0.html
#41
Senior Member
Thread Starter
Join Date: 07-15-06
Location: Pocomoke City, MD
Posts: 3,765
Likes: 0
Received 0 Likes
on
0 Posts
its going to be a little while still. I come back to the states in march and will be picking up all my stuff from my parents house. I'll probably be back in michigan again some time in june (august most def for woodward). I'll be able to let you all check it out then
#43
Senior Member
Thread Starter
Join Date: 07-15-06
Location: Pocomoke City, MD
Posts: 3,765
Likes: 0
Received 0 Likes
on
0 Posts
#47
Senior Member
Join Date: 09-25-06
Location: USAG Stuttgart, GER
Posts: 1,860
Likes: 0
Received 0 Likes
on
0 Posts
#49
Senior Member
Thread Starter
Join Date: 07-15-06
Location: Pocomoke City, MD
Posts: 3,765
Likes: 0
Received 0 Likes
on
0 Posts
no, the AEM EMU will, but its A LOT more expensive then the f/ic. AEM made the f/ic for people that just wanted to tune the fuel curve and not have to spend a lot on their stand alone computer. if the f/ic did that then it would be identical to their stand alone computer system, well from their point of view anyway