I figured that AEM probably wouldn't build something that would be that limiting, if anyone can get that info it would be amazing as this may make the AEM one of the best budget FIC's ever.
AEM F/IC writeup
- Thread starter Ricktalife
- Start date
I figured that AEM probably wouldn't build something that would be that limiting, if anyone can get that info it would be amazing as this may make the AEM one of the best budget FIC's ever.
Ricktalife
Member
- :
- 2012 Subaru WRX
I will be sure to update the first post with any new info I find. I agree that it is an excellent unit for the price, and I think it will perform very well once everything is dialed in. The only real complaint people have with the FIC is that there is no support for our cars. I believe that is an easy hurdle to overcome, and I hope to accomplish that.
justanothermp5
Banned
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- Rust Bucket
thats not what limits the injector size, being able to idle with those injectors would be the limiting factor, if you put in 1500cc injectors and the FIC can only control up to 800cc then your going to be dumping a s*** ton of raw fuel at idle and all throughout the rpm range since it cant cut back the duty cycle enough
thats how i see it anyways
thats how i see it anyways
From what i have fished out, it looks like the FIC can handle 200% larger injectors from stock. Then I see a writeup about an injector size function that allows you to run larger injectors.....although people say its not that accurate. I would like to see what AEM's official word is on this.
Ricktalife
Member
- :
- 2012 Subaru WRX
Yea when you are in the FIC software looking at a fuel map, there is an option to take the entire map and change it by the increase of injector size. Though it clearly states in the instructions not to rely on it and that further tuning is required. To put it another way, if you have a fuel map with every cell reading "-20%" which would close the injectors 20% faster, thus removing fuel... and you use the injector size change function to upgrade from say 330cc to 440cc injectors, then it would alter the entire map to "-25%" to make up for the size change. The numbers I used are purely for example and are not accurate at all.
Ricktalife
Member
- :
- 2012 Subaru WRX
Well I'm not the first to use it, but the only other members I know of that used it are Swirlfx and XoX1de, but they have both moved on to something else. I had some errands to run so I haven't messed with it yet, but I plan to at some point today. I'm tired of no turbo 
Ricktalife
Member
- :
- 2012 Subaru WRX
Well I switched from the bypass to the FIC, and it's giving me the same problem as before. It throws a CEL p0335 I think is the code.. for Crankshaft Position Sensor A Malfunction, and when I go to start it the car will rev up for a second or 2 and then dies. So I plugged the bypass back in and it started normally. I am really confused. It can't be a loose wire, because the bypass would not work either if it was. Guess I'll have to give tech support another call.
- :
- 2003 mazdaspeed protege
subbin
Ricktalife
Member
- :
- 2012 Subaru WRX
Well I did not contact AEM yet, but I was checking over the wiring and diagrams, and my only guess right now is that I must have connected the crank sensor wires backwards. Since the car runs with the bypass, it obviously has a solid connection. But when I plug the FIC in, I get the P0335 so there has to be a mismatched wire or 2.
Whoever created the wiring diagram I found and posted on page 1, completely ****** it up. I strongly advise NOT to use it, and I will work on making a correct diagram once this is all sorted out.
Whoever created the wiring diagram I found and posted on page 1, completely ****** it up. I strongly advise NOT to use it, and I will work on making a correct diagram once this is all sorted out.
Ricktalife
Member
- :
- 2012 Subaru WRX
Well it's been a week and no progress to report sadly... but I promise I have not forgotten about this, especially considering the fact that my car is still torn apart. I may be able to work on it later today if my dad gives me some damn space in our 3 car garage that is somehow always full of HIS cars. But I won't go on about that. Judging by the notes I made in my instruction manual, I have the cam and crank sensors connected as such:
Crank:
CRK Mag1 + to ECU pin #21
CRK Mag1 - to ECU pin #22
CRK Mag0 - to ECU pin #22
CRK Mag0 + to ECU pin #21
Cam:
CAM Mag1 + to ECU pin #85
CAM Mag1 - to ECU pin #86
CAM Mag0 - to ECU pin #86
CAM Mag0 + to ECU pin #85
so I'm going to try and find an ECU diagram that will tell me which pin connector is the + and which is the - since that would easily tell me if I have it connected the right way or not.
Crank:
CRK Mag1 + to ECU pin #21
CRK Mag1 - to ECU pin #22
CRK Mag0 - to ECU pin #22
CRK Mag0 + to ECU pin #21
Cam:
CAM Mag1 + to ECU pin #85
CAM Mag1 - to ECU pin #86
CAM Mag0 - to ECU pin #86
CAM Mag0 + to ECU pin #85
so I'm going to try and find an ECU diagram that will tell me which pin connector is the + and which is the - since that would easily tell me if I have it connected the right way or not.
KrayzieFox
Member
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- 01 MP3 Turbo
I already did that work for you, check the wiring instructions I attached. And as far as I understood you don't attach the MagO- wire on vehicles with magnetic sensors but you're welcome to double check everything. I just went off AEM's instructions you attached and the wiring diagram out of the service manual so I could have made a mistake.
Pages 28-29 (section B2d) in the Wiring section of the service manual with give you the pin designations for the cam and crank sensors.
And FYI, it's MagO and MagI for Output and Input.
Pages 28-29 (section B2d) in the Wiring section of the service manual with give you the pin designations for the cam and crank sensors.
And FYI, it's MagO and MagI for Output and Input.
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I actually have this FIC currently installed in my turbo protege 5. I have no issues with it car runs strong but I do need to re-tune as I'm running really rich. I did not do the install tho. I had the Tunner come by The shop and give me a base tune so I could drive to the dyno. I'll be happy to answer any questions that I would know. And the ones I don't know I could always ask my tuner
Ricktalife
Member
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- 2012 Subaru WRX
Yea I was just going over it in my head so I decided to type everything lol. I did not realize it was an O and I... that makes much more sense to me now THANK YOU! lol...
Damnit where have you been? haha that's great to finally find somebody else still using this on their 3rd gen. Right now I just have to rewire the crank sensor and then I should be ready to go, but keep an eye on this thread cause I would appreciate any input. Oh I was curious about if the shop that installed yours had wired in a resistor for the MAF sensor? I read that it's not the optimal way to tune the car. Did they mention which map they used for fuel?
Give us more, like your set up.
Also....did you install it? what issues did you/have you had with it?
