BoostedTC1

hello I'm new to the Scion tC and the way the ECU works. To make a long story short, I bought an AEM FIC and I'm debating returning it and getting a haltech stand alone. I would prefer keeping the fic since I already have it and it cost considerably less. However, some tuners I've talked to say that it gives CEL problems.
I see people on here running the AEM FIC. Anyone running it with success and no CEL problems? if so, what did you do to it to be trouble free? So far on mine I have loaded the basemap from the dezod page and changed the injector size to 550. Let me know, I'm installing a custom kit in a week and want to get the tc running right. Thanks in advance.

That_Kid_Ju

The "infamous" CEL that the FIC gives is the cam/crank sensor. You need to do the resistor mod (or buy a boomslang harness) in order to not get a CEL from those. You may still get a CEL, but it may or may not be FIC related. Standalones are much better, but it eliminates the ECU altogether (and the OBD port). If your state does OBD-II inspections, you will not pass with a standalone. You may pass with the FIC. There are pros and cons to both routes. It all depends on your personal preference and goals.

burgandybomber

iTrader: (1)

I have CELs for a few things but no infamous cam/crank code. I have a code that says I'm too rich and another that says cylinder one missfire lol. NOT RELATED IN THE LEAST BIT TO THE FIC. On another note the fic sucks at adjusting for any weather changes. Maybe its because I'm running an older software version, but 20-30 degrees will change the tune. Maybe it's barometric pressure its reacting to... Either way its annoying and I don't know how to tune YET! Get the big boy ecu. Sitting here with E85 at every pump wishing I had.

BoostedTC1

I did the resistor mod yesterday. Thanks for the responses.

That_Kid_Ju

FIC is good for changes in weather, so long as your tune is good. O2 sensor skewing function allows for that. If you tuned without the primary O2, then you'd have an issue with changing weather.