Thanks! I'm actually getting ready for another:help: although it won't be the ez30 yet...
I got the AEM FIC 6 on Wednesday, wired it in Friday morning, and spent all weekend tuning it. As far as the FIC6 goes, LOVE IT! At first I thought I was getting the 'subaru crank signal noise' due to missing at higher load and/or rpms, but it turned out I'm not very good at guessing a base tune when I've never tuned before. Weird, right?
Anyway, I started out trying to adjust the injectors output table to control fuel, but didn't get anything that was consistently smooth and driveable. I did a buttload of research on everything from Subarus to Chevys, MAF to MAP, OBD1/2... tons of reading for every type of setup.
Now I'm using the MAF table to dial back the signal to the ecu. Basically the same thing my potentiometer did, but this is obviously more versatile and precise. Fueling is cherry, running around pre boost AFR's are in the 14:1 area, and boost is about 12.75ish tapering to 12:1. :banana:
Next up was ignition. I used the 'create base ignition map' feature to take out 1 degree of timing per pound of boost... WAAAY to much retard. She was missing like crazy even at low boost. I have to run stock timing all the way up to 10psi, THEN start pulling it back, in very small increments.
Then there's the Injector Response Time, which I had to drop way down to keep from going crazy rich under boost and full throttle. The FIC6 also has a neat acceleration feature, that temporarily adds fuel for sudden throttle increases. Settings can be confusing and include:
Sensitivity [amount of throttle change required to trigger]
Fuel [% amount to increase fuel PER 'Sensitivity']
Limit [maximum % amount of fuel that can be added]
Time [delay after throttle increase before additional fuel tapers to zero]
So finally, Sunday night I managed to dial in a solid tune with great drive-ability and no missing or detonation, and promptly obliterate my turbo oil seal by being a dumbass and trying to block the pressure from my catch can. I plugged the breather for like a second, and smoke started billowing out of a leak between my turbo and downpipe. Now when I get into boost, my car creates this amazing smokescreen, and I can make daring escapes! And shut down the road....
I think my 'tuning' process just about killed my car anyway, the pressure coming out of my breathers and crank vent is unreal. Must've been those shitty felt gaskets :drunk: