well I can positively say that the F/IC and my Comptech ESM did NOT like each other. I have removed it and am going to hook the F/IC back up and lock the MAP voltage with that.

I even put the stock injectors back in so I can run the F/IC with zero'd maps first to get it accustomed to my ECU.

 

Interesting, logic would tell me that with just being a map clamp to hide voltage that it wouldnt matter where the source is comming from, only that it is clamped, there is allot of factors at play with piggybacking, i'm interested to see how this works out for you.

With your stock injectors back in and running transperent settings on the FIC, is your car actually running transperent/stock or are you getting some hickups or strange effects/coloring?

 

I agree with your logic, Chris. Since one is clamping the voltage the other should just ignore it and move on.

What's worse is, after removing the F/IC I thought I would just try it back out the way I had it with the ESM in there, no dice. When I measured the voltage at the MAP wire down at the ECM it would show approx. 4.76 volts. When I hooked up the ESM and measured that same wire (with the key in the "on" position) I was only seeing 1.2-1.6v. WAAAAAY less. And the opposite end of that wire (which goes up to the MAP sensor) showed .6v. That explained my p0107 code for a low MAP circuit input voltage.

After removing the ESM she purred like stock. No hiccups, misfires, CELs, etc. I was tired and cranky last night so I called it a night after this and will continue this evening.

 

I'm not tracking with you entirely here on what this conclusion is, but thats ok, keep us posted on your new progress as you make it.

 

So does this mean I can not get away with just pulling out the FIC and using the comptech ESM?

 

You can run stock with the ESM in place no problem. Is this what your asking?

Just FYI which may or may not be related, there is a "bi pass" harness that comes with the fic that you can plug in so you dont have to remove the unit to get transperent running.

 

Kyushin,

you can use the ESM. Mine, however, decided to flake out on me and no longer work. Lucky me?

I do like that bypass plug that comes w/ the F/IC. That is convenient.

I got some news from a tuner that did some F/IC tuning but mostly standalone stuff. He says that I might actually be able to run the 440cc injectors on my stock ECU! It would obviously be very rich but not to the point where it would flood and barely run. I don't think I am going to try it though. haha

I am going to do a fresh load of the firmwre in the F/IC tonight, hook it back up with the PnP harness and use a 0'ed out map with a voltage clamp on the MAP sensor. Since I have the Comptech FMU installed I should actually be able to drive this just as I did before.

I will keep you posted...

 

Awesome, lemme know if the reflash does anything, I was curious about the 4-5k rpm hiccup wether it was due to me still having the ESM installed or it was the FIC itself. I am still running stock injectors and the comptech fpr. I read the reflash changed the TPS to a voltage instead of a %... im not sure if this will make a difference or not, and can I reflash, or would this erase my current tune?

 

^^^ didnt know you were running the fpr still, to me that would be a varriable that I would not want in the mix, in order to tune /calibrate the fic properly, you have to have a steady/fixed fuel source for it to work from. Its rising rate, stock is not. Also you would need to make sure your idle presure is 43psi stock adjusted on the fpr or you will not know what % to offset on the fic, I dont even know how that would work with the rising rate, some fancy unessisary math I guess if it could work right at all. I take that back, once you get into boost/rising rate on fpr, your in open loop operation and you should be able to tune around this no problem, but there may be some overlap in that transition and that could be why you are experiencing a hickup at 4-5k

Did you tune the fic or did you have someone else do it?

 

I had Mike @ Autowave in huntington beach do the tune.