Hey, I have an issue with my fuel trims I can not seem to understand. I have EvoScan (.99, 2.0, 2.1 & 2.2), MitsuLogger, and ScanTech. With the Mitsulogger and all of the EvoScans, my fuel trims all read identical: .1008 but with ScanTech they fluctuate and read like fuel trims should. I have tried deleting and reloading EvoScan many times but I can not get them to log correctly. Has anyone ran into this before? If so, what is the issue?

 

bump for some help

 

Try loading the previous ROM Will ... the one before we upgraded to the v.15 ROM for the P300.

EDIT :: To add some info ... this is the car I mentioned the other day in the other thread on fuel trims. The O2 Feedback reacts normally, but all 3 LTFTs stay at 0.

 

Also, do you have a CEL?

 

well, just before loading the new rom to fix the p0300, i stopped getting p0300.

then i went ahead and loaded the new rom and I now get the rear o2 sensor heater circuit, where as I didnt use to. I need to check the MIL again to make sure that is the only one. My laptop battery died a while back and I havent pluged it in yet

 

Let me revisit the ROM and double check the rear O2 ...

 

I think the p0300 was a fluke. I changed plugs, regrounded the coils (made a grounding kit right to the battery and chasis) and relocated the HKS DIL-2 and its ground. I havent had the p0300 in a while.

 

Well, you shouldn't get it on the new ROM. You need to be on the new ROM anyway as it was a Mitsu update to your car, so let's work on it starting there.

 

I will keep the newest rom loaded. I havent made may logs due to changing positions at work. I have cut my driving down by 2/3's or more.