fuel gauge segment swap 98 pcm

[383camaro]

Ok so I did some searching on here about this and got my fuel gauge to work my car is a 98 trans am with the 411 pcm swap car runs great with my operating system 09381344 now when I do a full flash and change to the 02 Camaro os 12212156 My fuel gauge works but my car barley runs at all I have copy pasted all the parameters which was a pain in the rear but still wont run good with that os loaded in the computer. I keep getting a mass airflow sensor performance problem and when I check the 5 volt reference at it I get 11volts on the plug but its only got 5 volts on the 09381344 os. Is there a way to do the fuel segment swap on my current os?
2156 os tune fuel gauge works.tun
1344 os fuel gauge doesnt work.tun

[Taz]

F0504 looks highly unusual ... have you been using another tuning software in an attempt to get this working ?

[383camaro]

no, I have only been using efi live I found that os 2156 on here while doing a search for the fuel segment swap and the fuel gauge works good with that like that but the engine runs like crap, If I keep the 1344 os my car runs good idles and doesn't act weird but once I change the os to the 2156 it goes crazy but the fuel gauge works from fuel to empty

[Taz]

That's odd .. the "1344" tune you posted also depicts the transmission type as "255". Either that tune is somehow corrupt, yet functional, or the Hex has been altered. Either way, I won't touch it with a ten foot pole.

If you put a stock / unaltered 2000 Camaro OS (09381344) back in the PCM, perhaps I could help with the fuel gage.

[383camaro]

were did you find the transmission type ? im running a turbo 400 so it really doesn't matter about the transmission but ill get you a 2000 Camaro file. But why cant I change my operating system to the 2156 are the pin outs different from one os to another?

[383camaro]

2000 Chevrolet Camaro Coupe Manual LS1 5.7 Litre (9381344).tun

[Taz]

OK ... you can change to 2002 OS 12212156 ... but, you will need to copy over many of the tables from the other tune.

As far "getting me" a 2000 Camaro tune file - I have more than enough of these. My point in post #4 was that I won't alter a tune that has already to been subject to questionable (non-EFILive) changes - it becomes an accident waiting to happen.

[383camaro]

I have only used efi live on this computer nothing else this computer came out of a 2000 s10 so I did a full flash on it to a 2000 manual Camaro os 1344. But if I do a full flash of an 02 Camaro os12212156 os the car runs like crap if at all because like a said my 5 volt reference at the maf goes from 5volts to 11 volts with that 2156 os why I have no clue. after doing the swap I copied over all the tables and this still doesn't help because it makes my maf sensor go crazy. Do the operating systems change the outputs on the ecu?

[383camaro]

but if you can send me a 2000 tune file with the 1344 os with the fuel segment swap I will try it and switch all of my tables into that tune and see if my car will run right

[383camaro]

ok so can anyone find a difference in my tunes from one to the other when i put in the 2156 os my car wont run right and throws maf codes but with the 1344 os it doesnt throw any codes