7.4 wont rev - need a file check... help

[automasters]

This file is from a 7.4 swapped out of a 98 Chevy 2500 into a 1995 firebird. All wired in with the 98 stock 1998 ECU. I am not using the MAF and the car wont rev , seems to be stuck in some kind limp mode because of the missing MAF, could someone file check this and shoot me a suggestion it really been kicken my bleep

[mattmonaro]

Untick P0102 box in DTC section
That is the MAF trouble code

[automasters]

its set to no error report and no checks for SES is that what your talking about?

[Russ K]

Set the P0102 code to no mil light. There has to be a Maf code set in order to be in SD mode. And since your Maf is removed, I'm surprised the engine even starts.

Russ Kemp

[automasters]

Ok I changed it and P0102 is setting but it still wont hold any rpm it revs but then dies back instantly... any other suggestions?

[Russ K]

Post your tune and a scan log of the car trying to start. What's your fuel pressure?

Russ Kemp

[automasters]

I figured it out, when I change it from manual tans back to auto Trans like it originally came, it revs up. I am not using the 4L80,I went with a old school powerglide trans so I figure I could just put it in manual trans mode to eliminate trans functions. Well in manual mode it wont rev, anyone know why?