EFIDynoTuning Forum

X2P vs P3M - Both 5.0L Thunderbird/Cougar.. P3M is late 1993 only from all the info I have gathered.

X2P is common GSALI, P3M is it's own SMD-501 hardware type P3MA strategy. It is also a Pilot EEC-V box, but 56k EEC-IV structure.

STKR has a VERY mildly broken out template, SCT/Derive even less.

I have broken out the P3MA up to my ability and verified it works, BUT..... Both STKR and SCT both have the HISL and ALOSL swapped.

When comparing to GSALI X2P, this is inaccurate. GSALI IS 19.476 lbs/hr HIGH and 20.808 lbs/hr LOW. MAF is 36 lbs/min up top, AND P3MA are those exact numbers when mathed out correctly... We know that..

This damn P3MA box is showing swapped hi/low, and 80 lbs/min up top on the MAF in both STKR and SCT. My gut tells me based on binary that THEY are wrong. However, if someone that disassembles more that I do could verify this, that would be great.

Those are both attached. Thanks

Also noted this: to line up P3MA with GSALI -- P3MA is E000 and 0000 offset. GSALI is common E000 - 2000


***MAKE +1504 OFFSET TO SIMILARIZE GSALI ON SOME OF THE SPARK. +14F0 FOR MAF LINEUP, +1500 FOR FUEL INJECTOR AND FIRING ORDER, BAROMETRIC AND ADAPTIVES, +14F8 FOR SARCHG, +147E FOR FUEL TABLES, +1552 FOR RANDOM SHIT LIKE MAX AND MIN MAF VOLTAGE, +1550 FOR MIL, 14FE FOR REV LIMITS AND TP VOLTAGE***

MAF xfer is at xA570 in P3M.

What's the clock frequency for the 8065 in P3M?

jsa wrote: ↑2025 Dec 18, 06:00 MAF xfer is at xA570 in P3M.

What's the clock frequency for the 8065 in P3M?

MAF xfer is at xA570 in P3M. Yup, I know

What's the clock frequency for the 8065 in P3M? Have no clue. Cannot find it.

Post up the DIR with what you know in it.

What's written on the oscillator inside the EEC box?

iirc sailorbob did some work on p3m at one time maybe

jsa wrote: ↑2025 Dec 18, 14:28 Post up the DIR with what you know in it.

What's written on the oscillator inside the EEC box?

Will do. I'll pull it out today. Just buttoned up the car its in.

Thanks

In the P3M code AHISL is before ALOSL.

I have 8C08 for AHISL and 8C0A for ALOSL at 0000 offset. When you read it out in Burn2/Moates like you would address a normal 56k, it lines up with a bin size of E000 and 0000. Offset on the XDF. For burning TI chips, 40000 bin size and +22000 offset for 256k.

Looks to be 18 mHz.

Yes, 18MHz so ~36lb/min maf max.