Tuning options for Dodge Mopar

[mekkis]

Yeah, if they sued people then you'd have folks linking to actual court dates and case numbers. I'm sure they have zero interest in private parties reversing cars that are under warranty - save for the cases of large tuning houses that approach the OEM directly to purchase their white papers with clear intent and marketable motives - but anywhere from the moment the car goes off OEM warranty to 7-8 years old they really stop caring.

Moving on.

Today we are sick in bed with the laptop, poking at an xdf I lightheartedly call "97JTEC.xdf" based off of the previously posted 97 BT 5.2 Regulated MT 04852983AA.bin‎. Expect this to be abandoned quickly, as I have other obligations that occupy me 8 days a week, other reversals that are actually vehicles I own (none of it on hand, at the moment), and the attention span of a goldfish. What were we talking about?


CHECKSUM

0x002102 (perform 8 bit checksum on all the 97 binaries - do you see what I see?)



FUEL

Primary fuel map: 0x002B82 has the 8 bit value for # of rows (RPM). 0x11 = 17 rows. 0x002B83 has the 8 bit value for # of columns (MAP). 0x09 = 9 columns. The fuel map begins at 0x002B86, 16 bit values, (X*4)/1000 renders it to mSec pulsewidth. Actual row/column scalars are located somewhere else, I can't find them right off.

Fuel map, with EGR on: row/column scalars at 0x002CB8/0x002CB9, fuel map begins at 0x002CC.

Part throttle enrichment table: 0x002E4F/0x002E50 scalars, map begins 0x002E53. Additive to base fuel tables when not in PE mode.

PE multiplier, 2D table at 0x002F12. 8 bit values, for the even address location each value converted to decimal - (X*31.875) results in the RPM headings, for the odd addresses the 8 bit value converted to decimal (1+[X/256]) results in the multiplier. So, the first string of 13 20 3F 20 results in ~ 600 rpm 1.125 mult 2000 rpm 1.125 mult. You guessed it - 17 values long.

Injector minimum pulsewidth ~0x002B79, or a value or two after that. Going off the top of my head, can't find where I commented that.