Striped down vx tune

Holden/Delco Tuning. ALDL, OBD 1.5. Circa 1989 to 2004.
User avatar
antus
Site Admin
Posts: 10016
Joined: Sat Feb 28, 2009 10:34 am
cars: TX Gemini 2L Twincam 8psi
TX Gemini SR20 18psi
Datsun 1200 Ute
Subaru Blitzen '06 EZ30 4th gen, 3.0R Spec B
Subaru WRX 2007

Re: Striped down vx tune

Post by antus »

for vats and checksums it is literally a sum. so check which byte gets changed and see by how much when you change the vats flag. Say it increases by 16 (decimal) add the same amount to the checksum and it should still match.
Have you read the FAQ? For lots of information and links to significant threads see here: http://pcmhacking.net/forums/viewtopic.php?f=7&t=1396
Top
pas94
Posts: 52
Joined: Sun Dec 05, 2010 9:22 am

Re: Striped down vx tune

Post by pas94 »

Thanks heaps for that, I'll try to work it out when I get home.
Top

Return to “Holden ALDL ECUs”