pcmhacking.net

Hey there, Im new around here so if this is the wrong place to ask sorry in advance.
Iv got a Holden VP V8 in to be re-tuned since its been stroked to a 355 and thought It would just be a easy job of sticking the larger injectors in then adjusting the fuel multiplier until its in the correct area.

Problem im having is identifying what code to use on it since it has had all the stickers removed off the ECU and has a aftermarket chip in it already for the bigger cam.
The Bin off the chip is a COME one looking in the HEX of it but I cant find a XDF that will open it properly, all the values are messed up trying the VP V8 and V6 ones.

And if I burn just a factory VP V8 bin on to the Chip I get a solid CEL. But burning a copy of the COME bin on to one of my chips I have no problem so that rules out my burner or the chip being a problem and the map pulled off the chip must be correct other wise it would CEL.

edit: bin removed


Thanks for any help and sorry again if iv used any weird terms like "fuel multiplyer" since im use to using Nistune, Crome and Links and cant remember what they called it in Tuner pro with Holdens.

Sorry its a C.O.M.E software bin. There is no XDF for it, and I have removed it from your post due to (c) reasons. You would probably be best of starting again with 12p. Its well defined, and has a V8 base you can load and tweak.

http://pcmhacking.net/forums/viewtopic.php?f=27&t=356
The CEL is likely some issue with file size, or having the correct offset on the chip. This looks at a glance like a 16kb file, but some (most) of them are 32kb so you may be missing some. So if you are burning a stock 16kb file to 32kb chip you need to offset the burn by 16kb as the cpu boots from the reset vector at 0xFFFF and the chip is top justified. Obviously 32k to 16kb is a problem.

The offset is correct Hondas and Nissans you have to do the same thing and im using 64KB (512kbit) chips. Im using a Burn2 so it does it automatically. Also confirmed its not burning settings by when I re-burnt that bin and it worked.
Both maps are 16Kb.


Also should of mentioned its Manual.

Thanks for the link ill have a read of that.

Do come have a custom code they have made for themselves?

Yes, several.

Dylan wrote:Do come have a custom code they have made for themselves?

yep, they do make their own cams and have their engine tuned as well.

Sorted,
Just traced the map on my emulator and found the locations I needed to adjust the fuel.
Went from 180kw to 277kw with just fixing the fueling.

Great result, must have been a mile off to begin with for that sort of increase!

Yeah they were.
With factory injectors you could only just get it to run in the 15s+ so no power run was done.
Larger injectors and it was in the 9s and 10s AFR, A power run was done at the customers request which netted 180kw. Adjusted the fuel so it was in 12s under WOT and boom 277kw.