• Hello Guest, welcome to the initial stages of our new platform!
    You can find some additional information about where we are in the process of migrating the board and setting up our new software here

    Thank you for being a part of our community!

LH2.4 Chips making your own?? Can it be that difficult?

2

240brick89

New member
Joined
Jun 20, 2019
HI fellow Brickers & Brickettes, I have Gone down the rabbit hole of wanting to make my own Chips as it is a bit of a lost art for these cars now, I appreciate it would be easier to go standalone but the whole idea of this project for me is to use LH 2.4 as I have it left over from another project which is now MS & would be kinda fun to start doing my own tuning, so here goes...

The Car is a 1990 740 GLT B234f+T, spec .... 465cc Green Giants, Garret Turbo equivalent in size to a 16T, 016 MAF in 3inch housing, stock intake, stock cams.
10:1 compression ratio, currently running on chippable 208 EZK & 977 fuel ECU with some old chips I had laying around (Probably not suitable for this setup).

I Have tunerpro/tunerRT downloaded & I am Able to open Bin files & XDFs in there, using the existing volvo LH ones on tunerpro downloads.
I Have an Xgecu Tl866ii Programmer & finally managed to get some software (Xg pro) to use with it for reading & burning chips. Although trying to read some old custom chips to get the files has been unsuccessfull.
& I've grabbed a load of blank 27c256 Eproms
I don't have anything like an ostrich yet for real time tuning with tunerproRT. I thought I'd just burn a few chips as they're relatively cheap & Keep an eye on the wideband.
My question is How do you change the injector size in tuner pro, a little research has lead me to believe you can't key in the injector size as such, It's needs to be done in the VE Table & calculated by using some kind of formular based on the original injector size for that bin.
My next question is what do you do inside the MAF table to allow for the larger 3" MAF, I have read something about using the MAF table from the
LH 950 ( b204gt) ecu but I'm unsuccessful in finding a bin file & XDF to get into this.
I have a rough understanding of how volumetric efficiency works & once I'm going I'm pretty sure I'll be able to tweak the VE table until I'm happy with the AFRs.
If anyone could share any bin files & XDF'S That would be great as tunerpro is missing some & any further advice would be amazing.
Thanks
 
about injector scaling i think it is just tweaking constant 1 with the lambda flag off. Constant 3 will move the calculated load around (and thus ignition timing), which I don't think you want.

The 016 in a 3" tube i'm not sure how to account for that. But for a real 012 MAF you would copy and paste the MAF table from the 950 bin into your bin.

That being said I wouldn't try to do this blind. (meaning without a tracing emulator). you will have no idea where in the mapping the engine is currently accessing to make changes. It does not behave super logically like an aftermarket/speed density system and the axis' in the XDFs are pretty inaccurate.
 
By the way I see you said you have an 977 ecu and a chip reader. Could you upload the 977 fuel ecu bin? It's one of the ones I/we haven't seen I don't think.
 
950 bin and tunerpro xdf.. And IPDowns LH24 editor.. As far as advise for burning chips, if you can't read a chip you probably won't be able to burn one but who knows? Those 27c256 chips usually take 12 volts to read and then 20 volts or so to program. Hard to suck 20 volts out of a 5 volt USB port but what do I know... I use old Willem burners with external power supplies and parallel (printer) port hook up to old windows XP puter.. I actually have a few different ones versions, they all work, but I leave this 6.0 version one setup for LH 2.4 chips works great for that. Might seem harder to use but once you set the jumpers for the chip your reading or burning works great.

www.ebay.com

*NEW* PCB6.0E KEE Willem EPROM Programmer Ship from USA! FREE DB25 & USB cables | eBay

This board has many enhanced features. DB25 cable for connecting to PC printer port;. EPROM (read/verify/Progam). eprom PIC12C509JW, PIC16C505JW, PIC16C711JW, PIC16CE625JW. EPROM 16bit (DIP40) (1-4Mbit).
www.ebay.com
 

Attachments

Last edited:
Great info all of the above, & thankyou for sharing the 950 files that should get things cooking nicely.
I like the look of that programmer aswell looks way better than my what I'm using atm.
I'll play around with things a bit more this week & also see if I can get the file off the stock 977 chip, I'll post the file in the thread when I update progress.
Cheers
 
esmth said:
By the way I see you said you have an 977 ecu and a chip reader. Could you upload the 977 fuel ecu bin? It's one of the ones I/we haven't seen I don't think.
Click to expand...
Hi ive attached the 977 fuel bin above, I am now successfully reading chips stock & custom. I am trying to burn a bin file which is looking successful on screen. the file was sent to me for the fuel ecu as I bought custom chips for my setup from someone & the car wouldn't start so they sent the bin to me [the EZK chip was fine] I have burnt two chips but unfortunately the car still will not start, so I've gone down the route of making a clone of an old chip which used to run my car to see if it's a fault with the burning or the tune itself. I am still yet to put in the car to test it.
I will post up shortly the fuel tables & AMM tables from my custom map
 
Pietercc said:
Most chips you can get your hands on are 100% non erasable sadly. If someone has a good source of erasable ones I want some
Click to expand...
Wut I buy the UV erasable Eproms on ebay by the 100's... Not sure what your drinking, but I'll have sum!

www.ebay.com

100pcs M27C256B-10F1 EPROM IC M27C256B ST DIP-32 | eBay

M27C256B-10F1 EPROM IC M27C256B ST. 2,China mainland and Hongkong will not be send to. Australia/New Zealand 7 -12d West Asia/Middle East 7-12d. United Kingdom 7 -12d Italy 7-12d. East/South Asia 7 -12d France/West Asia 7-12d.
www.ebay.com

www.ebay.com

260pcs M27C256B-10F1L M27C256B EPROMs ST | eBay

260pcs M27C256B-10F1L M27C256B EPROMs ST
www.ebay.com

www.ebay.com

100pcs M27C256B-10F1 M27C256B EPROMs ST | eBay

Find many great new & used options and get the best deals for 100pcs M27C256B-10F1 M27C256B EPROMs ST at the best online prices at eBay! Free shipping for many products!
www.ebay.com

www.ebay.com

100pcs M27C256B-10F1 M27C256B EPROMs ST | eBay

Find many great new & used options and get the best deals for 100pcs M27C256B-10F1 M27C256B EPROMs ST at the best online prices at eBay! Free shipping for many products!
www.ebay.com

Or buy one for $1.28

www.ebay.com

EPROM 27C256-100 32Kx8 100ns M27C256B-10F1 CMOS von STM DIC28 | eBay

Find many great new & used options and get the best deals for EPROM 27C256-100 32Kx8 100ns M27C256B-10F1 CMOS von STM DIC28 at the best online prices at eBay! Free shipping for many products!
www.ebay.com

Here pic your own that you can't seem to find.. Maybe your problem is your trying to buy new ones? New electrically erasable ones? There might be a reason volvo didn't use those ya think?

www.ebay.com

27c256 Eprom for sale | eBay

Get the best deals for 27c256 Eprom at eBay.com. We have a great online selection at the lowest prices with Fast & Free shipping on many items!
www.ebay.com
 
Last edited:
240brick89 said:
Hi ive attached the 977 fuel bin above, I am now successfully reading chips stock & custom. I am trying to burn a bin file which is looking successful on screen. the file was sent to me for the fuel ecu as I bought custom chips for my setup from someone & the car wouldn't start so they sent the bin to me [the EZK chip was fine] I have burnt two chips but unfortunately the car still will not start, so I've gone down the route of making a clone of an old chip which used to run my car to see if it's a fault with the burning or the tune itself. I am still yet to put in the car to test it.
I will post up shortly the fuel tables & AMM tables from my custom map
Click to expand...

Make sure your checksum is correct with the bin file after you changed it and are done messing with it run it through the checksum fixer program or just open it up in that IPDowns lh2.4 editor program and then re-save it will correct and fix bad checksum automatically... I think the new turnerpro fixes checksum automatically but no sure. I will try and remember to upload the checksum fixer program also once i get home..
 
sbabbs said:
Make sure your checksum is correct with the bin file after you changed it and are done messing with it run it through the checksum fixer program or just open it up in that IPDowns lh2.4 editor program and then re-save it will correct and fix bad checksum automatically... I think the new turnerpro fixes checksum automatically but no sure. I will try and remember to upload the checksum fixer program also once i get home..
Click to expand...
Thanks more good info up here, struggling a little bit here.
I am using AM 27C256 -90 PC chips, which i have selected in the programmer software (I think the 90 PC is something to do with the chip speed? Im not sure) i noticed the chips you listed above are slightly different so will pick up a batch of those as I've programmed all mine now all with No start effects, once I successfully copy a chip that i know starts the car to blank chip & starts up, then I can mess around with the custom tune once I know I'm burning properly.
I will run the binfiles through a checksum fixer before I try programming again although from what you have written im lead to believe you only need to do it if you have messed with a tune, at this point I'm only trying to copy a working chip to a blank.
Cheers
 
I think the 977 is an immobilizer ECU for a B230FK. I don't know what .bin file would be a good non-immobilizer replacement.

If you have a working chip, you can use the programmer to read the contents and save it to a .bin file, or you can load a .bin file and compare it to the chip contents.
 
If your programmer can handle 27SF512 flash chips, these should be pin compatible.
Program must be duplicated, or put in upper part of memory.
 
Thanks for your replys & the 967 bin, good call on the immobiliser unfortunately it's not that as I'm just using a 937 bjisma custom chip i had laying around & trying to make a copy of it & that used to start the car in 934 ecu, im just trying not to mess around with the 977 to much because ultimately that's the one I'm going to use. I think all chips other than immobilised ones should be interchangeable across all 9XX series ecus & start the car regardless if it's NA or Turbo (obviously if the mapping is correct for the injector size) but I think I'm correct in saying a 9XX chip won't work in 5XX series ecu

Anyway enough of me waffling I think I might of found the problem with the burn / programming & I believe it could be to do with the start address & end address often know as the offset. I have just had mine set to start the program at zero in the spreadsheet on the software.
Can anyone suggest what address in the spreadsheet to start the burn/program
Cheers
 
You must log in or register to reply here.
Back
Top