I've tuning my 945 to run with E85. My 945 is with AW71L and my friends car is with manual M90 transmission and engines are B230FK. My LH version is 954.
I've change injectors to 668cc/min and -012 AMM. Also same situation with my friend, but he use gasoline and 598cc/min injectors (-012 AMM also). My friend use 954 bin in 984 LH ecu.
Chip is tuned to use those bigger injectors by injector constant #4 and havent touched any other injector constant.
Our cars runs fine with that injector scaling. We have tested other constants both cars and all other constats change do odd behavier to fueling some points. So only constant #4 need to change to get everything to work fine. Rest fine tuning is left to LH adaptive function.
I have to change quite many maps, cause i use E85.
Start fueling, Cold enrichment and so on. With gasoline there is no such needs to do change's anything, but with Ethanol everything change's.
I've made my own XDF, cause there is not available enough good XDF for 954 bin. Its based to Jaybreeze's 954 and my own research with 954/962/967/984 bin/XDF.
Its possible bend LH adapt bigger injectors and different AMM and get car working normally.
Standard -016 goes to full output in 0,8 bar boost, so that's reason why we change our AMM to -012 version. I use 1 bar boost and my friends boost is bit higher (1,3bar). -012 AMM works with 1,5 bar boost, but after that its in limit.
Of course our main fuel maps are bit different than standard, but reason is ovious, our motors are not standard motors. Change's are not big and they are mainly in lower rpm's (high load) and points where boost start.
Basicly i've change:
Injector constant #4
Main fuel map
scaling and main fuel map fine tuning
PID-controller adjustment's
AMM linearisation table
With E85
Starting fueling
Cold running
Ect...
Tuning needs patiece, cause LH is very adaptive and love's lambda 1.
So reset LH after tuning session and that's only way to find out, have you done everything correctly. Resetting mean, cut all power from LH for enough long time to get rid those RAM stored lambda adaptations.
If all is done Ok, next start will be fine and motor runs normally.
If not, start will be difficult (lean fuel) and come's with wandering idle. Specially if mixture is rich or too lean.
Jaybreeze, Ipdown and Beebee's (and others) puplic work wiht LH, have done this project possible!
BIG thank's to them!
