I have the ECU software and some various ROM files but does anyone know if or where there is a cranking table of values either in injector ms or duty cycle of when the car is cranking how long the injectors stay open for?

I'm sure there must be one....or does anyone have something of a similar sized engine.....the more OEM information I can gather on the runnings of a 3.5L engine the easier this will be for myself.

;1346886']I have the ECU software and some various ROM files but does anyone know if or where there is a cranking table of values either in injector ms or duty cycle of when the car is cranking how long the injectors stay open for?

I'm sure there must be one....or does anyone have something of a similar sized engine.....the more OEM information I can gather on the runnings of a 3.5L engine the easier this will be for myself.

What problem are you trying to solve?

If you can't find the information in the form you ask for above, another way to get the information would be to buy/borrow/rent an oscilloscope and monitor the ECU signals. You can get USB connected oscilloscopes with logging capability which would make it easier to do this. Use the CAS or cam angle sensor as the trigger, and directly monitor one of the injector drivers.

What problem are you trying to solve?

If you can't find the information in the form you ask for above, another way to get the information would be to buy/borrow/rent an oscilloscope and monitor the ECU signals. You can get USB connected oscilloscopes with logging capability which would make it easier to do this. Use the CAS or cam angle sensor as the trigger, and directly monitor one of the injector drivers.

What I'm trying to do is set up my cranking table. It's pretty damn good but in a few cases I need to change some values, and since 90% of the other customers who use this ECU are all <2.6L the values from those tables on those maps are useless to me. I would of thought there would of been a cranking table even in stocko ECU's...

;1347075']What I'm trying to do is set up my cranking table. It's pretty damn good but in a few cases I need to change some values, and since 90% of the other customers who use this ECU are all <2.6L the values from those tables on those maps are useless to me.

I presume you've tried calculating the required values based on known injector flow rates and cylinder volume, extrapolating from the other maps you've seen?


;1347075']I would of thought there would of been a cranking table even in stocko ECU's...

I'm sure there is, but as that's a part of the engine cycle that few people with stock ECUs have any interest in modifying it doesn't surprise me that nobody has found it much less looked. FWIW, I've just had a look at the definition for what is probably the most widely researched/modified Evo 8 ROM and can't see anything that might be related to cranking....

I presume you've tried calculating the required values based on known injector flow rates and cylinder volume, extrapolating from the other maps you've seen?

I'm sure there is, but as that's a part of the engine cycle that few people with stock ECUs have any interest in modifying it doesn't surprise me that nobody has found it much less looked. FWIW, I've just had a look at the definition for what is probably the most widely researched/modified Evo 8 ROM and can't see anything that might be related to cranking....

Yeah I've got a cranking table setup which works OK. just needs alot of fine tuning really. Appreciate the effort in hunting down the table aswell, not to worry, more R&D continues!