My 07 LBZ has a 3500 RPM limit on it. Anyone know where to play with the tunes to remove this or raise it.
Thanks,
Rob
My 07 LBZ has a 3500 RPM limit on it. Anyone know where to play with the tunes to remove this or raise it.
Thanks,
Rob
B1122 is more than likely the problem, it will limit the fuel amounts to 30mm3 at and above 3500RPM, though, because of the table interpolation the limiting will probably start to kick in at around 3300 - 3400RPM.
If you raise the values in that table at the higher RPM the value will be carried through to higher RPM's (the table ends at 3500). You also need to look at B1117, B1118 & B1119.
Cheers,
Ross
I no longer monitor the forum, please either post your question or create a support ticket.
I figured those tables would be the ticket. I'll try adjusting those today and testing.
I was also looking at the "pedal pos. to desired torque" table. Torque starts falling off at 3250rpm's and goes to 0 at 3550rpm
Ross, what is the difference between B1118 and B1119?
Thanks,
Rob
Last edited by IdahoRob; February 28th, 2007 at 11:55 AM.
2013 LML, 550hp with factory emissions, stock cp4 and compound turbos.
2002 LBZ, 4x4 (Max'd Out) 6000lbs 9.36 @ 154 mph NHRDA Champion and Record holder
1965 El Camino, duramax 9.6 @ 149MPH
All EFI tuned by Adrenaline Truck Performance
OK, a little update.
I modded the B1118 and B1119 and still hit the 3500rpm limiter. I then modded those as well as "pedal pos. to desired torque" table and still have the RPM limiter.
I logged the runs, but haven't had time to look at them.
I'm not sure where to go from here.
EDIT: Dooouuuh, I forgot to mod the B1122 also. I'll do that and see.
Thanks,
Rob
2013 LML, 550hp with factory emissions, stock cp4 and compound turbos.
2002 LBZ, 4x4 (Max'd Out) 6000lbs 9.36 @ 154 mph NHRDA Champion and Record holder
1965 El Camino, duramax 9.6 @ 149MPH
All EFI tuned by Adrenaline Truck Performance
Well even with the B1122, B1118, B1119 modded I still have the 3500rpm limit.
Any thoughts?
Thanks
2013 LML, 550hp with factory emissions, stock cp4 and compound turbos.
2002 LBZ, 4x4 (Max'd Out) 6000lbs 9.36 @ 154 mph NHRDA Champion and Record holder
1965 El Camino, duramax 9.6 @ 149MPH
All EFI tuned by Adrenaline Truck Performance
Some logs would help if possible Rob, I'd like to see what the Main mm3 is dropping to if possible.
Cheers,
Ross
I no longer monitor the forum, please either post your question or create a support ticket.
Ross,
I sent a couple logs. Hope it went to the right place (support@efilive)
Looks like the main flow rate drops a bunch and the turbo vane position goes to 0 for a bit. Any way to mod the flow rate and duration like the old platform?
Thanks a bunch,
Rob
2013 LML, 550hp with factory emissions, stock cp4 and compound turbos.
2002 LBZ, 4x4 (Max'd Out) 6000lbs 9.36 @ 154 mph NHRDA Champion and Record holder
1965 El Camino, duramax 9.6 @ 149MPH
All EFI tuned by Adrenaline Truck Performance
Thanks Rob, I got the logs.
I forgot to ask, did you change the upper RPM cols in B1115 & B1116? I only ask because on a stock LBZ the desired torque figures plumet between 3250 and 3500 RPM (which will drop the main mm3 numbers), just like your commanded fuel drops from around 80mm3 down to 28mm3 over a similar RPM span.
Cheers,
Ross
I no longer monitor the forum, please either post your question or create a support ticket.
I did change B1115 and B1116 Ross. Thats what is bugging me. I can't seem to control it with any of the available tables.Originally Posted by GMPX
Thanks for your help.
2013 LML, 550hp with factory emissions, stock cp4 and compound turbos.
2002 LBZ, 4x4 (Max'd Out) 6000lbs 9.36 @ 154 mph NHRDA Champion and Record holder
1965 El Camino, duramax 9.6 @ 149MPH
All EFI tuned by Adrenaline Truck Performance
Well, that's what you get for trying to rev it like a gasser .Originally Posted by IdahoRob
Did you notice if the logged torque value also dropped?
I'll keep looking I guess.
Cheers,
Ross
I no longer monitor the forum, please either post your question or create a support ticket.