AGRO
September 20th, 2011, 10:28 PM
Hi all,
im trying to tune an LS1 pcm with some ID2000cc injectors. Injector dynamics supply the battery offset table, small pulse adjust, minimum pulse width, default pulse width and flow rate.
I flashed the pcm with the supplied figures, unfortunately it runs pig rich, about 10.6:1 on idle. I have tried the obvious and leaned out the ve table to no effect. INJBPW reads 1.755, and stays locked on idle and light partial throttle.
To combat this i set the entire small pulse adjust to -0.400, this dropped the pulse width to about 1.329, and made a massive difference to the afr, the down side is that the ve table looks fairly wild! Im seeing 1.08g/s at wide open throttle (105kpa) before boost, i have run out of resolution in the timing table.
What is the proper way to correct this? Is there one?
fwiw, fuel pressure is at about 40psi on idle vacuum line disconnected, and about 35psi vacuum connected. Twin turbo 402ci heads cam.
Any suggestions appreciated.
Girch.
im trying to tune an LS1 pcm with some ID2000cc injectors. Injector dynamics supply the battery offset table, small pulse adjust, minimum pulse width, default pulse width and flow rate.
I flashed the pcm with the supplied figures, unfortunately it runs pig rich, about 10.6:1 on idle. I have tried the obvious and leaned out the ve table to no effect. INJBPW reads 1.755, and stays locked on idle and light partial throttle.
To combat this i set the entire small pulse adjust to -0.400, this dropped the pulse width to about 1.329, and made a massive difference to the afr, the down side is that the ve table looks fairly wild! Im seeing 1.08g/s at wide open throttle (105kpa) before boost, i have run out of resolution in the timing table.
What is the proper way to correct this? Is there one?
fwiw, fuel pressure is at about 40psi on idle vacuum line disconnected, and about 35psi vacuum connected. Twin turbo 402ci heads cam.
Any suggestions appreciated.
Girch.