Ok im running a vortec 5.7 with tbi using a 4 barrel intake and adapter plate. Im using a moates apu1 and trying to adjust the fuel map to give it more fuel however the cells in the fuel table wont go above 99 and stay there. How do we get these values to remain at 100 or more? Also if tables wont go above 100 has anyone else run dual tbi or made a copy of the frankenstein 4 barrel tbi i have seen online.

 

100% VE is as high as they go. Increase the BPC value by 15% and lower the VE table(s) by the same 15%. Continue tuning, keep an eye on the injector duty cycle.

RBob.

 

What is bpc? Sorry im a complete newbie to the tuning stuff.

 

Base Pulse Constant

 

Ok i think i found my bpc constant, im having issues with my apu1 with datalogging and emulation its like my ecm is stuck in limp mode. Ecm is 16197427 code bnkm im using 94-95 truck bnkm bin $31 xdf and adx fike a219$31v250.adx. If i throw in another ecm 16197427 from a truck that had bjyl 5.7 4l60e trans it will log data under $od so i know its not pc issues but wuen i put my stock ecm in its not letting me emulate or data log when using the correct set up in software. Any ideas

 

I do not see base pulse constant in the parameters

 

7427 PCM...Reduce the injector size parameter.

 

Thank you ill try that tonight.

 

What Fast said, $31 doesn't use a BPC value/table.

RBob.