[steelheadrob]

I recently installed a JMS BAP on my 2016 Camaro SS and I am not seeing any improvement in my lowside pressure. I have data logged the lowside presure, under a very streetable tune, whipple, lt4 fueling high pressure, injectors, intank, pump gas and 9 psi boost, lowside is reading 48 to 50psi of lowside pressure with or without jms connected. Trying to see if I am missing something or got something installed incorrectly.

I tapped into the red wire with the purple stripe that goes to the Chassis Control Module behind the rear drivers fender that feeds the fuel pump. (red wire from the JMS first into JMS then white wire from JMS out). I have it set up to be controled by the throttle, I have tested the voltage output on the white wire coming out of the JMS with the car turned off as someone push down on the throttle it increases from the battery voltage of 12.xx to 17.47 volts. I have also tested the voltage on the red wire with the purple stripe at the Chassis control module plug by connecting a voltage meter and setting it to max voltage reading and during a full throttle pull, it reads 17.47 max volts under a full throttle pull. I then tested the voltage on the grey wire that comes out of the Chassis control module plug that I believe feeds the intank fuel pump. The max voltage under a full throttle is right around 12.5 volts either with or without the JMS connected, I was expecting this to read around 14.5 volts without the JMS connected and 17.4 with the JMS connected. Has anyone tested the voltage on the grey wire that feeds the fuel pump?

Any ideas? Am I missing something? I am beginning to wonder if I got a bad ZL1 intank pump and need to switch it out.

Thanks for the input.