High Fuel Pressure at WOT

stangJunkie04

New Member
Jul 11, 2005
44
1
0
Vernon, CT
I recently upgraded my KB BAP from the 20amp version to the 40amp version since I was blowing the inline 30amp fuse on start up with my twin GT pumps. Well the install was pretty painless, but now when I hit WOT my fuel pressure jumps up to 100psi at full boost (16*) & the car A/F goes rich 10.8. I checked the fuel rail with an external gauge and my autometer fuel gauge is accurate. I am wondering what could be causing this, I know I upgraded to the 40amp, but isnt it still a 17volt unit. Could it be a FRPS? any help would be appreicated.