Just finished up a custom dual fueler kit for the chevelle. Used an older used PPE 01-05 controller and some of their lines for the kit. This is a low mount bracket we made in house to keep the hood on and used the factory LB7 fuel distribution block with fps and a factory LB7 line to connect the second pump to the fuel rail. Electronically I run an LB7 ecm E54, PPE dual fueler controller, S&S 12 mil in the valley and a stock LLY pump on the belt. I cannot for the life of me get it to regulate fuel pressure correctly. It idles at 160mpa (23k psi) 99.9% of the time. I haven't driven the car yet due to this, with the dual pumps working. I can remove the pulley off the second pump, remove my idler and run a stock belt and it works fine with the 12mm and all the ppe controls connected work without any issues, but as soon as I put the belt on the second pump it shits the bed.
I've swapped out the controller and wiring for another 01-05 PPE controller, same issue.
I've tried 2 different regulators on the belt driven pump, both bosch oem new, one lb7 and one lly, same result. I did get it to run correctly once right after the LLY reg install, was short lived as after turning the car off and refire it was maxed out again.
I installed a new bosch lb7 reg on the 12 mil pump and the belt driven pump, both now with the same stock lb7 regulators and still same issue.
I reinstalled the lly reg back on the belt driven pump and it worked!! but again once I cycled the key it maxed rail pressure. And stays maxed after every key cycle.
I've even changed out the belt driven pump to a different known good one and same result, maxed pressure.
I even cut the connector off the dual pump (fpr connector), installed a brand new one and same result.
I've changed my tuning, B1010 table and all the other fuel pressure related tables but no change. Normally we do nothing in the tune for dual fueler setups, so I returned all my tables back to stock, but same result maxed pressure.
I must be missing something or this ppe controller will just not cut it?? Hoping someone can chime in with similar experience or a good solution. I want this thing to work.
Rick.
I've swapped out the controller and wiring for another 01-05 PPE controller, same issue.
I've tried 2 different regulators on the belt driven pump, both bosch oem new, one lb7 and one lly, same result. I did get it to run correctly once right after the LLY reg install, was short lived as after turning the car off and refire it was maxed out again.
I installed a new bosch lb7 reg on the 12 mil pump and the belt driven pump, both now with the same stock lb7 regulators and still same issue.
I reinstalled the lly reg back on the belt driven pump and it worked!! but again once I cycled the key it maxed rail pressure. And stays maxed after every key cycle.
I've even changed out the belt driven pump to a different known good one and same result, maxed pressure.
I even cut the connector off the dual pump (fpr connector), installed a brand new one and same result.
I've changed my tuning, B1010 table and all the other fuel pressure related tables but no change. Normally we do nothing in the tune for dual fueler setups, so I returned all my tables back to stock, but same result maxed pressure.
I must be missing something or this ppe controller will just not cut it?? Hoping someone can chime in with similar experience or a good solution. I want this thing to work.
Rick.
