Attention: TDR Forum Junkies 
I have been watching the fuel pressure do erratic things for the last two weeks like dropping to 5psi at idle then back to 12 psi with no intervention on my part. It finally took the big dive and stayed at 1 psi, it was now time to park it and find a solution. I did some trouble shooting and the pump is getting at least 13. 5 vdc when it should.
I have been reading this site for years and knew what to expect from the lift pumps as this would be the second one I have replaced since I bought the truck last year.
I had made a desision to go with the RASP pump, I like the redundacy and the way it is constructed. I called Bill at DTT to get one, he sells the kit and the hoses are up to your particular application. He recomended talking to Olee Poole of Power by Poole as he sells a complete kit. I wanted to relocate my lift pump and plumb in the RASP at the same time. I figured installing the new system would be enough with out the headach of unfamilar plumbing.
I choose to use the stock lift pump (as I have several) even though it had failed in service it might be good enough (cheap$) in its present condidtion to prime the system and start the motor. I could always replace it later as the hard part was done. I wanted to add the function of a manual switch to fill the filter, since the stock pump is driven from the ECM a second source of power was needed to make the pump run independantly. I used a circuit from the "Painless Fuse block" and added a steering diode to ensure no power from the 2nd source was going back to the ECM outputs.
So the big question How well does it work??
My dying lift pump is still dying, but was able to muster enough to fill the new filter and prime the RASP system all with a flick of a switch :-laf thats nice. Turn the key and the lift pump does its usual burst, once running the RASP takes over and its pressure switch cuts out the stock lift pump. I have seen pressures of 12-13psi at idle and under most driving conditions. If I run up to 3000 rpm with the DDUFM box on 5x5 the fuel pressure will be at 15psi. Olee set up the pressure relief valve for me and seems to have hit it right on.
It took the better part of two days to install it start to finish, these push-loc hoses and fittings are top notch, easy to work with and secure.
I have been reading this site for years and knew what to expect from the lift pumps as this would be the second one I have replaced since I bought the truck last year.
I had made a desision to go with the RASP pump, I like the redundacy and the way it is constructed. I called Bill at DTT to get one, he sells the kit and the hoses are up to your particular application. He recomended talking to Olee Poole of Power by Poole as he sells a complete kit. I wanted to relocate my lift pump and plumb in the RASP at the same time. I figured installing the new system would be enough with out the headach of unfamilar plumbing.
I choose to use the stock lift pump (as I have several) even though it had failed in service it might be good enough (cheap$) in its present condidtion to prime the system and start the motor. I could always replace it later as the hard part was done. I wanted to add the function of a manual switch to fill the filter, since the stock pump is driven from the ECM a second source of power was needed to make the pump run independantly. I used a circuit from the "Painless Fuse block" and added a steering diode to ensure no power from the 2nd source was going back to the ECM outputs.
So the big question How well does it work??
My dying lift pump is still dying, but was able to muster enough to fill the new filter and prime the RASP system all with a flick of a switch :-laf thats nice. Turn the key and the lift pump does its usual burst, once running the RASP takes over and its pressure switch cuts out the stock lift pump. I have seen pressures of 12-13psi at idle and under most driving conditions. If I run up to 3000 rpm with the DDUFM box on 5x5 the fuel pressure will be at 15psi. Olee set up the pressure relief valve for me and seems to have hit it right on.
It took the better part of two days to install it start to finish, these push-loc hoses and fittings are top notch, easy to work with and secure.
:-laf 
I am puting it on my list of gotahaves . I am geting ready for gauges now i hope that once i get them in i don,t instantly find suprises 
