im sure you heard this before but, i need some advice. my truck with ez on 4 and tst on 5/5 from a dead stop 1st gear has a popping feal and sound like if i was hitting rev limiter. also the truck feals faster on level 4/4. does that make sense? please help with any ideas hoe i can fix this problem. thanks

 

it could be faster on 4/4. the tst will drop fuel pressure to 0 leaving the rail without fuel with the stock lift pump. then add the ez trying to boost rail pressure, without fuel to do so. I think many CR cummins guys should be thankful the cp3 does not fail like the vp44 did when subjected to low fuel pressures. any vibration with it? get worse slowing down?

 

You need to turn the EZ down to level 2 or 3. That's way too much pressure and you are sucking the fuel rail dry. You need a FASS or some other aftermarket fuel pump too if you're gonna run that stack. I run my EZ on level 3 and can go up to 6/6 on the TST before I start running out of fuel....

 

You probably are defueling too. Mine did it real bad until I got a BD Power Top Speed Eliminator which stops the defueling....

 

how much was that? without the edge i had bad lag so i didnt want to turn it down. ill try level 3 and see, do you have a fuel pressure guage on yous and that how you can tell its loosing pressure? thanks

 

I have a gauge on mine and the lift pump will not keep up. I am pretty sure TST even says you will need a lift pump above 4. the fass has no problem , have one a 600 hp truck and its the 95gph. I have the aluminum fuel filter top with the FP reading off it.

 

So even with the FASS you run out of fuel?

 

he is saying in the rail itself , so the cp3 is maxed out, mod cp3 soon?