k i can understand that on the free rev but why is it doin it when i got 50 psi of boost and it does not smoke when it is spooled up.... btw yes they are very large injectors
Have you tried turning the box down just for giggles to see if are actually just running out of fuel all together?
This is the problem, I can twist the thing to fuel as much as you want, literally, I can twist it until it is physically impossible for the pump to supply the fuel. The problem is that based on each application you need different amounts of stretch. Obviously a stock truck needs one thing and then as you change injectors, lines etc, you need something different.
No one out there quote fuel flow on their aftermarket pumps or injectors so it is hard to say what you need exactly.
I know for sure that in a free rev situation with large injectors we start to stretch the pump with no boost and it can make the truck rough as it starts to fuel. Typically when this happens is starts coughing up smoke out the tailpipe.
Why you are not getting fuel over 3000 rpms is unknown unless you are just out. If that is the case lowering the PL to PL03-PL05 will drastically reduce the amount of main stretch and should let you know if we are just running out?
I am not sure what injectors we tuned with but, they were large and we could literally black out the sun at 3500rpm (all the owner wanted to spin it) andhe was at over 60psi with twins. The smoke never even thought of cleaning up?
So either we are flat running out of fuel, or the box is not working right?