FPR Shims

[spuds99]

I am considering putting in a shim. What I would like to know is, if I increase my FP with either a BB, or using an allen head screw, will that cause any problems with my injectors? Any help is appreciatted..:burnout

[pipelayerjdh]

I have been running a shim for almost a year with no problems. I have not heard of any problems caused by the shim, but that doesn't mean they have not happened.

[onecrazyblackredenck]

Where is the write up on this mod located, I have been tryhing to figure out how to do it, but where is it found?What is the advantage>? Not trying to hi jack this thread

[4everlearning]

http://www.powerstroke.org/forum/7-3-mod-help/

[strokin_early_99]

If you use the #4 allan head bolt, the threads only need to be about 1/4" long and the head should be ground down to about 1/8"-3/32" to start. Then check pressure and grind thinner as needed.

Keep Strokin'

[pinkfloyd]

What is the ideal psi? just curious

[todd]

i did mine with the bb and it would start harder and not idle right for about 5 mins after each start and did not notice any difference driving after it warmed up so i took it out but every trucks different and its free and takes less than 15mins so what ya got to loss by trying

[kblv247]

newbie here! what does it do?????? what kind of improvements does it make???

[SMKSTAX]

It raises your fuel pressure. In most trucks they idle smoother and have a quicker throttle response.

[JDAVIS]

So is the FPR in the same place on a 99-03 PSD as it is on the OBS PSDs? I looked at the post on how to do it on the OBS, but I just glanced under my hood the other day and what I saw didn't resemble what was in the pictures.