fpr shim?

[shortrac]

whats a fpr shim i c that people do it to ther truck but what is it and how u do it and what dus it do to shim it

[ryandamo]

OBS FPR Shim and Gauge Install


whole write up on the mod

[storkerlovr]

ive been thinking about doing this. prob will tomar

[shortrac]

a thanks alot. will it put a lil more black smoke? i got a tw chip already

[storkerlovr]

^^^^^^^ X2

[shortrac]

just wanna make sure its ok 2 do this with my tw chip?

[richied-ss]

im no expert but i do some readin up. and its ok to do with any chip i have mine done and the smoke isnt any more noticeable but the power on topend is somewhat noticeable. with these trucks the only way to acheve more smoke is threw injector mods. but like i said im no expert im sure there will be a powerstoke genius threw here shortly to correct me if im wrong.

[shortrac]

Originally Posted by richied-ss

im no expert but i do some readin up. and its ok to do with any chip i have mine done and the smoke isnt any more noticeable but the power on topend is somewhat noticeable. with these trucks the only way to acheve more smoke is threw injector mods. but like i said im no expert im sure there will be a powerstoke genius threw here shortly to correct me if im wrong.

kool thanks i think im gunna do it

[GM Duraturd]

Its fine to do, I have TW tunes and my FPR is shimmed. I have heard of the fuel pressure getting way out of hand with the shim and tunes but mine stays in the happy zone

[shortrac]

Originally Posted by GM Duraturd

Its fine to do, I have TW tunes and my FPR is shimmed. I have heard of the fuel pressure getting way out of hand with the shim and tunes but mine stays in the happy zone

whats the happy zone what psi