FPR Shim ?

[Justin M]

If i can not tell a difference with one BB, should i add one more?

[Soaggydogg]

Originally Posted by gertzrule

If i can not tell a difference with one BB, should i add one more?

NO! You should really be doing the shimming with a Fuel Pressure gauge and not guessing at what it feels like.

[OregonStroker]

i have tonys tunes on my pickup, and am wondering if doing the fpr shim would help me at all? my sig has all minfo of pickup.

[Big K]

you HAVE to have a gauge to do this mod correctly

[kx592]

He is just simply asking what differences he will feel...can someone answer him please lol

[Big K]

Originally Posted by kx592

He is just simply asking what differences he will feel...can someone answer him please lol

Well, he might not be changing the pressure at all....reason for the gauge...

But you should notice...quieter idle and an increase in throttle response....but without the gauge, you can increase it TOO much.....

[highland512]

I had it in my truck before the TW and after the TW I took it out for a few days and noticed the the idle while set on extreme was a little more choppy but thats about it, no more or less smoke or throttle response.

[Soaggydogg]

Originally Posted by OregonStroker

i have tonys tunes on my pickup, and am wondering if doing the fpr shim would help me at all? my sig has all minfo of pickup.

I don't know if there is shimming on the SD with electric fuel pump. The OBS has a two stage mechanical pump but shimming is done on the fuel bowl.

For the SD I would suggest getting a regulated return and then you can easily fine tune your fuel pressure.

[z250kid]

when you say gauge i bought a 100psi liquid filled gague with a tee fitting so i can us the bleeder and a 90 degree elbow for the gauge

right im gonna install on a warmer day