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  #1  
Old 11-20-2008, 08:39 AM
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FPR Shim ?

If i can not tell a difference with one BB, should i add one more?
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  #2  
Old 11-20-2008, 09:09 AM
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Quote:
Originally Posted by gertzrule View Post
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.
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Old 11-20-2008, 09:14 AM
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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.
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Old 11-20-2008, 09:56 AM
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you HAVE to have a gauge to do this mod correctly
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Old 11-20-2008, 10:56 AM
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He is just simply asking what differences he will feel...can someone answer him please lol
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  #6  
Old 11-20-2008, 10:58 AM
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Quote:
Originally Posted by kx592 View Post
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.....
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  #7  
Old 11-20-2008, 11:17 AM
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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.
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  #8  
Old 11-20-2008, 11:49 AM
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Quote:
Originally Posted by OregonStroker View Post
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.
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  #9  
Old 11-20-2008, 12:55 PM
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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
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