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post #1 of 9 Old 03-25-2010, 05:12 AM Thread Starter
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fpr shim...

Has anyone ever tested the fpr shim on a dyno? I've had it in mine for a while now, probably about a year or so. I've been playin with my programmer and stuff tryin to get better mileage, took it from stage III to stage I. Could definitely tell a difference. Then last night, I took out the fpr shim. It felt like it had more power with out it! I'm just curious if anyone has any proof of it actually helping.

1996 F250 CC SB ZF5 4WD
9000LB Ramsey winch, 3" dp, straight exhaust, superchips mini max, 6637 filter, Bar None Diesel E-fuel, South Bend Clutch, Autometer gauges, 4" Superlift, 315/75 Toyo MT's, custom step bars
2011 F150 CC 2wd with V6 Eco-boost
factory twin turbo and intercooler, 365 hp and 420 ft/lb torque
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post #2 of 9 Old 03-25-2010, 05:22 AM
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Every truck is diferent some trucks need the extra presure and some do better with out it. The only way to tell is to put a fuel presure guage on it and strap it down and make adjustment till its happy. If you have a stong pump the BB may be to much.

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post #3 of 9 Old 03-25-2010, 07:19 AM Thread Starter
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Well, I'm gonna run it without the bb for now. I'm also going to put it back on stage III. I didn't mention before, that when I put the bb and the programmer on, I hadn't cut the cat out yet. Don't know if that makes a difference or not. I still want to get a 3" downpipe and cut out my muffler.

1996 F250 CC SB ZF5 4WD
9000LB Ramsey winch, 3" dp, straight exhaust, superchips mini max, 6637 filter, Bar None Diesel E-fuel, South Bend Clutch, Autometer gauges, 4" Superlift, 315/75 Toyo MT's, custom step bars
2011 F150 CC 2wd with V6 Eco-boost
factory twin turbo and intercooler, 365 hp and 420 ft/lb torque
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post #4 of 9 Old 03-25-2010, 07:25 AM Thread Starter
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I've got the stock downpipe off of an '02 7.3, it looks like a 3", couldn't I use it? Might be some unique welding involved, but I think it oughta work, what you think?

1996 F250 CC SB ZF5 4WD
9000LB Ramsey winch, 3" dp, straight exhaust, superchips mini max, 6637 filter, Bar None Diesel E-fuel, South Bend Clutch, Autometer gauges, 4" Superlift, 315/75 Toyo MT's, custom step bars
2011 F150 CC 2wd with V6 Eco-boost
factory twin turbo and intercooler, 365 hp and 420 ft/lb torque
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post #5 of 9 Old 03-25-2010, 07:30 AM
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Might be alot of fab work to get it to fit, tight area on an obs and the sd has all the room in the world to come down. If i am not mistaken the fpr shim is more to improve idle quality and a little quicker throttle response. On a truck that has fuel pressure that is correct or near correct the fpr shim wont do anything and may damage injector O rings

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96 F350 4x4
Everything.
And its expensive.

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post #6 of 9 Old 03-25-2010, 07:40 AM Thread Starter
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Glad I took it off then...

I was looking at the old SD downpipe the other day and it looks like it just comes straight down from the turbo, I was thinking it might be a little long before the bend at the bottom of the truck, maybe I'll play with it one day and see if it'll work.

1996 F250 CC SB ZF5 4WD
9000LB Ramsey winch, 3" dp, straight exhaust, superchips mini max, 6637 filter, Bar None Diesel E-fuel, South Bend Clutch, Autometer gauges, 4" Superlift, 315/75 Toyo MT's, custom step bars
2011 F150 CC 2wd with V6 Eco-boost
factory twin turbo and intercooler, 365 hp and 420 ft/lb torque
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post #7 of 9 Old 03-25-2010, 07:46 AM
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The obs DP comes off the turbo and down along the trans at an angle and doesnt clear by very much ANYWHERE lol. I doubt the SD one will work at all

Elmo/Shane

96 F350 4x4
Everything.
And its expensive.

471,000 Miles


"100% worked for, 100% paid for"
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post #8 of 9 Old 03-25-2010, 10:36 AM Thread Starter
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Quote:
Originally Posted by Fordman247365 View Post
The obs DP comes off the turbo and down along the trans at an angle and doesnt clear by very much ANYWHERE lol. I doubt the SD one will work at all
Oh, ok. Well, it sounded like a good idea anyway. I guess I need to stop being so cheap and buy one huh...

1996 F250 CC SB ZF5 4WD
9000LB Ramsey winch, 3" dp, straight exhaust, superchips mini max, 6637 filter, Bar None Diesel E-fuel, South Bend Clutch, Autometer gauges, 4" Superlift, 315/75 Toyo MT's, custom step bars
2011 F150 CC 2wd with V6 Eco-boost
factory twin turbo and intercooler, 365 hp and 420 ft/lb torque
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post #9 of 9 Old 03-25-2010, 04:41 PM
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lol yeah you see them used on here

Elmo/Shane

96 F350 4x4
Everything.
And its expensive.

471,000 Miles


"100% worked for, 100% paid for"
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