HPX crossover? - Ford Powerstroke Diesel Forum
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post #1 of 20 Old 07-17-2012, 05:56 AM Thread Starter
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HPX crossover?

I was looking on RiffRaff and I see they have a High Psi crossover pipe is this mod worth doing? Seems like a good idea...

Riffraff Diesel: Riffraff SS HPX 99-03

2001 F250 7.3L Auto Super Cab Short Box
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post #2 of 20 Old 07-17-2012, 06:16 AM
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I did it, I too think it's makes sense to end the "dead-head" fuel rail (think of how easily you'll be able to restart if you ever ran out of fuel )

The only people who I've seen object to it are those who already spent $600-800 on the "old school" Regulated Return...
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post #3 of 20 Old 07-17-2012, 06:50 AM
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You are talking about two different things. The second post is about the Frx. The Hpx connects the two heads for oil. I did it and honestly I don't know that I could really tell any difference. Doesn't mean it isn't doing something just nothing I could audibly hear or physically feel.


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post #4 of 20 Old 07-17-2012, 08:04 AM
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Originally Posted by 7.3Lariat View Post
You are talking about two different things. The second post is about the Frx. The Hpx connects the two heads for oil. I did it and honestly I don't know that I could really tell any difference. Doesn't mean it isn't doing something just nothing I could audibly hear or physically feel.
hehehe... You're absolutely right! I was thinking FRX

To the OP however, I have the HPX too! And kinda for some of the same reasons (ending the "dead-head" in the HP oil system)
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post #5 of 20 Old 07-17-2012, 08:12 AM Thread Starter
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So what is the FRX?

2001 F250 7.3L Auto Super Cab Short Box
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post #6 of 20 Old 07-17-2012, 08:30 AM
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So what is the FRX?
"The Riffraff Fuel Rail Crossover was made to solve the 'deadhead' fuel rail issue on the 99-03 Powerstroke engine. By connecting the two heads and allowing a metered return you allow the air another return path, rather than forcing it through your injectors"

Riffraff Diesel: Fuel Rail Crossover™


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post #7 of 20 Old 07-17-2012, 10:14 AM Thread Starter
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Originally Posted by 7.3Lariat View Post
"The Riffraff Fuel Rail Crossover was made to solve the 'deadhead' fuel rail issue on the 99-03 Powerstroke engine. By connecting the two heads and allowing a metered return you allow the air another return path, rather than forcing it through your injectors"

Riffraff Diesel: Fuel Rail Crossover™
Now this is something I should do!

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post #8 of 20 Old 07-17-2012, 11:38 AM
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do the full regulated return.....youll like it better....
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post #9 of 20 Old 07-17-2012, 03:07 PM
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Quote:
Originally Posted by MZ 500 View Post
I was looking on RiffRaff and I see they have a High Psi crossover pipe is this mod worth doing? Seems like a good idea...

Riffraff Diesel: Riffraff SS HPX 99-03
If it did anything, I could NOT tell.

99.5 F350 CC 2WD DRW- Tow Rig, 4" Stainless Turbo-Back Magnaflow Exhaust, 6.0L Trans. Cooler, Foil MOD, CCV Mod, 05-07 Harley Headlights & Badges, AMSOIL DIY Intake, ATS Ported Turbo Housing, Edge CTS Insight, HPX, Mag-Hytec Trans & Diff Cover, BTS V/B
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post #10 of 20 Old 07-17-2012, 05:37 PM
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I did the HPX and where I really noticed it was cold starts and it is slightly quieter For 55 bucks, it is a worth it mod IMHO.

2002 F-350 4X4 ECLB 7.3 4R100 6637 filter w/ RiffRaff cover, 08 diff cover, 203* T-stat, HPX, Stancor Relay, 6.0 trans cooler, Zone leveling kit, 8'6" Western Ultramount
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