Hpx ... Frx - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 06-13-2013, 10:08 AM Thread Starter
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Hpx ... Frx

Are the HPX & FRX from rif raff worth the money or should I go a diff route ?

Also any other small mods I should consider such as 180* thermostat.

FRX
http://www.riffraffdiesel.com/category/F731-FS-RR.html
HPX
http://www.riffraffdiesel.com/catego...1-RDP-HPX.html


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2002 F-350 7.3 ex-cab short bed Beans 6 Pos
6 inch lift, 35,s, 4 Inch Turbo Back, 6637 intake
Foil delete, 05 harley front end, 08 Tailights
Tinted cab lights, and this and that and this
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post #2 of 5 Old 06-13-2013, 10:13 AM
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I have the frx. The only power gains were probably from the new stronger spring but the real gain to me was noing that i got rid of the dead head.

2000 F250 XcabSB, 4x4, 4" strait pipe, DIY intake, FRx, BDP tunes, WW2, 6.0 cooler, BTS VB, gauges, 55w digital projector HIDs
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post #3 of 5 Old 06-13-2013, 10:39 AM
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smoother idle is what im after.
and knowing im keep good fuel pressure at WOT.

the Frx is gonna be my next mod for sure.

99.5 f250 7.3 4x4 255k
PHP Phoenix, S&B, 4" Diamond Eye, Hpx, Stancor, RR Billet Wheel, RR AIH Delete, Autometer Gauges, Pro Comp leveled, Transgo Tugger, Billet TQ Converter, Warn Hubs, Int'l Up-Pipes, RR IC-Boots, Non-Ebpv Pedestal, High Flow Outlet, Hucorey's HPOP Lines, RR High Flow Fuel Fittings, RR OCR, Barder 360 Thrust Kit, 08 Tow Mirrors.

Dad-2000 7.3 108k miles, Autometer Gauges, Superchips 1705, RR AIH Delete, 6637, 4" Diamond Eye, BD Billet Wheel, TruCool Max
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post #4 of 5 Old 06-13-2013, 11:31 AM Thread Starter
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U guys running a fuel pressure gauge or any other fuel mods


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2002 F-350 7.3 ex-cab short bed Beans 6 Pos
6 inch lift, 35,s, 4 Inch Turbo Back, 6637 intake
Foil delete, 05 harley front end, 08 Tailights
Tinted cab lights, and this and that and this
Z-STROKE is offline  
post #5 of 5 Old 06-13-2013, 12:15 PM
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Quote:
Originally Posted by Z-STROKE View Post
Are the HPX & FRX from rif raff worth the money or should I go a diff route ?

Also any other small mods I should consider such as 180* thermostat.

FRX
Riffraff Diesel Performance Parts: Diesel Regulated Return | Powerstroke Regulated Return | Ford Diesel Regulated Returns - Regulated Return System
HPX
Riffraff Diesel Performance Parts: - HPX


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Unless you plan on running huge horsepower I would not bother with the 180* T stat. On the other end of the spectrum I have the 203 T-stat and the only difference I noticed from it was crappier AC in the summer (I have added a ball valve to mitigate that) so I would save the scratch on that too.

I have the HPX and the truck is a little smoother, cold starts where a little better and it is slightly quieter so for 45 bucks it is worth it.

If you plan on keeping factory injectors or go to small performance injectors then it is worth it. Plan on going big then just save up and do a RR. I would recommend doing the pre-pump mods as well and if you are going to mess with fuel pressure you should really have a fuel pressure gauge.

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
Sold: 04.5 Dodge Ram 2500 5.9 CTD, Reg Cab, 48re
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