FRX or 4" exaust 1st? - Diesel Forum -
'99 & up Upgrades and Aftermarket - 7.3L Engine Upgrading or adding OEM or aftermarket equipment to your 1999-Up Super Duty or Excursion with 7.3L Power Stroke diesel engine. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old 06-10-2013, 07:49 PM Thread Starter
Senior Member
Join Date: Aug 2006
Location: South Louisiana
Posts: 370
My Photos: (0)
Feedback Score: 0 reviews
FRX or 4" exaust 1st?

I have a 01 auto 3.73 gear auto. It has a edge evolution tuner, S&B air cleaner, ATS spider, GDS ball buster turbo, and walker big truck muffler. I also have the hutch and prefilter mod, harpoon and zoodad. Should I go with frx or 4" exaust next?
brotherxb is offline  
Sponsored Links
post #2 of 4 (permalink) Old 06-10-2013, 11:14 PM
Senior Member
Join Date: Jan 2008
Location: Colorado Springs, CO
Posts: 1,130
My Photos: (0)
Feedback Score: 0 reviews
Id do the frx first, youll gain more from it than an exhaust

03 F350 7.3L Auto CC LB Dually 410's (LS Rear)

PHP/Beans tuned/250/100 FF inj's, BTS Tranny, Strictly Diesel complete fuel system with RR & FB delete, Pius LASB from Irate, Swamps HVHF IDM.
Autometer Nexus Guages, 4"MBRP, DieselSite Coolant filtration system/billet housing/HP X-Over line. Baldwin PA2818(6637) RR Boots/CBillet Plenums, ('06) 26 row Tranny & PS Cooler, LarryB's Genuine Denso Starter
INFRNL is offline  
post #3 of 4 (permalink) Old 06-11-2013, 09:38 PM
Senior Member
Join Date: Mar 2008
Location: Roy, UT
Posts: 160
My Photos: (0)
Feedback Score: 0 reviews
I agree with INFRNL, since you are already letting it breathe a little better, do the FRX. But, consider the Ford AIS for a lot of good clean air coming in.


2000 F250 Ext Cab Long Bed 7.3 Auto
Performance Red
Ford Severe Duty AIS w/Zoodad and fender sleeve, MBRP 4" Turbo Back, FRx, EGT/Trans/Boost gauges, AIH Delete Plug, Dieselsite Boots with Plenum Inserts, PHP Hydra, TransGo Shift Kit
Born in KY on 10/05/99

2005 F250 Lariat, CC, Short Box, FX4 - SOLD...loved that truck!
Arizona Beige/Tan
Magnaflow 4" Cat back
Leveled w/ Toyo Open Country A/T 285/75-18's
Bilstein 5100's
Born in KY on 12/07/04
Green2D is offline  
Sponsored Links
post #4 of 4 (permalink) Old 06-12-2013, 12:25 PM
Senior Member
Join Date: Dec 2001
Location: Wellington Nv.
Posts: 10,544
My Photos: (3)
Feedback Score: 3 reviews
I would do a full fuel filter-fuel bowl delete kit with the post filter...Strictly's kit is the best available IMO. It works!
caryt is offline  
Sponsored Links

  Diesel Forum - > 1999-2007 Ford Super Duties > '99 & up Upgrades and Aftermarket - 7.3L Engine

Quick Reply

Register Now

In order to be able to post messages on the Diesel Forum - forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome