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Hutch and Harpoon Mod (Banjo and Hutch) How To - 7.3L Powerstroke

The Banjo and Hutch (aka Hutch and Harpoon) mod were one of the first "budget" mods for the 7.3L Powerstroke. The Harpoon mod when done, allows for more complete fuel fill up's by removing a portion o

Why the Blue Spring Upgrade Matters on a 6.0L Powerstroke

The blue spring upgrade exists because the 6.0L Powerstroke has a fuel pressure problem that usually starts small, stays hidden, and eventually gets expensive. From the factory, the regulator in the f

Top 10 7.3 Powerstroke Scan Tool Readings Every Owner Should Know

A good scan tool can save you a pile of money if you know what numbers actually matter. Codes are useful, but live data is where the 7.3 starts telling on itself. Hard start, no-start, low power, smok

Fuel Pressure Regulator “Blue Spring” Kit for 6.0L Powerstroke (2003–2007)

The Fuel Pressure Regulator “Blue Spring” Kit (AP0086) fixes a boring problem that becomes an expensive one: low fuel pressure on a 6.0L. This updated spring restores fuel pressure back toward where i

7.3 Powerstroke Billet Compressor Wheel Upgrade (TP38/GTP38)

If your 7.3 Powerstroke has ever done the turkey gobble / flutter thing under load, you’ve met compressor surge. In laymans terms, surge is teh turbo becoming innefficient/pushed too far for its desig

7.3 Powerstroke Billet Thermostat Housing for 1999–2003: Fixing Corrosion and Coolant Leaks

A 7.3 Powerstroke thermostat housing leak often starts small—coolant smell, dried residue near the upper hose, or a slow drip that usually only shows up after a heat cycle. On 1999–2003 7.3L trucks, a

Installation

Riffraff Diesel 99-03 GTP38 Rebuild Instructions Riffraff Diesel 99-03 GTP38 360 Rebuild Instructions Riffraff Diesel 94-Early 99 Bellowed Up-pi

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7.3L Powerstroke VSS Rear Axle Speed Sensor: Problems, Related Codes, Diag And Replacement

A bad rear axle speed sensor can cause a lot more than a dead speedometer on a 1994–2003 7.3L Powerstroke. The rear VSS signal is used for vehicle speed, ABS operation, and automatic-transmission shif

7.3 Power Stroke 6637 Filter Mod (BHAF): More Airflow, More Filter Area, Simple Install

The 6637 filter modification (often called the BHAF – Big Honkin’ Air Filter) is the classic 7.3 Power Stroke intake upgrade: replace the restrictive stock airbox with a large, heavy-duty style cylind

How It Works: HEUI Systems

The 7.3L and 6.0L Power Stroke engines are somewhat unique in that they use oil pressure to run their fuel injection systems. The system was created with a joint venture between Caterpillar and Intern

The Deadhead System - What it is and how to fix it - 6.0L and 7.3L Powerstrokes

For 7.3’s and 6.0’s alike, the fuel system could benefit from an upgrade. One that removes the deadhead issue that plagues each engine. The fix will increase injector life, increase throttle response

OBS 7.3 vs. Super Duty 7.3 Differences That Matter When Ordering Parts

The 7.3L Powerstroke ran long enough that people started treating all of them the same. That is how wrong parts get ordered. A 1996 OBS 7.3 and a 2002 Super Duty 7.3 share the same basic engine family

PHP Hydra Chip for 7.3 Power Stroke (1994–2003)

At Riffraff, we stock the PHP Hydra Chip because it fixes the two biggest problems with old-school 7.3 tuning: not knowing what tune you’re on and being stuck with whatever tune was installed years ag

6.0L Powerstroke: What to look for when buying.

Contrary to popular belief, the 6.0L Powerstroke is a great engine! Once you work all the bugs out. If you're in the market for a new-to-you 6.0L Powerstroke, here's a list of what to look for when bu

7.3 Powerstroke Injector Cup Replacement: Tips and Tricks

The legendary Ford 7.3L Powerstroke diesel is famous for being a reliable workhorse, but like any engine, it has its weak spots. One very common issue is leaking or damaged injector cups, which can le

Upgrade Your 7.3's CCV System: Crankcase Vent Billet Doghouse CCV Cover 94-03

Upgrade your 7.3L truck’s crankcase ventilation system with the Riffraff Diesel Billet Doghouse CCV Cover (94–03). Machined from 6061-T6 billet aluminum and anodized for durability, this cover deliver

7.3L Hydra and Other Popular Tuning Systems

Tuning is the quickest and biggest bang for your buck modification in terms of adding horsepower and improving drivability. The OE manufacturers did a good job tuning the 7.3 out of the factory, but o

7.3 Powerstroke PCM Code Locations (1994–2003) + How to Decode What You’re Looking At

Ford didn’t make it easy: on a 7.3 truck you’ll see multiple “PCM codes” that mean different things (hardware vs. software vs. emissions calibration). The trick is knowing where each code lives and wh

Riffraff Diesel Valve Spring Compressor Tool for 1994–2003 7.3 Powerstrokes

Valve spring work on a 7.3 Powerstroke is not hard because the job is complicated. It’s usually a job done with the heads off, and with a large specialized tool. But if the truck runs fine, taking the