POWER STROKE
PERFORMANCE
HOUSTON
6.4 and 6.7 Power Stroke builds for F-250 and F-350. We're honest about the CP4 on the 6.7 — conversion first, always. Then compound turbos, EFI Live calibration, and the rest of the build.
We're Going to Talk
About the CP4.
Before Anything Else.
If you own a 6.7 Power Stroke (2011+) and you're planning any kind of performance work, the Bosch CP4.2 injection pump is the first conversation — not a footnote, not an add-on recommendation after we talk about turbos. The CP4 is a known failure point on this platform. Under elevated fuel demand from a stage tune, it fails. When it fails, it sends metal debris through your fuel rails, injectors, and tank. The repair is $10,000–$18,000 depending on how far the contamination traveled.
The CP4-to-CP3 conversion on the 6.7 Power Stroke costs a fraction of that and eliminates the failure mode entirely. We perform this conversion using S&S Diesel or Fleece Performance kits before any aggressive tune goes on a 6.7. That's not a sales position. It's what responsible performance work on this platform requires.
After the fuel system is addressed, the Power Stroke 6.7 is a strong performance platform. See the completed F-250 towing build for a real-world breakdown.
The 6.4 and the 6.7 Are Not
the Same Truck.
Ford ran the 6.4 from 2008–2010 and the 6.7 from 2011 to present — but they share very little beyond the nameplate. Different injection architecture, different turbo configuration, different emission system, different failure modes. We don't treat them as the same build conversation.
The 6.4 runs dual Bosch CP4 high-pressure pumps — the injection architecture is different from the 6.7's single CP4. Performance work on the 6.4 includes EGR system considerations that affect build longevity, and compound turbos are well-supported by the aftermarket. The 6.4 responds well to compound turbo setups and EFI Live calibration. EGR cooler failure is the known weakness on stock trucks — addressed as part of any build plan.
The 6.7 is Ford's in-house diesel design — stronger block, better injection architecture baseline, and a well-supported tuning ecosystem. CP4-to-CP3 conversion is the mandatory first step on any performance build. After that: EFI Live calibration, 6.4-style compound turbo capability on the 6.7 platform, FASS fuel system, and injector upgrades at higher power levels. The 6R140 transmission is a strong unit but has its own limits at elevated torque — we account for that in the build plan.
What the Power Stroke
Shows You Under Load.
The documented failure mode: elevated fuel demand causes the CP4 to cavitate and fragment, sending metal debris through the entire injection system. Repair cost exceeds the value of many trucks. The CP3 conversion eliminates this failure mode. First step on any 6.7 PS performance build. Full details on our fuel system upgrades page.
The factory EGR cooler on the 6.4 is a documented failure point — coolant contamination into the intake is the result when it fails. On any 6.4 build we assess EGR system condition as part of the build plan. EGR cooler failure on a neglected truck can cause significant engine damage that the performance work didn't cause but will get blamed for if the timing is wrong.
The 6R140 SelectShift is a better transmission than the 6.7's predecessors, but it has torque limits that a staged tune with a compound turbo pushes meaningfully. A valve body upgrade or built transmission is part of the high-power 6.7 build plan. Transmission upgrade details are on their own page.
The Order Matters
More Than the Parts List.
A Power Stroke build that goes out of sequence creates the kind of failures that are expensive and preventable. The sequence below is how we structure 6.7 builds — every step supports what comes after it.
The Power Stroke tune and fuel system deep dive page covers the specifics of the 6.7 build path in more detail. Bring the truck in and we'll build a plan specific to your platform and your power target.
Non-negotiable first step on any 6.7 PS performance build. S&S Diesel or Fleece Performance CP3 conversion kit. Eliminates the catastrophic failure risk before the tune loads elevated fuel demand.
Consistent fuel delivery and filtration at the inlet. FASS Titanium on every performance build after the CP3 conversion. Protects the new pump and the injection system long-term.
Platform-specific calibration for the 6.7 with the CP3 fuel system in place. Tow tune or performance tune depending on use case. Dyno baseline before, verification after. Tune details here.
S300 compound setup for the 6.7 is available and well-supported. Intercooler upgrade alongside. Tune revision written after the turbo is installed and on the dyno. See the turbo forced induction page.
Addressed at the build plan stage when the power target warrants it. A valve body upgrade extends the 6R140's durability under compound turbo power. Full build when the target exceeds the stock transmission's rating.
Power Stroke Performance FAQ
What F-250 and F-350 Power Stroke owners ask before the first consultation.
POWER STROKE.
DONE RIGHT.
Platform-specific Power Stroke performance in Houston for F-250 and F-350. We're honest about the CP4 before we talk about anything else. After that — compound turbos, EFI Live calibration, and fuel system work that holds up under real load. Book a consultation and bring the truck in.
