Aeromotive Part Number: 67706
Legacy VaporWorx Part Number: PWKPM1500-SA

Compatibility: Anywhere that a Gen5 Camaro/SS/CTS-V type fuel pump module is used and needs a stand-alone returnless control system. For vehicles with an OEM Fuel System Control Module, check our Ally kit here.

This kit includes the KPM1500 fuel pump modified with a high-pressure regulator, returnless PWM control system, and other modifications to make it work properly for most US based vehicles.

The latest KPM1500 fuel pump from our Aussie friends is, in our opinion, the best high-power aftermarket fuel module available today. With twin OEM Bosch PWM compatible pumps, fully re-engineered pump support system, robust venturi pump systems, integral safety overpressure valves, and a built-in anti-reversion/check valve, it almost has all of the features that make it very much like an OEM part.

Why almost, and why 1000fwhp and not 1500fwhp? VaporWorx is going to do you a solid and share the reality of this fuel pump, the engineering behind it, and why that matters. We're not just doing a copy/paste and re-selling an item, but instead sharing the engineering work and the solutions to make it work properly under high fuel pressures.

Let's get what appears to be the obvious out of the way. Yes, the KPM1500 is intended to be a direct fitment replacement for the Gen5 Camaro/SS and others of a similar type. One very nice feature that is often overlooked in this KPM design (nothing is shared with the OEM part, KPM designed the whole enchilada here) is that the outlet nipple has been strengthened to reduce the chances of breakage. It's a small but thoughtful upgrade.

VaporWorx has been testing and developing the supporting electronics and mechanical parts to properly support the KPM1500 for the American market since very early 2024. Why the American market? Let's first list a few characteristics of the as-supplied KPM1500:

• Both high-power Bosch pumps have no integral check valve. Due to the short height available in the Gen5/SS/CTS-V2 etc. type module, a traditional pump with a barb connection cannot be used. Since both pumps tie into a common manifold, if one pump is not running it will become a leak, hence making little fuel pressure. Both pumps running full speed requires 39A. Running both pumps full speed all the time may lead to overheated fuel, vapor lock/cavitation, excessive noise and pump wear, and large electrical system demand.
• The now integral KPM standard pressure regulator cracks at 350ksp/51psi and is fully deployed at 550kpa/80psi.
• In order to maintain the option of using the OEM fuel level sensor a ground lug on the hat is needed.
• Our Aussie friends tend to run low fuel pressures and very large injectors. Hence, the 350kpa/51psi cracking pressure regulator. In the USA, we tend to use higher fuel pressures typically in the 60-65psi range.

The VaporWorx version of KPM1500 replaces the low-pressure regulator with a high-pressure type. This allows pressure regulation like that in the Gen5/SS/similar OEM fuel module types. How much difference does this really make? How about a 37% increase at 65psi?

Why the difference in flowrates at the lower pressures? The 350kpa/51psi graph is an average of the flowrates from 20 KPM1500 pump assemblies while the 500kpa graph is from a single pump assembly. It is common to have +/- 5% flowrate differences between pumps.

The cure? Meet the VaporWorx PWKPM1500 pulse width modulation kit. This kit contains everything needed to drive the KPM1500 electrically in either constant/static or manifold referenced pressure modes. All it needs is battery power in, power to the pumps, a turn on signal from the ECM, installation of the included fuel pressure sensor, and attaching the stand-alone MAP sensor (for MAP referenced fuel pressure is desired.) Compared to running both pumps full speed at 400kpa/58psi the VaporWorx PressureWorx KPM1500 controller kit reduces power to the pumps by 71% during idle/cruise.

Since both pumps must run together in the KPM1500 fuel pump module, using PWM to slow down the pumps is very effective in keeping fuel temperatures down and relieving the electrical system of excessive load. Testing has shown that PWM control at typical idle/cruise pressure (60psi) and flowrates shows power reducing from 495w to 126 watts, a 71% reduction in power.

Just like a well tuned engine, fuel pumps under PWM operation all have a different sound. Like its predecessor, The KPM1500 is one the smoothest, quietest, and easiest to control systems that VaporWorx has ever tested for a system of this capability. Only the mid-2000's Ford Mustang returnless pump is smoother, but that is a light-duty single pump, and it's not much better. The KPM1500 just sings with the OEM Bosch pumps.

This kit is specifically made for the latest KPM1500, not the Streetfighter 1500. It is intended to be used as a stand alone control system. No additional relays, Hobb's switches, etc. are needed. For cars with a Fuel System Control Module/Fuel Pump Pressure Module/Fuel Pump Driver Module it is highly suggested to use a VaporWorx Ally control system. Please see the VaporWorx KPM1500 Ally kit.

Features of the VaporWorx PressureWorx KPM1500 include:

• A VaporWorx modified KPM1500 fuel pump module with high pressure regulator and wiring to make the OEM chassis wiring plug-and-play.
• Everything needed electrically to drive the KPM1500 fuel pump in a stand-alone arrangement (no fuel system control module).
• Approximate 71%+ reduction in power to the fuel pump during idle/cruise vs running both pumps full speed all the time. Practically eliminates vaporlock/cavitation caused by overheated fuel.
• Fully returnless. External inline filter required.
• 60A minimum continuous power rating in a compact controller package. Total size 4" L x 2.1" W x 1 5/8" H.
• Over-temperature shutdown with automatic reset that will operate indefinitely without damage.
• Short circuit protection that will operate indefinitely without damage.
• OEM Delphi/Aptiv connections for terminals, seals, and connector bodies where appropriate.