Aeromotive 67705 BoostWorx Returnless Pulse Mod. Electronics Kit

Aeromotive Part Number: 67705
Legacy VaporWorx Part Number: PWKPM1500-SANP

Compatibility: Anywhere that a Gen5 Camaro/SS/CTS-V type fuel pump module is used and needs a stand-alone returnless control system.

This kit does not include the KPM1500 fuel pump. It does include the needed parts to convert the KPM1500 for higher pressure and/or use with a stand-alone returnless PWM control system.

The latest KPM1500 fuel pump from our Aussie friends is, in our opinion, the best high-power aftermarket fuel module available today. With twin Bosch PWM compatible OEM 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) 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 fuel pump 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 vapor lock/cavitation, excessive noise and pump wear, and large electrical system demand.
• The now integral 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 regulator. In the USA, we tend to use higher fuel pressures typically in the 60-65psi range.