More Moose Power! All our Ford and Chevy IDI injection pumps are available with the Hypermax Smoke Puff Limiter! Perfect for increasing fuel savings and clearing up excessive exhaust smoke. A requirement in smoke puff regulated states. Order it at the same time as your pump if you would like us to install it and keep your pump warranty intact. Note - on GM applications, the cold advance solenoid is deleted by necessity. This is not an issue for most customers.