C4 4+3 Overdrive Bypass This mod will bypass the ECM and allow \”on-demand\” overdrive operation (in any gear, at any speed, whether warm or cold). Disclaimer: I accept no responsibility for any malfunctions or damage resulting from this modification. Proceed at your own risk! This modification assumes your Overdrive is operating correctly, and all wires […]

For all you guys out there with blowers and turbos, listen up: You\’re getting ripped-off when you buy the silicon hoses from the blower manufacturers. Go to an 18-wheeler supply place, like Stewart & Stevenson, and they sell all the freaking silicon elbows you can imagine. Every angle, every size (up to 6\” diameter!), every […]

Enthusiasts that have installed long tube headers may find that their engines are running in opened loop because the O2 sensor is not heated to 600 degrees. This is especially true if the O2 bung is relocated to the collector. In the case of the Hooker 2149 header, the bung is located on the #7 […]

How to Upgrade Your Driving Lights by Lars Grimsrud SVE Automotive Restoration Musclecar, Collector & Exotic Auto Repair & Restoration Broomfield, CO Rev B. 5-16-02 This tech paper will discuss how to upgrade your early C4 driving lights. Later C4�s already have this upgrade from the factory. Overview & Procedure Have you ever been a […]

Best thing to do for no $$$ is to remove all the hoses/air tubes and the diverter box that go to the air pump and the exhaust manifolds, and all the associated brakets. You can cap off the manifold air tubes with 50 cent pipe caps from the hardware store. Removal of this alone will […]