Duvernay has the highest stock output production Quad 4: the 190-hp 1991 to 1992 RPO W41. The 1993 W41 lost 10 hp due to smaller exhaust ports. Photo: Kevin Davis via Wikipedia (CC-3.0) A 1992 ...
Increased performance and reduced complexity don't often go hand in hand. But in the case of the new Digital 6 Plus ignition control module from MSD (PN 6520), the benefits of an adjustable two-step ...