I think I got the xjs running about as good as I can get it with a 10 year old holley with an out-of-box tune. Probaly doesn’t help that it has the smog era ramhorn manifolds and one of the rear brakes is dragging.
I think I got the xjs running about as good as I can get it with a 10 year old holley with an out-of-box tune. Probaly doesn’t help that it has the smog era ramhorn manifolds and one of the rear brakes is dragging.