y pipe hitting floor....
I have heard that this type of banging can cause false KR,thus causing the computer to pull timing, is this true? 1) loosen all the attachment hardware on your Y-pipe and wedge something (a piece of wood is good) between the floor and the closest point of contact on the driver's side. Then tighten everything up and remove the "spacer". This can take some of the tolerances out and you may gain some clearance.
2) Consider installing poly motor mounts on both sides or at least on the driver's side only. I've found that these will dramatically reduce engine movement, which, of course, translates to Y-pipe movement.


