I am experincing detonation now at mild acceleration on the road test. I tryed it with the full time vacuum and the ported side, both gave detonation. This is with the initial set at 8deg. BTDC. IF I retard anymore than that, it stalls out when drive engaged. I dont understand why the vacuum caused a reduced idle and stalled at times when connecting it? I will put the wires back in their orginal spots and start over because the running condition has been worse since moving them. Try something else? Would anyone recommend repositioning the dist.? Which direction, to the right or to the left?