car doesn't like 15 degree's. Get a bad stumble when giving gas. It likes 20 degree's. At 15 best vac i can get at idle in park is 7 inches in gear 3 to 4 inches's. Set at 20 i get close to 11 in park and around 8 in gear.

Last edited by Dougsmopars; 08/19/09 08:17 PM.