[ianwright07]

if it was the vacum line it would do it all the time not after a few laps. unless it is for your evaporative emmisions canister and if its a race car thats just extra weight and wasted space take all that crap off and plug the vacum lines. if this is really just a race car there is little need for alot of little thigns i suggest losing. such as the fast idle solenoid and those blasted coolant lines that run thru the throttle body.