Hey guys. I have finished my AE86 engine swap. Theres a us red-top big port in there now but the problem i have is that the car stalls. The car will start no problem, like turn the key and it's on then after a second or two it will start to bog down, unless i have the throttle open at least half it will stall. Even with the throttle open it bogs then brings it back up to about 1300-1500 then bogs down, sometimes i can keep it doing this, sometimes it just stalls. any thoughts?