My targa LX has alot of problems. First problem is slow acceleration. Second is a low top speed. Its been going around 25-30 mph with a bi-turbo pipe. 3rd, Its difficult to start, has to be choked every time and if i accelerate too fst it dies. Last problem is when i took of my exhaust to clean it there was like gas dripping out of my exhaust port which i find strange. This all happened rather suddenly. Have cleaned the carb several times and tightened head bolts to 10lbs of torque. Now im lost, Help.