i just bought a 87 GN with 30,000 miles on it. What I noticed was that there was a chip already in it cause it red lines every gear. So far I changed my MAF and my O2 sensor. But when i turn it on it shuts right off and its been doing that ever since i changed my MAF. Also isnt air supposed to be blowing out when u remove the top rubber piece of the fuel regulator when the car is on. If so mine isnt doing that. Any suggestions.