randyvitaha

1986 951 when you give 'er hell, once you hit about 4000 RPMs at 15 lbs. the engine just feels like it shuts down. Mass air flow conversion with piggyback fuel controller, Dual port adjustable wastegate, WB O2 sensor as well. Mixture good when shut down occurs, the car just completely loses its *** and the car ran fine before after the conversion. Any ideas? ignition system?