So I pulled out my cobra that’s been sitting for around 4 years. Drained fuel filled up with premium. It ran great when parked but now it shakes when idling sometimes almost dies and when driving it drives fine if I’m light on throttle as soon as I’m wot it falls on its face and sputters and barely climbs rpm. I can hear the fuel pump running. I’ve pulled each plug wire and there all sparking on the coil pack. Rpm doesn’t really change when removing one at a time. Tried unplugging maf sensor no change also tried unplugging tps no change. No codes either