Alright I took my 90 Crx Si & did a z6 swap. Z6 head, timing belt, gaskets, y8 HG, the whole nine yards. New plug wires & plugs (for the Z6, not the A6). After 3 weeks of work she's finally back together. The timing mark from the crank is lined up like it should be, and the cam gear is between 11 and 12 o'clock. Kept OBD0 and stok ecu for now, have a modded ECU which will go along with a RPM switch when I get it. Car turns over NO SWEAT. you can hear it trying to start. Gets fuel, gets air. ECU blinks out 15 times small blinks, which I assume is code 1. But my O2 sensor is on nly 5K miles old, and works fine! the ignition coil is only 3K old, and I know she puts out. The battery is new, and reads good on the voltmeter. I checked all connections like I should, and they are all good. HELP! suggestions please! Thanks Dr.