So I don't know whats going on anymore. 65' Valiant with 225 Slant 6 ran great three days ago with points in it, would take half a crank to fire up. Now I got a 5 pin blue box ECU (By HiRev7500) with accompanied two wire distributor. Installed it, and I have an impossible time firing it up when its cold out, once its warm it will fire in a few cranks. Now, the accelerator pump squirts fuel great and the choke closes to about 1/8". Spark plugs are brand new NGK ZFR5N gapped at .045" with metal gasket removed. Coil is the original, but has 1.6 Ω across it so doesn't seem bad. Plug wires are 7mm and only a few months old. I pulled the cap and rotor outta the working points distributor and put it on the new one. With the cap removed I can grab the vacuum advance tube (Carb end) and suck on it and watch the advance plate move in the distributor, then release pressure and watch it snap back. I'm getting 12.39 Volts (Same as battery) at the "hot" side of the ballast resistor, and about 9 Volts on the other end. I've checked continuity through the whole wire harness and getting continuity through everything. I checked the the ECU was grounded right and double checked that I was getting continuity through pin#5 to ground (I was). When the car was running with new system, I set timing to 8 degrees BTDC with vacuum advance tube plugged on distributor end. I also rechecked the valve lash when the motor got warm with the new system (.022 Exhaust & .012 Intake). The slant has good compression and a nice, new, fast starter motor. Now I can not get the thing to fire up when it gets cold. I spent 20 minutes spinning it and it only caught for just a second. Yes I know, I should have done the GM HEI instead of this probably Chinese crap, but still. Any ideas cause I'm near the end of my rope with this?