HEI in Mopar ECU casing

i swapped out the module and it now works. Starts up and runs fine, BUT, the spark is NO stronger than what the mopar box could do. If i undo the coil wire at the distributor and have someone crank the engine over, it only produces a yellow spark and i can only get the cable about an inch away from the block before the spark dissapears. From past GM experience, and from watching trailbeasts video, this thing should produce a blue spark and be able to jump MANY inches to ground...any ideas..?