FULL DYNO RESULTS. POWER GAINS? ZEX, 6/71 & E85. We Put Power Adders to the test! Using a BPE 383 Power Adder long block, we ran the test motor NA, then with Zex Perimeter Plate Nitrous, then with a Weiand 6/71 Supercharger (at 3 boost levels), then finally with boost on E85. How much power was each worth?