ok people hang with me. this is my first time with the post.i have a 04 ford f250 6sd. i have a few mod done to it. I,ve got boost & pry. gauges with CUSTOM SCT TUNES, COLD AIR INTAKE, 3.5 DOWN PIPE WITH 4" OUT THE BACK.I HAVE ORDERED MSD DIGITAL PROPAIN FOR IT.NOW I CAN RUN 1/4 IN 14SEC.114MPH.IT DOES 0-60 IN 5.3SEC.DOES ANY ONE KNOW HOW MUCH THE PROPAIN WILL HELP ME?THE GUY TOLD ME IT WILL RUN MUCH BETTER BECOUSE MY TUNES SMOKES LIKE FREIGHT TRAIN.SAID IT WOULD BURN THE EXTRA FUEL TO GET MORE POWER. SO THANKS FOR THE HELP :bang