Alan, the "bottle in a bag" takes dry kits one painful step earlier. It doesn't even boost fuel pressure, it just supercools the MAF to add fuel. I would start with a 55 dry kit and put it on a dyno. If the a/f looks good, swap to the 75 pills while on the dyno and check A/F again. As long as A/F is good and there's no detonation (dyno operator SHOULD be able to check plugs), keep the 75. If this is your only car though, may want to keep it at 55. Even at 55, you're still increasing HP by 50% which is no small gain.