Just wanted to clarify some issues. First, ATI does not supply or build MAFs with their Procharger kits. I run a Lightening MAF on my setup. Second, a little internet search will tell you that ATI builds the most efficient air to air intercooler on the market of those that are available with factory intercoolers. Are there some aftermarket intercoolers that are more efficient? Probably. The problem with intercooler efficiency is the front facia design on the 00-04 GT Mustangs. They are poorly designed when wanting to utilize an intercooler, so their efficiency is far from optimum. Now install a Cobra SVT nose (bumper) on your GT and you will probably gain upwards of 25% more cooling efficiency, which can translate into more hp. One other point is that the P1 and D1 blowers are gear driven and is the only centri gear driven blower on the market. This is one of the reasons that their blowers have less power surge than the others on the market. All the blowers out there have their pluses and minuses, but I think the info that we feed others who are looking to make a decision about purchasing one should be as accurate as possible. In all fairness, it's hard to be objective when you own a particular supercharger. Our comments tend to be subjective rather than objective because, afterall, no one would want to tell you that we spent 4K on a supercharger they didn't like.