The 2012 Boss 302 is a very special car just as it rolls off the assembly line. I can tell you from experience that these cars are fast and handle very well. The Boss 302 doesn’t really need anything as it sits for the average weekend warrior at a track day or to act as a daily driver.
As an enthusiast I can certainly understand when Andy Caufield decided stock just wasn’t enough for his shiny new Competition Orange Boss 302 (Competition Orange is the fastest for the record). I can certainly understand the need for more. My own Boss isn’t stock any more either, but I didn’t go as extreme as Andy went with his.
Andy rolled his box stock and pristine Boss 302 through the bay doors at Evolution Performance and the guys went to work on his car and when it was over Andy has a different beast altogether. The baseline for the car was 366 WHP and 328 WTQ on a Mustang dyno. Those numbers are right in there with what you expect from a stock Boss 302.
After the stock dyno run, the gang at Evolution Performance hooked up with some sponsors and went to work transforming the stock Boss 302 into the first supercharged Boss 302 around. It’s worth noting going into this that Andy’s engine and transmission are box stock internally, and the tuning was done by Mustang tuning legend Jon Lund. All the tuning was done using C16 race fuel.
Evolution ripped Andy’s ride apart and started the teardown to install a massive Kenne Bell Mammoth 2.8 Twin Screw supercharger kit complete with an intercooler. There are a few caveats for Boss 302 purists in this story. The first is that naturally the installation of the KB blower meant that Andy had to give up that sweet Boss 302 intake. On the real Boss 302 cars, that intake is the only place you find the serial number of the car. Andy’s car is #0127; the good news is Andy did get to keep all those stock parts removed.
The only other major modification to install the KB blower was the need to notch the inside of the fender well to clear some of the blower ducting. That would be the only modification for this blower install that couldn’t be undone easily. If you follow the Mustang world, you know that the Boss 302 already has forged internals that are made for high RPM work. Those forged internals also make this engine particularly well suited to boost even though the roadrunner engine has the same 11:1 compression ratio as the Coyote 5.0.
After the install was complete and Lund applied his tuning prowess to the car Andy ended up with a pavement shredding 783 WHP at 18psi using C16 race fuel. It seems the only thing that kept this Boss from putting even more power to the ground was the factory fuel system was unable to keep up with the blown mills thirst for fuel even though the car was using the KB Boost-a-Pump and 75# injectors. Add a higher output fuel system and Andy could push this beast even further. At a more reasonable 11psi, the Boss 302 put down 630 WHP.
Andy has caught some heat from a few Mustang fans for his choice to mod the Boss 302 away from its NA roots and all I can say to Andy is when the haters hate, go Cee Lo Green on ’em. If you are sitting there thinking you would love to have a Boss 302 with this sort of power that has been featured in a magazine, maybe you can. Andy has been eying a Boss 302 Laguna Seca and apparently has the wife’s approval to pull the trigger assuming he can shed his current Boss 302. Here is your chance people, hit Andy up on any of the forums he frequents if you are interested. if you wonder what a blown Boss 302 would sound like, Andrew has a video on Facebook.