Originally Posted By: holdorf333
It's still not going to be as fast as you like. You're far more likely to introduce all sorts of little issues to chase. I only know of two bolt-on superchargers (not my own) both on trucks, but they both have sensor-related gremlins that require consistent attention. Do whatever makes you happy.
I disagree. It is a very common modification to this generation Mustang. A good kit has all the gremlins worked out. And with enough intercooled boost, about 12 pounds or so, you've nearly doubled your RWHP.
Furthermore, the 4.6L engine is very tough. It's capable of reliably doubling it's HP without any internal modifications and no significant decrease in reliability or lifespan. I know of a few locals with well North of 250K miles on their older Mustangs, still running strong! Still on the original engine.
There are a large group of Mustang owners around here who regularly run solidly in 11 second quarter mile range on daily-driver, supercharged but otherwise stock 4.6L engines. Quite simply, that is "fast enough" to be a whole lot-o-fun!
Good kits range from the mid $3K to $6K level. Depending on type of blower. The centrifugal blowers are cheaper, produce excellent high RPM boost and easier to install. The positive displacement blowers produce boost from idle on up, and are ultra responsive at any RPM. But they are a heavier parasitic load at low RPM, and therefore some drivers don't like the "feel" of the engine under low loads. Much like having the AC on all the time on an underpowered car.
Both types will work well with either transmission. However, the Mustang and Corvette guys around here, tend to use centrifugal blowers with automatic transmissions.
The Roush positive displacement system is reasonably priced, perfectly tuned,
and makes major HP. 475HP as installed.
