Best Blower For Your Mustang - Choose Your Weapon - Tech

So, Which Is The Best?
That depends on where you place your emphasis. Before purchasing a blower, you should ask yourself some important questions. Are you looking for maximum (peak) power production from your suitably built 5.0 or 4.6 Two-Valve motor? If so, you will probably be best served by the centrifugal design. If instantaneous boost response is more important, then you should lean toward either of the positive-displacement designs (Roots-style or twin-screw). There are obviously positive and negative attributes to each type of supercharger, but in the end the choice will likely come down to a great many more variables than just peak power.

You'll need to consider cost, kit completeness, ease of installation, availability, customer service, and-most importantly-tuning. Does the supercharger kit come with an ECU program designed to provide maximum safe performance on pump gas? Does the kit include the necessary injector upgrade, fuel-pump upgrade, or ignition amplifier? Once installed, how difficult is it to further increase the power output? Is it more involved than a simple pulley change (it almost always is)? We've only scratched the surface here in terms of considerations when choosing a supercharger for your Mustang or fast Ford, but know that all of them will offer a significant power gain.

Just be sure that the tune (air/fuel and especially timing) are spot on before putting your foot into the throttle. All too often owners bolt on the new power adder and shortly thereafter blow the engine, only to blame the part. Few ever recognize or admit the real problem was a poor tune and the owner's inability to realize it.

The great thing about supercharging is that it provides significant power gains regardless of the original motor. It doesn't matter whether you have a stock 5.0L or a wild 4.6L Cobra motor, adding a supercharger can increase the power output by 40-50 percent. Obviously, larger gains are possible, but make sure the motor is able to withstand the additional stress. Ford (or any manufacturer) doesn't often design blocks, connecting rods, and pistons to withstand double the original power output.

Whether the blower kit is a simple M90 from FRPP or an intercooled YS-Trim from Vortech, adding one to your Ford motor will yield impressive dividends. One convenient way to calculate the power potential offered by any supercharger is to take the power output of the normally aspirated motor and multiply it by the boost pressure as a function of atmospheric pressure. Since a normally aspirated motor runs at an atmospheric pressure of 14.7 psi (or 1 BAR), all you have to do to double the power output of the motor (in theory) is to double the pressure to the motor. Meaning that if your normally aspirated mod motor produced 300 hp, all you have to do to reach 600 hp is to double the pressure or supply 14.7 psi of boost using a supercharger. If you supply only 7.35 psi, you should see a corresponding power gain of roughly 50 percent since 7.35 psi is 50 percent of 14.7 psi. The simple math formula is as follows: Supercharged HP = NA HP x Boost Pressure/14.7 +1.