rcsuperchargerkits web store FAQ section

Gains on stock 4 cylinder to heavily modified 8 cylinder engines have yielded 10-19% increases. That's 20-45HP depending on your base flywheel HP. The supecharger with its 20-45HP adds to ALL OTHER MODIFICATIONS as well.

Yes, the small increases of air density are well within the limits of most modern fuel injection fuel system, basically in the same way your engine would respond if you were traveling at high altitude where you loose HP. Here the fuel air metering system is able to respond by sensing the change in density via the mass air flow sensor, air flow meter , or manifold pressure sensor, and keep mixture levels correct.

No, most manufactures have done everything to make inlet ducts to get air into the engine. The problem is that because of the path the air has to take, by the time it gets to your throttle body, the air doesn't have enough pressure and speed to add any ram pressure to your intake system. Even at speeds of 80 mph, no ram effects can be measured with an almost perfect inlet system (i.e. less than .08psi). At 160 mph , that pressure goes up to .36psi., that's it!! Horsepower robbing vacuum in most air boxes is present due all sorts of restrictions as we cant have dragster style hood scoops on street cars because we would not be able to see over them!

Filters, inlet turns, diameter reductions and obstructions of the intake system create pressure drops depending on the restriction, resulting in vacuum in the air box (less dense air). Using a sensitive pressure gauge, this vacuum can be measured under W.O.T. either statically on the dyno, or on the track as we did.

Every 40 degrees makes a difference of 6% HP. The pressure would have to rise 1PSI for this gain in HP. Conversely, the air pressure could drop 1PSI at altitude and the losses would be similar.

No. Since the supercharger is over 3 inches inside diameter, even with the motor in the center, and its axial blade design, the supercharger flows the equivalent to a 3 inch diameter free-flow intake tube. Also at part-throttle conditions, this not a factor because the flow rates under part throttle condition are much lower as well.

No, the max current draw is 60 amps for the supercharger. This is as much as a high powered stereo, headlights, electric radiator cooling fan, or the starter motor on your car. Most car batteries with over 200 cold-cranking amps can handle draws of over 100 amps while the engine is running with no problems. We have even tested the supercharger on motorcycle electrical systems with no problems. The supercharger generates up to 45 hp gain from drawing over 1hp (831watts) directly from the battery. This has been verified on the dyno and with Volt Meters and Amp Meters. Charging systems work base on voltage drop of the battery, so the burden of the current draw really depends on the condition of your battery. Most batteries in good condition see very little voltage drop for short duration current draws of 60 for 10 to 15 seconds (full-throttle operation of the supercharger).

Yes, it makes what you have better. Preliminary tests have shown the best results on modified intakes with aftermarket intakes and filters. The supercharger adds to any other modifications you have made, or will make to your engine.

No, the supercharger system is designed to work with any internal combustion engine, new or old. The low level of boost is safe for all engines and will not provide any major additional stresses on the engine that wouldn't already be happening at full-throttle operation. If anything was to enter the fan and damage it , a metal safety screen is included on the exit of the fan to assure no components enter your engine... no matter what the event... ever.