OK, I know there has been countless threads on the net about it already. Decide to do my own review of it to answer the question. Bought a kit from ebay.
http://www.ebay.com/itm/290635061663?ssPag...984.m1497.l2649
Thats the exact kit I bought. Bought 2 pieces 4" to 3" reducers from Man Exhaust today and install it. Wiring is quite simple. I wired it to the fog lamp relay thus I could turn it on or off thru the fog lamp switch.
Thus the big question is does it work? Is it snake oil? Will it do wonders?
Drove it around for ~100KM today as I was running some errands. In short, it does work to a certain degree. I ensure there is minimal placebo effect by turning with the switch on and off numerous times. Run at different RPMs, level of throttle etc.
The amount of power boost is very slight. Its very similar to turning off the AC on a small CC car to gain more power. It does what it is advertise to do. Gains of around 5-7HP. Thats all.
So, why aren't manufacturers using this device when its so cool??
Reliaibility and durability. These devices are not made to last at all. Housing is just fiber reinforced plastic and motor is a simple brush motor (though its using ball bearings). At best, it will last you around 600-800Hrs of use. After that you have to replace the carbon brushes or the housing. Fan blade is metal so it should last a while.
So, can it be made to work? Yes, it can. Provided there is proper R&D. Eg. cast aluminum housing. brushless motor (there are water cooled motors as well). Fan blades that are designed to deliver high air pressure etc.... Electric superchargers and hybrids are already under research right now
http://www.ebay.com/itm/290635061663?ssPag...984.m1497.l2649
Thats the exact kit I bought. Bought 2 pieces 4" to 3" reducers from Man Exhaust today and install it. Wiring is quite simple. I wired it to the fog lamp relay thus I could turn it on or off thru the fog lamp switch.
Thus the big question is does it work? Is it snake oil? Will it do wonders?
Drove it around for ~100KM today as I was running some errands. In short, it does work to a certain degree. I ensure there is minimal placebo effect by turning with the switch on and off numerous times. Run at different RPMs, level of throttle etc.
The amount of power boost is very slight. Its very similar to turning off the AC on a small CC car to gain more power. It does what it is advertise to do. Gains of around 5-7HP. Thats all.
So, why aren't manufacturers using this device when its so cool??
Reliaibility and durability. These devices are not made to last at all. Housing is just fiber reinforced plastic and motor is a simple brush motor (though its using ball bearings). At best, it will last you around 600-800Hrs of use. After that you have to replace the carbon brushes or the housing. Fan blade is metal so it should last a while.
So, can it be made to work? Yes, it can. Provided there is proper R&D. Eg. cast aluminum housing. brushless motor (there are water cooled motors as well). Fan blades that are designed to deliver high air pressure etc.... Electric superchargers and hybrids are already under research right now