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electric supercharger, worth it?
on a 03 protege would an electric supercharger at 5psi be worth it??
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Originally Posted by bluemazdaprtege
(Post 107894)
on a 03 protege would an electric supercharger at 5psi be worth it??
Edit: After reviewing the "Electric Supercharger" data, I can tell you there is a 100% probability that this device will never approach 1 PSI much less 5, even at idle. Said another way, you might as well crawl under your car and tear up three one-hundred dollar bills, that will get you as much of a performance gain as this device. :p FWIW, assuming you have the 130 hp 2.0 liter engine in your car, and assuming you did come up with a way to boost it by 5 PSI (i.e. mechanical supercharger or turbocharger), your power output would jump from 130 to 174. ;) |
the question isn't psi, it is cfm. the way that they get to advertise 5 psi is that the charger can pressurize and maintain 5 psi under certain conditions (ie; possibly a plastic bag or something of similar build with zero extra atmospheric pressure). an engine creates a vacuum that the charger would have to overcome in order to make pressure. that is where cubic feet per minute come into play.
a stock turbo on the average car runs at about 45 cfm @ 5 psi. for comparison, that would be enough cfm and almost enough psi to operate a high volume, low pressure paint system. that would mean that two of these things would have to produce enough flow and pressure to paint a car without losing any pressure at any point. having done all types of finishes, i seriously doubt that is possible. my tank-less HVLP system is about the size and shape of a squirrel-cage fan and it will even bog down if i run it somewhere kind of stuffy and stale. that thing will be operating under the hood of the car. think about it. |
This "thing" has been talked about on every car forum I have ever been on, including this one. I have only one thing to say about it: If it sounds too good to be true, it probably is. It's a wet-dream for racing video junkies caught out in the real world for once. Stay away from plastic junk claiming HP/MPG increases that only cost $35... the last price I saw these at... and that was down from well over $200. Even suckers catch on quickly. Don't be one of them. Learn before you are taken for your money. |
Those "superchargers" are not usually recommended for Mazdas, but I wouldn't recommend them for any car that I wanted to keep reliable and be able to use. There's a reason the price of these have come down so much and so fast. Take the hint. As far as "honing your intake" is concerned, I am all for port, polishing and matching the head if it needs to be removed anyway, but this seems to only be a good financial decision if you are racing it and trying to extract the last little bit of power from the engine. Again, I don't buy the "improved fuel mileage" hype or that it would make that much of a difference in a DD. 'Sounds a lot like sales hype to me. |
Originally Posted by dbmazda
(Post 108839)
Any PSI is better than stock, but the thing cost $350. Not worth it!
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... And it only works @ WOT!! The manual switch is installed under the accelerator pedal and is only active when the throttle is fully depressed. Every one I have ever talked to about these things says the same thing, Stay Away!! They don't work... at least not on modern ETB cars. |
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