There are numerous different types and makes of electric superchargers available on the Internet. Some do what they claim to do while others are nothing short of useless. There are a few however that could be considered positively fraudulent. For example we’ve seen a couple of computer power supply fans mounted in a plastic housing masquerading as a supercharger. These fans couldn’t pressurise a matchbox let alone an engine yet the seller was asking $US300 per unit. The Internet is awash with legitimate traders and rouges all rubbing shoulders and all very difficult to tell apart. While we do not intend commenting on any of them directly there are ways to tell the good from the bad.
supercharger vendors will publicise various figures and statistics relating
to their products performance. These are of course difficult to verify and
may or may not accurately reflect the superchargers worth. An approximation
of an individual electric superchargers real performance can be obtained from
details of their current and voltage requirements. A supercharger is
essentially a pump and has to do work to pressurise an induction manifold.
They have to be a powerful pump as a huge volume of air needs to be
pressurised to keep up with an engines demand. Even the most efficient
electric supercharger designs need a substantial electric motor to drive them
and such a motor requires an equally substantial amount of electricity to
power it. Simply multiplying voltage (Volts) and current (Amps) together will
tell you how much electric power (
Whilst electric superchargers are a very cost effective and efficient performance enhancement they do have limitations. It is unreasonable to expect that a low cost electric supercharger will produce the same performance gains as a hugely expensive conventional supercharger. If they could match conventional chargers yet still only cost a tiny fraction of the price then electric superchargers would put conventional chargers out of business. Vendors who claim performance parity at vastly reduced cost are probably being less than truthful. There is one supercharger being widely advertised that claims to give 8psi boost from just 36W of electrical power. The laws of gas dynamics clearly state that this cannot be done as most electric superchargers would require at least 5000W (and this is highly optimistic) to achieve 8psi in a medium sized car engine manifold.
superchargers ability to generate boost reduces as engine size increases. It
has to do more work just to keep up with a large engines inherent capacity to
displace air. Furthermore a larger cubic volume requires more energy to
pressurise hence a correspondingly larger supercharger is needed just to
maintain the same mean gas pressure. Electric superchargers generally have a
lower volumetric efficiency than conventional chargers and are more sensitive
to engine capacity. An electric supercharger that can blow the socks off a
900cc minnow may barely be able to tickle a 5000cc beast (depending on its
total volumetric efficiency). This is an important aspect to keep in mind
when evaluating published performance figures and it is worth querying the
test conditions and engine used.
Gas flow is probably the most misunderstood and abused measurement of all. Describing gas flow would take another web page just to skim the subjects’ surface. The problem being that superchargers operate in a dynamic environment where by it is extremely difficult to separate flow rate attributed to the engine from that provided by the supercharger. Even simply quantifying the flow rate difference between a supercharged and naturally aspirated engine does not give an accurate picture as the mathematical relationship between the two is not linear. Measurements taken when the supercharger vents into an open space are meaningless, a large fan would outperform a supercharger in this test yet fans are for the most part unable to generate significant pressure. All in all we think it is best to leave these figures out completely rather than step into a quagmire of potential controversy for the sake of very little in the way of meaningful information. Boost pressures along with power and torque gains are the benchmarks that best describe a superchargers performance.
Some supercharger vendors will claim dramatic improvements in fuel consumption while simultaneously achieving large increases in engine power output. This is almost a contradiction of terms when large gains are said to be realised as a massive advance in engine technology would need to occur to make this possible. We contacted one vendor who claimed that a static piece of metal resembling a wind chime could instantly yield an extra 35 Hp and at the same time improve fuel consumption by 20 mpg. The seller was asked why none of the major manufacturers used this device to which they answered “the manufacturers don’t know about it yet”. A further question of ‘how is it that we know about the device but they don’t ?’ was never answered. We for our part find claims like this difficult to believe and would doubt the veracity of anything said by the claimant.
A good way to gain an insight into a merchants honesty is to simply ask them a question. An evasive answer or worse still no answer at all would lead to doubts about the products or merchants integrity. Answers to questions that read like an advert for the product are also likely to raise suspicions. Please feel free to ask us any questions about our electric supercharger by sending an email to email@example.com and we will answer within 24 hours. We are very reluctant however to comment on specific electric superchargers (other than our own) as we assume no right to the position of adjudicator in these matters.
Hopefully this page will help individuals recognise the various supercharger scams that are out there. If you have any information or tips you think should be added to this page then please contact us at firstname.lastname@example.org
More information can be obtained about our electric supercharger and all our other products by clicking the buttons below.
Please feel free to contact us at email@example.com if you have any further questions, concerns or require help with your project
GA Projects specialise in designing low cost projects that any practical individual with basic handyman tools and ability can build. We avoid the need for special machinery or skills (e.g. welding) and ensure all our projects are made from readily available parts and materials. All projects are easy to build and are carefully scrutinised for quality and safety. We supply comprehensive, illustrated plans and construction manuals to guide you through every step of the way.
Build a Solar Pool Heater for under $100 The project that got us started.
Kids Electric Go Kart This project is a synch for the home handyman or handywoman.
Discover electricity and basic electronics Comprehensive introduction to these subjects for just $6.99c
Build a Kids Ride On Army Tank Easy to build and cheap too, kids will love this one.
Build an entire Skate Park. Ramps, pipes, fun boxes and more
At GA Projects we individually select each link (no automated link farms here). We are a family orientated company that will not link to inappropriate material or companies pedalling unsuitable products (porn, drugs, gambling etc.) Should any such links slip through our nets then please let us know so that the offending material can be deleted.
Contact us at firstname.lastname@example.org
Note that all prices quoted are in US Dollars