Just doing a bit of browsing and came across this.
http://www.electricsupercharger.com/index.htm 
theres a couple on ebay at the moment.

Anyone tried one of these or similar?
they say 4-6% improvement in hp at the wheels.
doesn't seem too bad for the money.

I'm looking for opinions on this product if anyone has used, or is using one.

I'll be fitting it to the 3.8l v6 in my kombi.
space restrictions limit using a mechanical supercharger without doing any body modification.

Sounds very RICE to me..... It isn't forcing the air into the cumbustion chambers only helping it into the air intake.

I can't see how there would be any BOOST after the injectors...

Yeh...looked into them ages ago. One model will guarantee a 1psi boost with there unit which can be fitted in series to give you 2psi. The only trouble is they are turned on at WOT and can only be run for a maximum of about 30 seconds. With the $$$$ you would spend it would be more economical to get the real thing or a turbo and at least have the power all the time. Having said that.. they do work but for the $$$ it is not worth the effort. Still a lot of development going on overseas..............

won't any other type of forced induction only increase pressure in the intake?
isn't that why turbo's and superchargers are termed forced induction.
Doesn't turbo charging or supercharging force charge through the injectors or carby (be it draw through or blow through) anyway?
Isn't this why with most mechanical supercharger kits, they also provide larger injectors?

they provide an explanation as to why they only work at WOT.
if you want more hp at half throttle, you simply put your foot down further and give it more throttle. till the throttle is wide open.
I think that you'd probably end up changing gears and backing off the throttle within 30 seconds of flooring it.
the only thing may be for highway use, cruising in 4th at WOT for a long period of time. then you'd be exceeding the speed limit anyway.

I looked into it years ago when A mate got one. Its almost a waste of time. it gives you a little H/power at first but it restricted the air flow on his car at 5.2rpm and this was his peak housepower rev. he couldn't get the computer to run it. I think I still have it in the shed, I will have a look tonight.
It was one like this

what do you think was the issue?
was it the type of engine, or something with the AFM?
was it an installation issue?
or was it just the unit itself?
they reckon that these things don't restrict airflow when they aren't spinning.
shouldn't the AFM automatically correct for the increase in airflow?

let me know if you wanna sell it.
I'd be interested to give it a try for the right price.


I'm tired of all these quick, easy cheap bolt on horsepower gains.
I want something that is easy to just bolt on, that is cheap and adds horsepower.

it was on a nissan:puke sr20 and I have no real idea why. but I was thinking that maybe once the car was at big rpm with WOT that the turbulance over the fan was slowing down the flow. what made me think of this was, you backoff and the hp would spike for a sec. Why? as I said no idea.

Yes I still have it here but only the fan and filter, it has two wires on it. I put it on a battery and it still works all the wiring harness stuff is gone. I have the pic of it and will post it tonight (need other computer) I will also ring my mate and see if he will sell it

I know the importer of these Chris ,they sell the hyclone as well .

Sorry not for sale........ Bugger. I will upload pic tomorrow but

I think I'll spend the money on getting a set of extractors for it instead.
Probably get the same performance gains, and look and sound better too.

These are an absolute waste of time.

To compress enough air to a high enough pressure to be of any use requires a fair bit of HP to do it.

A turbo gets the HP from the exhaust gases, and the backpressure on the engine.

A supercharger gets it straight from the crankshaft.

A crappy little electric fan ain't gunna have enough HP. If you did have a big enough fan, it would draw way too many amps to be useful.

A 1600cc engine at 5000rpm will need 4000L/min of air (assuming 100% volumetric efficiency). To compress that much air to even 5psi will require 3hp (pressure x volumetric flow = power). Then the electric motor and fan efficiency will mean you need to put about 6HP in to get the 3HP into the air.

So you would need a 5-6HP electric motor attached to a fan to get 5psi of boost. That's a big motor. And of course to run it on 12 volts will require nearly 400amps. I have you have a good electrical system and alternator.

Of course the ebay fans are much smaller than that, so can't make the boost and won't make a difference.

Here's another version
http://home.earthlink.net/~mfirehawkta/index.html 

I just went through that last link. That site is so funny, you'd have to be so dumb to believe anything on that site. here's my favorite stupid quotes.

but first, the dyno chart is also the biggest piece of crap I have ever seen. It's not even scaled to show you the curve properly. And the different curves are using different rpm ranges if it's supposed to be done in the same gear. I'd ignore the dyno.

I figured they must be a p.o.s. otherwise everyone would run them.
thinking about one of these now instead.
http://www.rodshop.com.au/superchargerholdv6.htm 

anyone here dealt with castlemaine rod shop?

Got a HQ to Chev Disk brake conversion kit from them. It works well.

Considering the 202 supercharger kit. Very cheap horsepower compared to my fastback. But not as much or as fun.

With respectto the ebay ones. Go read the feedback the seller has had on the said items. ON short marginal if any performance improvement. I agree the watts been ridiculous amps!

Dan I have a chip at home that was put on my V6 commodore when I took the blower off, it is the factory chip with refinements to the fuel and air ratios. It was done by awesome automotive. I was going to chuck it on evil bay. Let me know\

I have done 2 supercharged v6's (S'Trim Vortechs and intercooled) now and they go good but supercharging robs power because of the friction in the belt. Better results on turbocharging. Street machine magazine have just done a article about getting more output of your v6. last issue or the one before. If you want to talk about it let me know.

Heath

you're definately better off with a toyota SC-14 blower like the CRS kit. i've fitted heaps of them and they work well. if your interested view my 'how to' page at:
http://www.geocities.com/gazman_4/supercharger.html 

Ever seen the leaf blower supercharger's? Not too practical but they actually work.

http://www.youtube.com/watch?v=XkQTHhCjyc8 

My calculation of power and amps has been proven, here's a guy that makes electric supercharger kits that work;
http://www.turbomagazine.com/tech/0406tur_knight_turbo_electric_supercharger/index.html

Eaton supercharger driven by 3 modified 5kW @ 10,000rpm starters (can only be run for 15 seconds at a time due to heat).



He also has centrifugal style electric superchargers;


Requires some serious battery power
(attached)

I think you'd be pretty silly to install one of these.

I looked into these and found that generally the electric super/turbochargers on ebay generally only push air through at approximatley the same psi as normal induction would so there is no real benefit to fitting them. I do like the look of the ones bajawes shows, certainly would push through a lot more psi but I don't think you can beat 'old school styles'. They are affected by throttle changes whereas the electric ones would either have to be set to a certain rev range or decent mods need to be done to throttle and make it a type of fly by wire setup.