electric supercharger

[matuva]

Hello everybody

What do you think of this : Kia Turbo Supercharger Sedona Spectra Sportage Rio Opti: eBay Motors (item 150451596573 end time Jul-03-10 21:01:13 PDT)

Is it worth every penny or just snake oil ?

[Bex]

Our cars are calibrated for a specific air to ratio (14.7 to 1), which is governed by the ECU and o2 sensor. When you add more air, it causes the car to run lean. Short answer...stay away from these things. You have a 95 hp engine, no? What can you possibly gain other than bad running engine, freaked out ECU and short engine life. Maybe you will get somewhere 5 minutes faster, but at the expense of your engine. A bit more on page 2 of this post:
http://www.suzuki-forums.com/suzuki-...ocharge-2.html

[fordem]

Worth every penny

Before you click on buy it now - why not look around some more and see what a real supercharger will cost you - $2000~3000 plus -and figure out how much boost that $43 bilge ventilator will give you.

By the way Bex, not to worry - the ECU will sense (through the MAP sensor) the additional air and compensate for it - it can probably handle ALL the air that vent fan can push

[matuva]

They claim for a 2-3 PSI boost, +25% power and say that will work with no problem with the MAF sensor involved

[ack]

RIPOFF!

Think about it:

The electric supercharger is driven by the battery. It operates at a constant speed (at least I don't see anything that looks like a servo mechanism that adjusts the "blower speed" to the throttle position...) Therefore, at high RPMs, the blower actually would inhibit the flow of air into the engine!

Cool dyno graphs do not mean anything without the name of the person/company that generated them for you to call for verification. The advertiser of this product does not count as a reliable source, BTW...

There is NO WAY that a $43 squirrel-cage blower can come close the the performance of a real exhaust gas-driven turbocharger that provides more boost as the engine RPMs increase.

If it WERE true, you'd find electric turbochargers as an OEM option on vehicles!

[kick_fix]

1psi = 6hp. so 3 psi is 18hp, so do you believe it.?

remember bugs bunny and the fan sitting on the deck of a sail boot and it goes like H3LL.
same deal.
ask for independent proof of 3psi boost at 5000 RPM.
show me , im from Missouri.
proof, , dont take rocket science, just test it on a dyno and prove it.

just be sure he dyno has accuracy in of less than 18HP resolution. some dont.
same temp, same baro , same humidity, all things same for both tests.
gets harder huh?
or your just whistling in the dark.

[kick_fix]

i you want i can send you to MIT engine department and you can
run he simulator for how much HP it takes for a turbin to make 3psi boost.
this is easy.
and then you show me how that little motor can make this HP on the Turbin shaft.

first show the math before doing any experiment. why waste time and effort chasing a dream if the physics fails basics. (but do go ahead we will watch), grin.
power in , power out. and the losses.

if you need a good book on turbos that has how chapter at the end for the math.
i have one.
its called.
Turbo Charging Performance handbook by, Jeff Hartman(i have all his books)
see chapter 10. pg 216

The shaft power required by any fluid mover is the pressure rise multiplied by the volumetric flowrate divided by the efficiency.

but, each centrifical pump has different specs.
so you need the pump curves to determine the truth, and i bet those are his little secret.
un like real turbo's this is published by Garret.(HoneyWell)