Quoted from - MidNightRacing -
http://www.mitsubishi-forums.com/t1815-eba...perchargers.htmWell, as soon as I saw another "Electronic Supercharger" post on a board I
frequent, I was, as usual, annoyed. Companies believing that they can sell off
these fake products by quoting blatantly false information and making
outrageous claims that attempt to con the less mechanically inclined members of
society is ridiculous. Most of the time, I stick to my typical arguments of
pressure vs. airflow with regards to displacement, compressor efficiency, and
turbine speed. I'm going to do something a little different with you this time,
though. I have a few questions and a few comments about some material on your
site (http://www.esuperchargers.com/index.html) concerning the Jet Stream
Electronic Supercharger.
1. Your first claim: "The Jet Stream™ Electric Supercharger is capable of boost
levels up to 2psi!!" That's great. I doubt it is, but even so, wonderful.
You've essentially done nothing but provide me with more ammunition for my
later arguments. In and of itself, this increase in boost pressure is
meaningless to the more educated members of the car tuning world. Get some real
statistics and I will be glad to even consider this as anything less than a
logical fallacy.
2. "...immediately be capable of delivering a 5-20% boost in horsepower
throughout the entire RPM band GUARANTEED or your money back!" So, a 20%
increase in horsepower throughout the entire RPM range? You're trying to tell
me that you've discovered a device that for $80, will increase power that
dramatically? If you believe that, I doubt you're even capable of reading a
dyno sheet. In your response, please attach dyno sheets, along with a link to a
video of the dynamometer metering your test car. You won't have either, because
you're making things up.
3. "Gain up to 2psi equivalent boost, from 750cfm airflow" Ok, now we're getting
some more numbers. The problem is, those numbers are all messed up! Silly you.
You must be strapping these electronic superchargers on some pretty massive
engines and have gigantic fans inside these things to be able to move
approximately 53lbs/min of air through a motor! Wait, after reviewing your
previous claims, I think you need to increase your claimed power increase
numbers. 53lbs/min is typically good for around 450hp on a decent motor. You
really should start talking about 150% increases in horsepower; you'd get a lot
more business that way. Your claims are extremely faulty, as is your mastery of
the English language. Tiny electronic fans do not flow 750cfm of air at 2psi
pressure. Boost pressure increases in and of themselves do not mean jack squat.
Your CFM numbers are all off. Next claim.
4. "Superchargers capable up to 24,000rpm" What? 24,000rpm? Shaft speeds of even the largest, most efficient compressors are around 95,000-100,000 at full
pressure. Again, let's go back and review your claims. 750cfm @ 2 psi @
24,000RPM shaft speed? Nuh-uh. Not working. So, seeing as you are a "respectable" company, I'll assume you mean engine speed, since that is the only thing even coming remotely close to making sense in this equation. At an engine speed of 24,000rpm, which is essentially impossible in a street engine, this fake supercharger of yours would choke the life out of the motor. Even if your fan could flow 750cfm, a low-displacement (3.0L) engine running 24,000RPM with an assumed volumetric efficiency of 100% and a 1.137pressure ratio (aka, 2psi) would require 1446.35cfm of air a minute. That's almost twice as much air as you claim you can flow. Oops, wrong on both counts. Next claim.
5. "Not harmfull to your car in any way" How about when the little fins break off your supercharger and go careening down your intake path, only to be shattered and sent into the cylinders or get crammed somewhere in the intake runners? Or how about when your supercharger fails or overruns itself, knocking the air/fuel ratio off, sending your car into a detonation or rich mixture cycle that will destroy it very quickly? Ah, that's what I thought. It's BS.
6. "Increases your cars gas mileage by up to 10%" Please tell me this is a joke. If your device increases airflow by as much as you claim, there is no way in hell you are going to see an INCREASE in gas mileage. When you make more power via increased MEP in the cylinders, you lose gas mileage. It's as easy as that. This is such a BS claim that it was hard to stop laughing long enough to write this email.
Anyway, in closing, I'm going to make sure that everyone on every board I go to sees this email and knows your company is full of ****. Your product is fake, your ideas are fake, and your knowledge of the general dynamics of forced induction systems is fake. Either revise your information so it is correct (and provide flow bench results and real dyno graphs, not the fake ones from your site)or I can guarantee you your company is going to see a major hit in whatever sales you are already putting up. Understand that these claims are false and making them without a shred of reality of evidence to support them is wrong. Please respond to this email so we can get things straightened out quickly. Thank you.
Performance Chips/modules/electric Superchargers, Don't ask read this.
May 21 2008, 11:53 AM
