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Re: None

Wednesday, 07/16/2014 6:29:48 AM

Wednesday, July 16, 2014 6:29:48 AM

Post# of 119176
Interesting competitor email and website:

http://www.fuelsaver-mpg.com/commercial-systems/hydrogen-kit-for-semis

Best regards,
Mike

From: Customer Service
Sent: Monday, July 14, 2014 6:17 PM
To: Cburg
Subject: HHO Quick Tip

FuelSaver-MPG Inc.

HHO Quick Tip

I'm in Xi'an, China right now, working with an HHO company here. They have a factory with 30 workers making HHO systems. I'm here as an adviser and I"m helping them implement some technology that I have licensed to them. It's really been fun. The people here are very friendly.


But while working with their systems, a new datum popped out that I wanted to share with you. It has to do with EFIE installations, and a new discovery that can cause an EFIE installation to fail for an unknown reason.


They have a packaged system that sits in the trunk of the car. They were having trouble getting mileage gains on a car with this system, and asked me to help debug it. When I measured the signal wire coming into the EFIE, it looked correct, except the range was wrong. It ranged from -.15 volts to .535 volts or so on my meter. However, no o2 sensor can go below 0 volts, and the range should be from about .15 to about .85 volts or so. Something was amiss!


As it turned out, they were grounding the EFIE from the same ground wire that was grounding the PWM. The action of pulsing the cell from the PWM caused that ground to deviate by about .3 volts. When we ran a separate clean ground wire, bypassing the PWM's ground, we then saw the correct voltages in the range of .15 to .85 volts or so.


Grounds are not all created equal. In most cases a small difference like this won't matter to many electrical circuits. For instance, the wideband EFIEs wouldn't be affected by this difference. But in the case of a narrow band EFIE, the ground must be very close to the ground that the computer uses because the circuitry must compare the sensor's output to ground. If the grounds are different, then the measurements are different. In this case they were off by 300 mv.


So the moral of this story is to always run a clean ground for your EFIE, and not tap into the high current ground cable used for the pwm/cell.

Summer Sale Announcement

Get a jump on the new Summer Sale. We'll send out a separate announcement in a few days. But you can get a 20% discount on everything in the store by using the promo code Summer20 during the checkout process.

Have a great summer.

Sincerely,

Mike Kehrli
President
FuelSaver-MPG, Inc.
Better Mileage. Less Pollution.