Mirenco, Grant Brothers Bring Salesman on Board in Toronto

    RADCLIFFE, Iowa--May 9, 2003--Mirenco, Inc., (OTCBB:MREO) and its new Canadian distributor, Grant Brothers Sales, will provide a full-time salesman to begin marketing Mirenco's products in the greater Toronto, Ontario area.
    Last month, Mirenco established its first-ever Canadian distributor for its diesel engine retrofit technology through Grant Brothers Sales, one of Canada's largest manufacturers' representatives for heavy-duty diesel and automotive parts. The two companies this week agreed to terms for a full-time salesman in Toronto, a metropolitan area of nearly 5 million people.
    "We are extremely pleased to have a salesman dedicated to selling Mirenco's emissions-reducing technology full time in greater Toronto," said Mirenco CEO Dwayne Fosseen. "We know this is an excellent market for Mirenco because of Ontario's progressive clean-air standards, which are among the strictest in North America."
    John Grant, president and CEO of Grant Brothers Sales in Mississauga, Ontario, shares that enthusiasm." We are excited for this opportunity to begin selling Mirenco's products full time through our established network in greater Toronto," Grant said.
    Ontario's Drive Clean program requires heavy-duty diesel vehicles to pass a strict clean-air opacity standard before license plates can be renewed. The Drive Clean program requires opacity of 55 percent or lower for 1990 and older vehicles and 40 percent or lower for 1991 and newer vehicles. Opacity measures the amount of light that is blocked by soot and other particulate matter in tailpipe exhaust.
    In April of 2004, Ontario's standards will get even tighter, with a maximum opacity of 45 percent for 1990 and older models and 35 percent for 1991 and newer models. And, the regulations get even stricter in 2005 to 40 percent opacity for 1990 and older and 30 percent for 1991 and newer. All school buses, regardless of model year, will have to meet the stricter opacity standards. Ontario's Ministry of the Environment proclaims that the 2004 emissions standards will be the strictest in North America for heavy-duty diesel vehicles.
    "These strict standards are great news for Mirenco, because our technology has been proven to substantially reduce particulate matter emissions for all types of heavy-duty diesel vehicles," Fosseen said. Mirenco uses the Society of Automotive Engineers J1667 opacity test in its vehicle management program, the same test used by Ontario's Drive Clean program.
    Mirenco's technology works proactively by significantly reducing the formation of soot in the engine. DriverMax prevents unburned fuel from going out the tailpipe as soot, by delivering only as much fuel as the engine needs through a throttle delay that can be programmed through a hand-held computer. Mirenco's system not only cuts emissions, it saves fuel and extends the life of the vehicle.

    About Mirenco

    Mirenco is a Radcliffe-Iowa-based company that specializes in vehicle management technology for improving fuel efficiency and reducing vehicle emissions in diesel engines.
    Additional company information is available at www.mirenco.com. Contact Mirenco at (800) 423-9903 or via e-mail at info@mirenco.com.

    Some of the statements made in this press release are forward-looking in nature. Actual results may differ materially from those projected in forward-looking statements. Additional information concerning Mirenco, Inc. can be found within Mirenco's filings with the Securities and Exchange Commission. Statements in this release should be evaluated in light of this additional information.