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rmccomiskie · 03-23-2009, 10:09 AM

The 1988 Audi 80 should have a K-Jetronic continuous fuel injection system. The injectors are not pulsed on and off. Rather, they remain on and the flow is varied. It is possible that the ECU has a fuel flow output signal because most Audis had a trip computer as an option. For example, my 1990 Audi 200 has a trip computer and uses an ECU signal for fuel flow. Some research into the signals provided by the Audi 80 ECU is necessary. If a fuel flow signal is available, the MPGuino could be used.

An interesting explanation of the K-Jetronic is here http://www.scribd.com/doc/3215544/Bo...ection-systems on Page 85.

According to AudiWorld (http://www.audiworld.com/model/, the U.S version of the 1988 Audi has CIS-Motronic engine control for the 4 cylinder engine and CIS-E III engine control for the 5 cylinder. The CIS (Continuous Injection System) is the one I mentioned above.

03-23-2009, 10:09 AM	#4 (permalink)
rmccomiskie EcoModding Lurker Join Date: Aug 2008 Location: Massachusetts USA Posts: 84 Ziggy - '95 Audi S6 Sedan Manfred - '97 Audi A6 Quattro Sedan 90 day: 20.61 mpg (US) Clarabell - '03 Audi A4 Quattro Avant Sherman - '98 Audi A6 Quattro Avant Cab - '96 Audi Cabriolet Thanks: 0 Thanked 2 Times in 2 Posts	The 1988 Audi 80 should have a K-Jetronic continuous fuel injection system. The injectors are not pulsed on and off. Rather, they remain on and the flow is varied. It is possible that the ECU has a fuel flow output signal because most Audis had a trip computer as an option. For example, my 1990 Audi 200 has a trip computer and uses an ECU signal for fuel flow. Some research into the signals provided by the Audi 80 ECU is necessary. If a fuel flow signal is available, the MPGuino could be used. An interesting explanation of the K-Jetronic is here http://www.scribd.com/doc/3215544/Bo...ection-systems on Page 85. According to AudiWorld (http://www.audiworld.com/model/, the U.S version of the 1988 Audi has CIS-Motronic engine control for the 4 cylinder engine and CIS-E III engine control for the 5 cylinder. The CIS (Continuous Injection System) is the one I mentioned above. Last edited by rmccomiskie; 03-23-2009 at 09:47 PM..