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Location:
Canberra
Registered:
May 2002
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Re: Admitting defeat: ECU Tuning questiongs
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Wed, 12 February 2003 01:27
 
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I havn't touched a microtech for 2 years, so I wont hazard a guess at the direct questions on pump values etc, but in regards to fuel/air mixtures, 14.7 is ideal on light load/cruise, but full load should be closer to 13.0:1 as a rough guide. you will also find that idle mixtures will probably give a better result at around 13.0:1, most cars dont like to be as lean as 14.7 when idling. Do you have some sort of mixture meter to read the ratios?
as for the coolant map, best advice i can give is that you're just gonna have to spend several mornings adjusting the values from cold start. you'll know if its too lean because the revs will hunt at idle, too rich and the engine will labour & blow black smoke out the exhaust. A mixture meter is not particularly useful for setting up these values, as the sensor will not be hot enough to read properly from cold start.
If its idling at too low a speed when cold, rather than idling with rich lean mixtures, then the only fix will be to fit some sort of manual air bypass to let air past the throttle body. microtech cant control the usual idle air bypass valves, and so most cars fitted with microtech end up with a shitty idle for the first few minutes after a cold start.
Hope this gets you started.
Cheers
Phil
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