jason lebreton Posted June 17, 2008 Report Share Posted June 17, 2008 have the v3-4 subaru base map on a ej20tt (ej20h) motor base map is unchanged and master fuel is set at 8ms also on thid engine what would be the correct dwell time it is currently at 2ms cheers Quote Link to comment Share on other sites More sharing options...
Simon Posted June 26, 2008 Report Share Posted June 26, 2008 You would need to get that dell up a bit assuming you are running V3/4 coils. Try 3.5 to 4ms Check that the MAP sensor is reading correct and hooked up. It should read 100ish KPa at key on and then much lower when engine idling. Is it rich right through? or is it rich at the bottom end and leaning out up top? The base map is only a starting point, a full tune must be done. Quote Link to comment Share on other sites More sharing options...
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