MembersPage/HansK/SuzukiSwiftGTIMK (2007-05-09 12:45:22)

Installing VEMS V3.3 in a Suzuki Swift GTI 1,3 16v mk1 used fore rallycross.


I have made a adaptor from the original harness to the VEMS box + a new wire to the ignition-coil (disconnected the original) because it originally is mechanical-ignition.

http://www.vems.hu/files/HansK/Swift_GTI_MK1/megasquirt200705072029.msq

The box was mounted in one evening and all was working but the trigger turned out to have problems af hi rpm..

Here is the trigger-signal: (1:10 probe used and scope don't correct fore it)

IMG_1832.JPG

When running pin 5 on LM1815 to +V the trigger-signal starts dropping out when reaching 5-6000rpm..

http://www.vems.hu/files/HansK/Swift_GTI_MK1/datalog200705062004.xls

When running pin 5 on LM1815 open it gets triggered by spikes/noice at hi rpm.

http://www.vems.hu/files/HansK/Swift_GTI_MK1/datalog200705072004.xls

In both cases it gets worth with longer (you mean shorter?) dwell time.. when runnig 1.5ms dwell the problem is almost gone, but it looks like the dwell-time originally is rather long! (1:10 probe)

IMG_1820.JPG

Other ways to improve the trigger-signal


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