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Megasquirt My first Megasquirt-powered RX7 runs!

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Old 09-30-05, 11:55 AM
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My first Megasquirt-powered RX7 runs!

Spark and fuel, fixed a few small problems with the LM1815 circuit I made (which has already been addressed on this forum) and the car started up! Not very well, mind you, but I've just got some work to do. Muythaibxr explained to me how to set timing, so I'll attempt to do that tonight or tomorrow night.

This car is on track for going to the GRM $2006 next year!
Old 09-30-05, 12:09 PM
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Congrats!!!

Let us all know how it goes and make sure you post your fuel/spark maps.
Old 09-30-05, 12:53 PM
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good job! glad to hear someone else has one running!

I actually have my spark/split tables posted... they're in .bmp format so they might be a bit big...

I got the split table from looking at stock split (found a file somewhere... n332.txt). I got the spark table also from looking at that, and advancing it a couple degrees all around. When tofuball and I get done with our rewiring, we're going to tune ignition using EGT... and I'm expecting several parts of the table to go up another couple of degrees.

Something I plan on doing before EGT tuning is to bring in max advance at 4k rpms. Anyway, here they are

These tables have at least 1000 miles on them:

Spark table:
http://www.speakeasy.org/~culverk/spark.bmp

Split table:
http://www.speakeasy.org/~culverk/split.bmp

Ken
Old 10-04-05, 10:13 PM
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I forgot to mention that I'm using the idle spark advance feature I added with the idle advance set to about 2 deg btdc with the throttle shut and the rpms below 900.
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