I'm currently setting up an '01 Miata engine for use by a recently completed MegaSquirt III with a 3X Expander. My question is a basic one unique to the Miata engine. This engine has what appears to be one ignition coil for two cylinders, one connected to cylinders 1 and 4 and one coil for 2 and 3. I'm assuming these are what's called "wasted spark" coils and as such can be connected directly to the 3X card.

If this is correct then Spark A should be connected to the cylinder 1 and 4 coil and Spark B should be connected to the cylinder 2,3 coil.

Am I missing something obvious?
Thanks in advance,
Roy

 

correct sir. you should follow what y8s has been doing with his and specially the flyback mod for the VVT.

 

Thanks Brain for the confirmation -

Where would I find Y8s' discussion of VVT?

Roy

 

maybe over at msextra.com and over at miataturbo.net

basically the vvt driver on teh ms3x needs a slight mod for the flyback or it overheats. Otherwise, I can help you with any other ms3 questions

 

Thanks Brain-
I found the discussion and the fix suggested by y8s.

Here it is if anyone is ever interested

http://www.msextra.com/forums/viewto...lyback#p279479

Cheers,
Roy

 

yeah its a simple mod.

 

Actually you may want to read this thread:
http://www.msextra.com/forums/viewto...enough#p309407

read from that post to the end.