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Old 06-30-2001, 06:20 PM   #1
mgmetalworks
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Member#: 5494
Join Date: Apr 2001
Location: Hillsboro, OR, USA
Default Technical questions about ignition system

Does anyone on this forum know the answers to the following questions (engine is a MY98 2.2L):

-Is the coil a dual fire or quad fire coil? Or more to the point...how does the distribution of spark work? (not looking for a novel about the theory of coils and distributorless ignitions....just want to know if the coil fires two at a time or four at a time or some other pattern).
-How many degrees BTDC does the crank sensor send a signal to the ECU?
-How many degrees BTDC does the cam sensor send a signal to the ECU?

there isn't a Subaru service center around that knows the answers to these questions. I thought maybe someone like Shiv or Trey Cobb might know. Its worth a shot.

Thanks in advance,

MG
MG Metalworks
Hillsboro, OR
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Old 07-01-2001, 02:48 AM   #2
XT6Wagon
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04 STi
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Default

It uses a wasted spark system. So look at which cylindders have the pistion traveling towards the head at the same time. These two will recive sparks at the same time. one a the end of the exaust stroke, and the other at the end of compression stroke.
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Old 07-01-2001, 03:00 AM   #3
mgmetalworks
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Thats what I was after...Thanks!

mg
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