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TauhuTauhu Occasional Poster Registered: November 2004	Re: 4agze twin coil ----> individual coils over plugs Thu, 08 December 2005 04:40 y is tht the spark on the exhaust stroke is weaker? the waste spark ignition system cant possibly do tht because the ecu doesnt kknow which cylinder is running the intake/exhaust stroke. the ecu gets the signal frm the crank angle sensor, knowing only the position of the pistons, not the engine cycle. ie: which 2 pistons are reaching the TDC, but not which piston is on the compression stroke and which is on the exhaust stroke. so 1 of 2 coils will spark both the cylinders with the same spark. mic, do u mean coil on plug system? if u're asking abt tht, it's different with waste spark system. for COP, there will be a cam phase sensor which can tell the ecu the location of the pistons and the cycle of the engine. let's say pistons 1 and 4 r reaching the TDC, the cam phase sensor is able to determine which of them is on compression and which of them is on exhaust stroke. so, the ecu will only send signal to the coil working on the compression stroke. [Report message to a moderator]

	Subject	Poster	Date
	4agze twin coil ----> individual coils over plugs	TauhuTauhu	Tue, 06 December 2005 13:12
	Re: 4agze twin coil ----> individual coils over plugs	thechuckster	Tue, 06 December 2005 15:23
	Re: 4agze twin coil ----> individual coils over plugs	TauhuTauhu	Tue, 06 December 2005 15:28
	Re: 4agze twin coil ----> individual coils over plugs	thechuckster	Tue, 06 December 2005 15:34
	Re: 4agze twin coil ----> individual coils over plugs	M.W.P.	Wed, 07 December 2005 04:56
	Re: 4agze twin coil ----> individual coils over plugs	TauhuTauhu	Tue, 06 December 2005 15:38
	Re: 4agze twin coil ----> individual coils over plugs	-gt-	Tue, 06 December 2005 23:58
	Re: 4agze twin coil ----> individual coils over plugs	mic*	Wed, 07 December 2005 00:52
	Re: 4agze twin coil ----> individual coils over plugs	Cool1	Wed, 07 December 2005 00:53
	Re: 4agze twin coil ----> individual coils over plugs	mic*	Wed, 07 December 2005 01:07
	Re: 4agze twin coil ----> individual coils over plugs	TauhuTauhu	Wed, 07 December 2005 03:13
	Re: 4agze twin coil ----> individual coils over plugs	mic*	Wed, 07 December 2005 04:18
	Re: 4agze twin coil ----> individual coils over plugs	thechuckster	Wed, 07 December 2005 12:55
	Re: 4agze twin coil ----> individual coils over plugs	mic*	Wed, 07 December 2005 22:54
	Re: 4agze twin coil ----> individual coils over plugs	mrshin	Wed, 07 December 2005 04:46
	Re: 4agze twin coil ----> individual coils over plugs	b1gb3n	Wed, 07 December 2005 05:54
	Re: 4agze twin coil ----> individual coils over plugs	TauhuTauhu	Wed, 07 December 2005 06:11
	Re: 4agze twin coil ----> individual coils over plugs	b1gb3n	Wed, 07 December 2005 06:47
	Re: 4agze twin coil ----> individual coils over plugs	mic*	Wed, 07 December 2005 08:15
	Re: 4agze twin coil ----> individual coils over plugs	TauhuTauhu	Wed, 07 December 2005 13:12
	Re: 4agze twin coil ----> individual coils over plugs	thechuckster	Wed, 07 December 2005 13:37
	Re: 4agze twin coil ----> individual coils over plugs	Henn	Thu, 08 December 2005 03:01
	Re: 4agze twin coil ----> individual coils over plugs	TauhuTauhu	Thu, 08 December 2005 04:40
	Re: 4agze twin coil ----> individual coils over plugs	thechuckster	Thu, 08 December 2005 05:36
	Re: 4agze twin coil ----> individual coils over plugs	mic*	Thu, 08 December 2005 07:42
	Re: 4agze twin coil ----> individual coils over plugs	M.W.P.	Thu, 08 December 2005 07:53
	Re: 4agze twin coil ----> individual coils over plugs	mic*	Fri, 09 December 2005 02:04
	Re: 4agze twin coil ----> individual coils over plugs	M.W.P.	Fri, 09 December 2005 23:19

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