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RA40Celica Regular Location: Hobart Registered: June 2002	Re: testing Jaycar HEI tach signal for Megasquirt Fri, 10 December 2004 06:15 your triggering looks good with those high value resistors. I noticed the same effect but was happy so i didn't continue high than about 5kohm. I originally installed mine triggering off HEI tach signal, with standard r10 resistor. Car runs fine but gets false triggers at high rpm, resulting in the occasional doubling of the rpm. Next i tried triggering off the -ve coil terminal (still running HEI system). This cured the high rpm spikes but gave me trouble at high load/low rpm missing (cutting out all together). So next i lifted the R10 resistor upto around 4k (can't rememebr, something like this). This seems to fix my low rpm problems and i haven't had any trouble up in high rpm. Here's a datalog i took earlier (0-100km/hr in about 8.1seconds ), i haven't got one of my latest setup since some bastard stole my laptop. I think its smoother than this now, new points and the resistor helped a treat. The firmware version seems to have an effect on the triggering, megasquirt'n'spark-extra tends to behave differently i noticed. cheers Chris [Updated on: Fri, 10 December 2004 06:17] [Report message to a moderator]

	Subject	Poster	Date
	testing Jaycar HEI tach signal for Megasquirt	oldcorollas	Fri, 10 December 2004 05:52
	Re: testing Jaycar HEI tach signal for Megasquirt	IRA11Y	Fri, 10 December 2004 06:09
	Re: testing Jaycar HEI tach signal for Megasquirt	RA40Celica	Fri, 10 December 2004 06:15
	Re: testing Jaycar HEI tach signal for Megasquirt	oldcorollas	Fri, 10 December 2004 06:41
	Re: testing Jaycar HEI tach signal for Megasquirt	TA-022	Fri, 10 December 2004 11:32
	Re: testing Jaycar HEI tach signal for Megasquirt	oldcorollas	Fri, 10 December 2004 12:41
	Re: testing Jaycar HEI tach signal for Megasquirt	RA40Celica	Fri, 10 December 2004 23:13
	Re: testing Jaycar HEI tach signal for Megasquirt	oldcorollas	Sat, 11 December 2004 02:29
	Re: testing Jaycar HEI tach signal for Megasquirt	oldcorollas	Mon, 13 December 2004 03:57
	Re: testing Jaycar HEI tach signal for Megasquirt	gearb0x	Fri, 10 December 2004 12:52
	Re: testing Jaycar HEI tach signal for Megasquirt	oldcorollas	Fri, 10 December 2004 12:58
	Re: testing Jaycar HEI tach signal for Megasquirt	gearb0x	Fri, 10 December 2004 13:15
	Re: testing Jaycar HEI tach signal for Megasquirt	RA40Celica	Mon, 13 December 2004 23:31
	Re: testing Jaycar HEI tach signal for Megasquirt	oldcorollas	Tue, 14 December 2004 06:09
	Re: testing Jaycar HEI tach signal for Megasquirt	oldcorollas	Tue, 14 December 2004 06:12

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