Author | Topic |

Location: Kita-Ku, Sapporo, Japan
Registered: January 2003
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Re: testing Jaycar HEI tach signal for Megasquirt
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Mon, 13 December 2004 03:57

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tried the HEI tach output.
seems to be pretty good up until 6000rpm, then i get a couple of small glitches.... i think i'll do an extended datalog (like 30mins... other ECU's would love to have that option ) and go thru and see how stable the signal is..
otherwise, it ill be resistors coil -ve.
looking at the schematics, it doesn't make sense to change R10 IF you have the Dave cap... the Dave cap is before R10, so it absorbs noise before R10. if i put resistor before dave cap (as i was testing) then it slows the charging rate of dave cap...
since i'm using microphone cable and RCA plugs for tach input, i'll just make a short 'resistor lead' so i can swap it out easily..
Cya, Stewart
ps, seems the KE15 tach is reasonably accurate.... up to 7500rpm anyway 
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| Subject | Poster | Date |
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testing Jaycar HEI tach signal for Megasquirt
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oldcorollas | Fri, 10 December 2004 05:52 |
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Re: testing Jaycar HEI tach signal for Megasquirt
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IRA11Y | Fri, 10 December 2004 06:09 |
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Re: testing Jaycar HEI tach signal for Megasquirt
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RA40Celica | Fri, 10 December 2004 06:15 |
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Re: testing Jaycar HEI tach signal for Megasquirt
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oldcorollas | Fri, 10 December 2004 06:41 |
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Re: testing Jaycar HEI tach signal for Megasquirt
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TA-022 | Fri, 10 December 2004 11:32 |
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Re: testing Jaycar HEI tach signal for Megasquirt
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oldcorollas | Fri, 10 December 2004 12:41 |
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Re: testing Jaycar HEI tach signal for Megasquirt
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RA40Celica | Fri, 10 December 2004 23:13 |
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Re: testing Jaycar HEI tach signal for Megasquirt
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oldcorollas | Sat, 11 December 2004 02:29 |
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Re: testing Jaycar HEI tach signal for Megasquirt
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oldcorollas | Mon, 13 December 2004 03:57 |
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Re: testing Jaycar HEI tach signal for Megasquirt
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gearb0x | Fri, 10 December 2004 12:52 |
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Re: testing Jaycar HEI tach signal for Megasquirt
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oldcorollas | Fri, 10 December 2004 12:58 |
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Re: testing Jaycar HEI tach signal for Megasquirt
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gearb0x | Fri, 10 December 2004 13:15 |
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Re: testing Jaycar HEI tach signal for Megasquirt
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RA40Celica | Mon, 13 December 2004 23:31 |
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Re: testing Jaycar HEI tach signal for Megasquirt
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oldcorollas | Tue, 14 December 2004 06:09 |
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Re: testing Jaycar HEI tach signal for Megasquirt
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oldcorollas | Tue, 14 December 2004 06:12 |