ls1 and similar smart coils: how are they fired?
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0). For tuning/troubleshooting questions, please attached a datalog and your MSQ file to your post.
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
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flyguyeddy
- MegaSquirt Newbie
- Posts: 31
- Joined: Thu Sep 16, 2004 11:25 am
- Location: central illinois, USA
ls1 and similar smart coils: how are they fired?
I want to put ls coils on my bike. Are they fired just like a standard coil, but with a low current 5v signal? If i were to wire them to my ground switched ign module with some kind of 5v regulator in the switched lead to the coils, would that work out alright? Im keeping stock ign and microsquirting the bike.
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Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: ls1 and similar smart coils: how are they fired?
They need a 5 volt pulse. See this link for dwell time and other details:
http://www.megamanual.com/seq/coils.htm#ls1
http://www.megamanual.com/seq/coils.htm#ls1
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flyguyeddy
- MegaSquirt Newbie
- Posts: 31
- Joined: Thu Sep 16, 2004 11:25 am
- Location: central illinois, USA
Re: ls1 and similar smart coils: how are they fired?
How do i limit dwell from the stock ign mod if its higher than 8ms?
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Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: ls1 and similar smart coils: how are they fired?
Trigger them from the Microsquirt - I don't think there is a good way to trigger them from the stock ignition module.
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flyguyeddy
- MegaSquirt Newbie
- Posts: 31
- Joined: Thu Sep 16, 2004 11:25 am
- Location: central illinois, USA
Re: ls1 and similar smart coils: how are they fired?
My particular engine is a v4 with a 180 degree crank. I need 4 ignition drivers with this bike, thats why im keeping the stock ign module. Plus the crank pickup is weird, and i cant change it because its built into the starter clutch mechanism. I was thinking maybe a 555 timer set to trigger a countdown from when the stock ign mod triggers, count down how much needs to be subtracted then trigger rising edge of coil pulse.