LS1 Coil Packs - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Engine Performance This section is for discussion on all engine building related questions.
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 01-09-2011, 04:18 PM   #1
Elite Member
Thread Starter
iTrader: (13)
 
Join Date: Dec 2009
Location: Fraser Valley, British Columbia
Posts: 2,502
Total Cats: 13
Default LS1 Coil Packs

I am in the process of converting to LS1 coils from my Toyota COPS.

From the research I`ve done, the LS1 coils fire on 5v just like the COPS. So simple question. If I wire up the LS1 coils exactly the same as the COPS, all I `should` have to do is set my dwell to 5.5-6.0 or so. Or will some changes need to be made on my board. It seems like there were some posts about changing out the pull up to something with a lower resistance.

Also, has a recommended cranking dwell been figured out for these coils yet.
falcon is offline   Reply With Quote
Old 01-09-2011, 04:41 PM   #2
Elite Member
Thread Starter
iTrader: (13)
 
Join Date: Dec 2009
Location: Fraser Valley, British Columbia
Posts: 2,502
Total Cats: 13
Default

I found this on Megamanual...
Name:  123345.jpg
Views: 747
Size:  49.2 KB
I imagine if I follow this wiring, all should be good.
falcon is offline   Reply With Quote
Old 01-09-2011, 06:30 PM   #3
Elite Member
Thread Starter
iTrader: (13)
 
Join Date: Dec 2009
Location: Fraser Valley, British Columbia
Posts: 2,502
Total Cats: 13
Default

So it looks like the one difference between the LS1 and the Toyota coils is the extra ground on the LS1 coil and the tach signal on the COP.

Name:  1.6L_COP_Schematic.jpg
Views: 713
Size:  37.0 KB

How would the wiring change when going to the LS1. Would the sense ground go to an ECU ground pin, and the regular ground just to the head or something.

What would happen to the blackwhite and yellowblue wires that go to the tach signal on the COPS
falcon is offline   Reply With Quote
Old 01-10-2011, 10:26 PM   #4
Elite Member
Thread Starter
iTrader: (13)
 
Join Date: Dec 2009
Location: Fraser Valley, British Columbia
Posts: 2,502
Total Cats: 13
Default

anyone?
falcon is offline   Reply With Quote
Old 01-10-2011, 10:30 PM   #5
Senior Member
iTrader: (5)
 
Join Date: Jan 2008
Location: Central, TX / Bay area, CA
Posts: 1,272
Total Cats: 3
Default

Why are you switching?
Gotpsi? is offline   Reply With Quote
Old 01-10-2011, 11:03 PM   #6
Senior Member
 
Join Date: Aug 2010
Location: Maumelle, AR
Posts: 618
Total Cats: 2
Default

Ideally you want to use the tacho out from the ecu, there are other ways though... What ecu are you using?
ianferrell is offline   Reply With Quote
Old 01-10-2011, 11:10 PM   #7
Elite Member
Thread Starter
iTrader: (13)
 
Join Date: Dec 2009
Location: Fraser Valley, British Columbia
Posts: 2,502
Total Cats: 13
Default

Quote:
Originally Posted by ianferrell View Post
Ideally you want to use the tacho out from the ecu, there are other ways though... What ecu are you using?
MS1... not sure if it even has a tacho output?

Quote:
Originally Posted by Gotpsi? View Post
Why are you switching?
Just want to try something different.
falcon is offline   Reply With Quote
Old 01-10-2011, 11:28 PM   #8
Senior Member
 
Join Date: Aug 2010
Location: Maumelle, AR
Posts: 618
Total Cats: 2
Default

I kinda doubt ms1 has support for tacho output... Time to upgrade to ms3 w/ ms3x and run full sequential The 96+ cars generate the tach signal from the ecu instead of from the coils, you might read about what those ppl do.
ianferrell is offline   Reply With Quote
Old 01-10-2011, 11:53 PM   #9
Elite Member
Thread Starter
iTrader: (13)
 
Join Date: Dec 2009
Location: Fraser Valley, British Columbia
Posts: 2,502
Total Cats: 13
Default

To make the tach work with the MS1 you need to jump two wires in the diagnostic box with a 1k 1/4watt resistor. Perhaps that wire would be a place to get the tach from?

Here's the thing though. Do they actually need the tach output operational? The Toyota COPS don't use a tach wire at all.
falcon is offline   Reply With Quote
Old 01-11-2011, 12:08 AM   #10
Senior Member
 
Join Date: Aug 2010
Location: Maumelle, AR
Posts: 618
Total Cats: 2
Default

Those tach outputs from the coils usually drive the dash tach.
ianferrell is offline   Reply With Quote
Old 01-11-2011, 12:47 AM   #11
Elite Member
Thread Starter
iTrader: (13)
 
Join Date: Dec 2009
Location: Fraser Valley, British Columbia
Posts: 2,502
Total Cats: 13
Default

So if they don't have them, I'm screwed. Great. Maybe I'll stick with the COPS after all.
falcon is offline   Reply With Quote
Old 01-11-2011, 01:57 AM   #12
Elite Member
iTrader: (24)
 
Join Date: Jul 2007
Location: Cypress, TX
Posts: 3,778
Total Cats: 35
Default

Wait, What? I've been lurking here because I have a set of LS1 coils that I'll be putting on my car. It shouldn't be too hard to get a tach output using MS1. At least according to this thread. https://www.miataturbo.net/showthrea...s1+tach+output
Bryce is offline   Reply With Quote
Old 01-11-2011, 02:01 AM   #13
Elite Member
iTrader: (5)
 
Join Date: Oct 2007
Location: Canton, Ga
Posts: 1,707
Total Cats: 19
Default

the 96-97 MSPNP drive the tach from the ECU, and there is no funny firmware tricks going on, so I don't see why a standard MS1 could not drive a tach...
Stealth97 is offline   Reply With Quote
Old 01-11-2011, 02:10 AM   #14
Elite Member
Thread Starter
iTrader: (13)
 
Join Date: Dec 2009
Location: Fraser Valley, British Columbia
Posts: 2,502
Total Cats: 13
Default

I'm sure it's easy. But I can't do it cause I don't touch that kind of stuff. I'll just keep my COPS for easyness.
falcon is offline   Reply With Quote
Old 01-11-2011, 07:30 AM   #15
Elite Member
iTrader: (1)
 
Join Date: Jun 2006
Location: Warrington/Birmingham
Posts: 2,658
Total Cats: 39
Default

Quote:
Originally Posted by ianferrell View Post
I kinda doubt ms1 has support for tacho output... Time to upgrade to ms3 w/ ms3x and run full sequential .

MS1 does have a tacho output, bit of an extreme reason to upgrade to MSIII.

To get your MS1 to create a tach signal just build this simple *** circuit, should take all of ohhhh 10 minutes.

http://www.msextra.com/doc/ms1extra/...l.htm#tachoout

Has worked perfectly on my car for 4 years so far.
richyvrlimited is offline   Reply With Quote
Old 01-11-2011, 10:54 AM   #16
Senior Member
 
Join Date: Aug 2010
Location: Maumelle, AR
Posts: 618
Total Cats: 2
Default

Quote:
Originally Posted by richyvrlimited View Post
MS1 does have a tacho output, bit of an extreme reason to upgrade to MSIII.

To get your MS1 to create a tach signal just build this simple *** circuit, should take all of ohhhh 10 minutes.

http://www.msextra.com/doc/ms1extra/...l.htm#tachoout

Has worked perfectly on my car for 4 years so far.
Was trying to be funny, I see I failed
ianferrell is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
01-05 Fab9 PNP COPs (used) FrankB Miata parts for sale/trade 6 09-30-2015 12:48 PM
"Chimney Ethanol" E100 MiataGarage Engine Performance 5 09-30-2015 12:04 AM
Koni 1150 Coilover Kit drumman83 Suspension, Brakes, Drivetrain 2 09-25-2015 08:03 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 10:31 AM.