###    
   ##    
   ##    
   ##    
   ##    
  ####   
         

         
|\     /|
| )   ( |
| (___) |
|  ___  |
| (   ) |
| )   ( |
|/     \|
         

 ___   
(  _`\ 
| (_(_)
|  _)  
| |    
(_)    
       
       

         
         
 ##  ##  
 ######  
 ######  
 ##  ##  
 ##  ##  
         

   ___ 
  |_  |
    | |
    | |
/\__/ /
\____/ 
       
       

IMPORTANT: enter the case-INsensitive alphabetic (no numbers) code AND WRITE SOME SHORT summary of changes (below) if you are saving changes. (not required for previewing changes). Wiki-spamming is not tolerated, will be removed, so it does NOT even show up in history. Spammers go away now.


Visit Preferences to set your user name
Summary of change:
'''Ignition (output, ignadv and dwell) page for MembersPage/EricN''' Note that trigger is on MembersPage/EricN/Trigger '''Even-fire 6-cyl''' '''LS1 ignition transformers''' This is what I know so far: 4 wires * 12v * ground * ground to the ecu * trigger wire Since there is only 1 "trigger wire", I assume this can only work with distributor. Maybe a 6-cyl wasted-spark coilpack off of a Ford or Chrysler or whatever worths considering (drawback is that it might prevent factory look). I have done some various measurements on a running vehicle. Trigger is by a 4 Volt signal (I didn't check the trigger time but the scale was set to 1 second and it was just a vertical blip) that does not change at all with RPM. I suspect it is extremely low amp, logic level signal. '''How to output a logic-level ignition signal''' Use the same driver as the original IGBT is driven from, just solder a jumper wire in place of the IGBT (don't solder IGBT for given channels), between the gate and drain the 2 pins closest to the EC36 connector, and use ign_out=70 in your config /Emil We usually use ignition channel 2 and 5 for these (recent tradition, that assembled ECMs are setup with ign channel 2 and 5 this way unless ECM goes for V8 with COP: very handy when IgnitionPage/TransformerWithAmplifier is to be used), for 6-cyl with ignition module with logic level input you need a 3d logiclevel channel. MembersPage/MarcellGal/EngineSwap also uses similar logic-level ign setup for IgnitionPage/TransformerWithAmplifier ---- '''Dwell''' - for LS1 ignition transformers I have measured dwell: * dwell length is around 59 degrees at all engine speeds and loads. * Duty cycle was at about 95%, stayed constant. Please correct the above, obviously there must be some misunderstanding as 59 degrees is not equal to 95%*120 crankdegrees. * Pulse width changed dramatically but if I understand it correctly: if either of the above (59 degrees or constant 95%) is true, that is natural consequence of engine speed ( pulse period decreasing as RPM increases)
Optional: Add document to category:
Wiki formatting: * is Bullet list ** Bullet list subentry ... '''Bold''', ---- is horizontal ruler, <code> preformatted text... </code> See wiki editing HELP for tables and other formatting tips and tricks.