VEMS Community Forum

Technical => Ignition => Topic started by: turbols1 on June 11, 2014, 06:29:09 PM

Title: V8 COP WASTED SPARK with 4 ignition outputs
Post by: turbols1 on June 11, 2014, 06:29:09 PM
How can I use 4 ignition outputs for 8 cop wasted spark like mega squirt 2 can do with 4 outputs? I only have 4 logic 5v outputs in the vems. How would I set the trigger settings? I do not want to use dual output mode and think there should be a way to do this.
Title: Re: V8 COP WASTED SPARK with 4 ignition outputs
Post by: VEMS on June 12, 2014, 03:27:39 PM
Hello Turbols1,

Just wire two coils, which fire 360 crank degrees apart, to one ignition output and select the proper firing order/setup the proper output sequence in "Base setup->Ignition outputs visual"
Make sure to confirm your timing and firing order with timing light.

Best regards, Dave

Title: Re: V8 COP WASTED SPARK with 4 ignition outputs
Post by: turbols1 on June 16, 2014, 04:49:30 AM
I am using 8 cop coils so i cant use only 2 coils. I need to wire all 8 and was thinking of running the paired cylinders for each output.
Title: Re: V8 COP WASTED SPARK with 4 ignition outputs
Post by: VEMS on June 16, 2014, 08:44:32 AM
Thats what i ment, paired cylinders (two coils on one VEMS ignition output pin) of course using 4 outputs total = 8 cop coils.
Title: Re: V8 COP WASTED SPARK with 4 ignition outputs
Post by: turbols1 on June 16, 2014, 08:28:00 PM
Ok, here is what i cam up with.

1+6 to pin 35
8+5 to pin 11
7+4 to pin36
2+3 to pin 33

I need some help creating a reference table

this is what it looks like now and need to change it. since imusing only 4 ouputs can i make it a 4 cylinder firing order ?

(https://lh3.googleusercontent.com/-T6mXS28gl8E/U59EBjgkj3I/AAAAAAAAAWI/sPVS7x_-qf0/w533-h300-no/Capture.PNG)