Originally Posted by Poopyhead44
I've. Been reading and a lot of people say you can tap into a coil wire the red and white one on the #8 coil
You can if the device you are connecting to can deal with that signal, and can be adjusted to handle a 2 revs/pulse input (any single cylinder only fires once per two engine revolutions on a 4 stroke/cycle engine).
Another complication that some tach-like devices can't handle is that at idle, and up to 1200 rpm, each COP fires rapidly three times at each spark event, as shown below:
This is to improve combustion and emissions at idle and low engine speeds. It can confuse some external devices if they do not filter out the repeat firings.
- 2003 GT, UPR X, FRPP 24lb/h, Magnaflow, PP 70mm TB & plenum, Delta Force tuned,
Steeda UDPs, Ralco flywheel, RAM HDX clutch, 3.73s, 262 rwHP/305 lb-ft.
New ride (7/1/2013) 1998 Mercedes SL500-5.0L 32V VVT 326/347 HP/tq