My car always had issues with timing. So last night I am wiring in 4 fc trailing coils and open up the harness to find this.
The current setup is one fc trailing coils running the leading plugs and a leading coil running the trailing. The wiring was backwards. The guy that did the MT install put the wiring that is supposed to go to trailing coils on leading and vice versa. The orange and orange/black wires from harness were on the leading coils and the solid yellow was on the trailing only. I found the yellow/black wire cut and taped up in harness. (yes, I wanna kill the guy)
Even when re-stabbing the CAS at factory mark with pulley mark at 0deg, the timing light would not hit where it should. On the Racing Beat pulley it would trigger (sometimes) the light to show about 20deg off.

So my question is, how far off was my timing since it was firing *** backwards. Car would run but boost would not go past 11-12 psi, at WOT the car would feel as if it hit a plateau and stay there.

I'm planning to wire in some msd 8207 coils and redo this mess.

Car is a 13bt, lt10s with x4 box.

 

those wiring colors make no sense to me so i can't help you in that respect. microtech IGN wiring has used all grey with colored stripes(red/leading, blue+green/trailing and black/unused) for as long as i can remember unless this is a X4 box setup in which case you should ditch the stock saturated coils.

for the timing, keep in mind the racing beat pulley uses a 10ATDC, TDC, 10BTDC and 20BTDC pattern so the standard 5* ATDC timing setting for the leading #1 rotor would line up half way between the 1st and second mark and the trailing would line up to the left of all marks with the microtech timing lock on.

 

The wiring mentioned is the x4 box. I am ditching the stock fc coils and possibly going with some msd 8207 coils. I've read a lot of good feedback on those.

Hopefully rewiring this properly it'll solve some of the timing issues I have had with the car. What is the degree difference from leading to trailing? Thanks for the input karack!

 

The split is whatever you put it as. Factory it's 15* in boost. I'd advise you to leave it at 15 too. It's not worth the few more hp to run less split.