Hi Guys,
Wasted spark is an absolute no brainer and I would have a Cosworth without one unless it was standard and I was running concourse.
The system is so much better than the antiquated mechanical spinning rotor arm and carbon brush system in so many ways.
- For starters there are no moving parts. (Rotor arm)
- There are no variable gaps. (Worn dist shaft means different voltages to every spark plug)
- There are no rubbing parts to wear away and lose voltage (rotor arm - carbon brush in distcap)
- There are no gaps to jump which loses a lot of voltage (rotor arm to cap)
- The king lead that had to do the job of all 4 HT leads is gone. (king lead)
- The alignment limitation for advance retard has gone. (rotor arm arc as it spins past dist segment)
But most importantly of all, you now have
TWO coils running two cylinders each instead of one coil running four cylinders.
This allows us to spend
twice as long charging the coil between spark events, which means we have a MUCH better spark at the spark plug.
The biggest cause of poor ignition performance on the YB is the lack of charge time as the revs go up. This meant to maintain a spark we had to reduce the spark plug gap significantly in order to make sure the low voltage we had would make the jump.
(The boost doesn't really blow sparks out guys... it just makes the cylinder pressure so high the spark cant make the jump as it hasn't enough voltage, so we either make the voltage higher / the gap smaller or the cylinder pressure lower... and we NEVER turn the boost down do we boys?! LOL)
On boost the decreased spark gap works to a point, although it does lead to quite high HC's
(unburnt fuel) and often at idle, when combustion pressure is low, you end up with a fluffy idle misfire that just wont go away as the gap isn't big enough to correctly burn the fuel at such low combustion times.
One of the things a lot of owners say to me after fitment is
"It sounds a bit more like a jap car at high revs now. Why?"
Well that signature fluffy, rough grunty sound the YB is famous for with big power and boost, is the sound of horrible combustion.
Wasted spark often picks up some good power at high revs and HC's come down from triple figures to double figures where they should be.
How many times have you guys sat at Santa Pod and watched a YB race a jap car and the YB be the only car with misfires and puffs of black badly or partially burnt fuel out the back?
The Japs have had wasted spark since the 70's. LOl
Think about this too...
There has not been a single mass produced car in the world manufactured since 1992 without wasted spark or coil on plug. This technology died over 20 yrs ago at best, and for most OE's, over 30 years ago, and for very good reason. Get rid of it.
All that said though, unless we find a solution to a problem we have right now of sourcing the connectors to interface the ign amp plug on the OE loom, there aren't going to be any more kits after we sell the last three in stock.
