There are several benefits to having an ICE ignition system. These are as follows:
- Easier Starting.
- Better Idle quality (increased manifold vacuum).
- Improved throttle response.
- Improved power and torque (especially low and mid range power).
- Much less chance of detonation due to excessive advance / advance at wrong point on RPM scale.
- 3 Year Warranty.
- Local back up service and support.
The only way to ensure proper earth / ground is when the battery negative cable runs direct from the battery negative terminal to the engine block as one continous cable. This applies even if the battery is mounted in the rear of the vehicle.
As a minimum, you should have alternator voltage (13.8 - 14.8 volts) at the coil positive, to ensure the system operates properly.
However, these systems work best with 16 volts at the coil positive, which can be achieved by using a booster (Part No: 2316). This will ensure maximum ignition output at all times, even if the voltage feed into the booster drops to 10 volts.
In the majority of cases, resistor plugs should not be used (there is only a minority of exceptions to this). Put simply, resistor plugs have approximately 5000 ohms of resistance built into each plug. This is purely for reducing RFI (Radio Frequency Interference).
However, it also reduces the energy available to jump the gap in the chamber and increases the probability of cross firing - refer answer below. Even when using higher quality spark plugs with exotic materials for centre electrodes (which increases the energy available at the gap), if they are of the resistor variety, this will offset any gain made by the superior electrode.
This situation becomes more critical when using LPG and in high performance engines which invariably have higher cylinder pressures.
A large distributor cap is not always necessary with 7 Amp systems. They are however, highly recommended when using a 10 Amp system. At the same time, if room allows, it can never hurt to use a large distributor cap with a 7 Amp system.
The theory of using large distributor caps, is that it will be harder for the spark to cross fire within the cap, due to the larger distance between the towers. Whilst in isolation, this is true, we must look at what is causing any cross firing to occur. In virtually every situation, there will be a massive resistance in the spark plug wire and / or spark plug (more common when using resistor plugs - refer answer above).
The solution to the problem is to rectify any faulty spark plug wires / spark plugs. By using a large distributor cap and retaining the faulty spark plug wire / spark plug, the problem is only being masked, with the actual fault remaining uncorrected.
