I'm considering replacing the coil pack on my 98 mazda 626 GF 2L, and am looking at a standard replacement at about $15, a standard replacement with 10 year warranty for about $21, and a "high output" VMS for about $50.
For the first two it's not that big a difference in price, but I'm wondering if there are concrete, measurable benefits to the "high output" coil pack? It claims:
They will directly connect to the factory connectors and deliver 15%-20% more spark energy for improved power and performance.
Increased spark energy and voltage, help improve the combustion process of the fuel mixture to create an efficient burn. The result are quicker starts, improved idle, improved throttle response, cleaner plugs, cleaner emissions plus increased high rpm performance!
SPECIFICATIONS: • Turns Ratio 85:1 • Primary Resistance 0.55 ohms • Secondary Resistance 13.5K ohms • Inductance 4.0 mH • Spark duration (mS) 1100 uS • Peak Current 140 mA • Maximum Voltage 40,000 Volts
I've read annecdotal evidence that such claims are true, but is there a measurable scientific basis to such claims, i.e. hard evidence, not just anecdotal claims?