[old_master]

There is a wealth of information here on AF. There are several experienced and knowledgable members that have been certified master technicians diagnosing and repairing vehicles for well over 30 years, myself included. With experience, a technician learns what brand of parts work, and what brand doesn't, in each situation. Other members come here looking to tap into that experience and information. Some are looking for technical information, and others for step by step instructions on how to diagnose a problem or the proper procedure to replace a part. It's up to each member to decide whether to use the information or not. If he has questions, most of us here are glad to explain.

I can tell you from experience that a lean fuel mixture requires more voltage to ignite than a rich mixture. It's very obvious when the engine is on an ocilloscope, it sticks out like a sore thumb. Pretty simple scenario: little fuel needs big spark, lotta fuel, little spark. Manufacturers specify a certain gap for the spark plugs to give the correct spark. The injector and popet system used on your engine will cause a lean mixture if the fuel pressure is below 60psi. Same thing goes for a clogged injector...lean mixture and a misfire.

I totally agree that high secondary resistance, (plugs, wires, cap, rotor and coil) absolutely will cause an increase in coil output, and can also cause a misfire.

In response to your comment about parts: "I do find it irresponsible to state that anything less is inadequate." If the engine does not perform properly with a certain brand of part, most people would agree that the part is inadequate. If you look around the forum, you'll find countless times where certain brands of parts are totally inadequate. Bosch spark plugs and fuel pumps are great, but not on a GM 4.3L, you'll have problems... guaranteed. Bosch oxygen sensors, on the other hand, are one of the best you can buy. As you mentioned, OEM hub assemblies are inferior, you learned that from experience. Timken and BCA National are a far better choice for quality.

If a member recommends a certain brand of part, it's from experience, and he's trying to save you a headache and save you some money. Hope this helps.