Quote:
Originally Posted by Patrick G
We did some extensive testing on the vaunted WeaponX plugs with a naturally aspirated 600rwhp Z06 Corvette when these plugs were first being introduced to the market. We were told by the company to expect a 15rwhp gain vs a copper plug on an engine this stout. We had NGK TR6 plugs installed and made 601 rwhp. Changed to the WeaponX plugs on the dyno and retested. Best pull was 597rwhp. Reinstalled TR6 plugs on the dyno and made 601rwhp.
From that point on, I dismissed the WeaponX technology advantage as mostly hype and not real world substance. I love new technology and embrace it when the results back up the literature. In the case of the WeaponX plugs, the proof was not in the pudding.
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As convincing as that may sound on the surface many factors can swing the dyno 4 hp so it is not very definitive.
A hotter spark requires more fuel and vice versa.
Racing with spark plugs is one requirement, and street driving is an entirely different requirement.
The majority of use with all the members on here is Street Driving, and IMO the Factory plugs will out perform the the TR6 All day long.
And Like you I have never seen any HP from changing spark plug types styles and HYPES.
That's why I Trust GM Engineers choice.