Average Reviews:
(More customer reviews)First of all. The Amazon price for this item is 40% of what other big automotive web-retailers charge. Someone is trying to make excess profits.
On installation into my Ford F250 with V10, there is noticeable difference in the throttle response. Engine is more responsive to small throttle changes just above idle, and it seems less throttle is needed to ease away from a stop. There is less burble in the exhaust note. An added plus is that 1st to 2nd gear shift cannot be felt now (from less throttle needed?). Perhaps these plugs are more consistent at firing lean mixtures in newer cars. Note that old plugs removed have gaps still at factory spec.
One caveat - the differences may have resulted with ANY new plugs put in. New plugs with sharp edges at electrodes should start firing at lesser voltages compared with rounded electrodes on well used plugs. The exotic materials used in these plugs may make differences in extended term performance.
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Bosch Platinum IR Fusion spark plug has an iridium and platinum fused center electrode with surface air-gap firing delivering optimum horsepower, better than OE iridium plugs.
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