Discussion in 'Performance & Fuel' started by fugitive, Nov 18, 2013.

  1. fugitive

    fugitive Member

    I don't know if this has been discussed but has anyone seen any differences in performance from the AC41-993 Iridium compared to the AC14 Rapid fire in a 93 4.3? As of now I have been running the standard copper core RT44lts (Marine) due to the fact that I had them on hand from my boat and my local box store was out of stock when I had a major fouling issue of the above listed plugs. Just looking for some feedback I know the 41-993's performance but the comparison is what I'm interested in. Thanx!

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