I recently imported a set of 6 of these spark plugs into Ireland from the United States, as I could not find a source for them in Ireland. With shipping costs and import taxes taken into account, it was a somewhat expensive experience, but nonetheless, based on the purported specification and performance of these spark plugs, I was prepared to take a gamble. The plugs recently arrived without problems and I had them installed into my car, which is a 2.7 litre V6 Hyundai Coupé. Not a 'Supercar' but not a 'Slow-Coach' either, by any means. No problems with the installation, and I am finding better throttle response, which I like as I have a 'heavy right foot'. Since I bought and had the plugs installed, the guys at the garage / maintenance shop which installed them called me and asked me how I'm getting on with them, as they are interested in also recommending them to other customers who have high-performance cars. My answer to that question will be positive, I recommend them, based on three key criteria -
1) Improved throttle response - which is what I wanted in the first place and is the reason I bought the plugs. 2) Very good customer service. 3) Pain-free process in shipping the plugs to me. I suspect that I'll also find that I'm getting improved fuel economy, due to improved combustion performance, but it's too soon to definitely say that yet, I need to do a mixture of city and country driving over a couple of months before I'll know for sure. Overall, a positive experience and I have no issue with recommending the plugs and the manufacturer. John Clancy, Dublin, Ireland. September 17th, 2018.
Posted by John (Dublin, AA) / September 17, 20182007 Hyundai Tiburon