I recently purchased a product designed to improve ignition performance in my automotive, and I was pleasantly surprised with the MSD 31939 8.5mm Super Conductor. My analysis of this product showed that it is easy to install, and features a durable design that improves spark delivery .The increased combustion efficiency is noticeable, making this a great investment for any driver looking to upgrade their vehicles performance. The only con was the slightly higher price point compared to other ignition parts, but the improved performance justified the cost..
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