Im running the On3 2nd Gen twin turbo kit. Its their newest top mount kit for S550s. I love the kit. Great quality and fitment. Very pleased with the setup. Street manners are great and it pulls hard as hell
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I have the S550 Gen 2 Top Mount kit on my '17. Extremely impressed with the quality and power of the kit. Not a bad install, however we opted for the Hellion PCM/Fuse Box relocation kit as it was a much better design and quality than the On3 relocation kit. However, the rest of the On3 kit was...