The Walker Products ignition upgrade is a game changer .Through trial and error, i found that this product is a high-quality ignition coil that delivers power like no other. The Thundercore Ultra system improved my engine`s performance, making it run smoother and faster. The installation was straightforward, and I was impressed by the durability of the material. The only downside would be the price, but the quality and performance more than make up for it. Highly recommended!See full review