Here's the short answer. If your IS F still has its original coils, a HighSpark kit is a straightforward upgrade. You get a spark that's 2 to 2.5 times stronger than stock, sharper throttle response, and a smoother, more stable engine. You won't get a big power number. The power gain is minimal, and I'd rather tell you that now than have you find out on a dyno.

The IS F is also the car that buys more HighSpark kits from us than any other. When we ranked every HighSpark kit sold through HS Coil USA and our sister store, modinjapan.com, the North American master distributor of HighSpark, the IS F came out on top by revenue and by units. The Standard IS F kit is our single best-selling HighSpark product.

So let's keep this simple. What is it, why does it matter on an IS F, how do you pick the right kit, and what mistakes should you avoid?

The kits in this article: - HighSpark Ignition Coil Upgrade Kit for Lexus IS F 5.0L (2008-2014), SKU HS-LEXUSIS-F-0814-8P: view on HS Coil USA - HighSpark

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