Review on Walker Products 900 1650 Thundercore Ultra by Casey Yuh

Works great on 2003 Sonata 2.7L Fixed my P0303 misfire on cylinder 3 (even with new spark plugs) and now it works much better, with more acceleration. They're a little long (2 or 3 inches), but longer is better than shorter. Looks very similar to the OEM. There was some dielectric grease in the kit, but it's so small it only lasts half the candles. Other sages are super lucky. Installation is a PITA as the intake manifold needs to be taken off, but there are videos on YT that will help. Good quality cable.