Over the last 16 years with my 8 gas engine VWs and Audis, the OEM or OEM equivalent (Bosch or NGK) at stock gap (unless chipped) have performed better and more consistent than any other I've tried.
The NGK's have been a solid go to for me and my little Pocket Ferrari for every day driving.
NGK run good for me
I’m 90% sure my EGTs came with Bosch plugs, switch to NGK that are 2 steps colder for my tune haven’t had any issues with them for about 25k miles
OE plugs for this engine is NGK Laser Iridium. Hyundai/Kia usually use either Denso or NGK plugs.
I'd get OEM wires and NGK iridium OEM speck plugs.
Went with the fancy ngk plugs. A man of culture. I put those in my Volvo and they say it's heresy.
I've use NGK products in American, Japanese and German vehicles for over 30 years with absolutely no problems at all. Note that NGK spark plugs come with a proprietary anti-seize coating on the threads, so no extra anti-seize is necessary at all.
The only thing I noticed when it was extremely hot and humid my car was slow in accelerating.
Replaced the plugs -- BKR8EIX per the hstuning blog. I'm still getting the misfires...
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