spark plugs

I’ve scoured the forums over at stinger forum and here and am yet to find this problem. I just installed HKS M45iL plugs about a week ago. Closed em to a .022 like recommended by BMS and the car wasn’t running too bad. Couple sputters when idling (i read that’s the nature of the cold plugs) but...

Firstly, I have a 2014 Genesis Coupe 3.8 Ultimate and this is my first forum post. I bought this car around 35,000 miles and am now at ~73,000 miles. I don't know the history from before I bought it but it is all stock and I use it as my glorious daily driver. I haven't brought it to the track...

I’m trying to change driver side spark plugs on 2015 Genesis 3.8 sedan and having a really difficult time taking the manifold off,it’s loose but seems like backside still stuck on something and have noooooo room at all to look cause how close to firewall it is so am did I do something wrong ? Am...

The dealer just called and said my car has 54k miles and needs 4 new spark plugs $782.00 and transmission fluid done $490.00. They suggested, when do I really need to do and is the price normal. I’ve had 5 Genesis and never done before.

Anyone use/know of any aftermarket “performance” coilpacks for the 2.0 G70? Only could find one brand and they have no reviews. Thanks and have a great day!

Hello gentlemen, I want to know the approximate life time and process of changing out the V6 3.8 GDI spark plugs and that’s all. thank you ❤️

I've had my '09 V8 for the better part of 6 years and ~80k miles. Purchased used (CPO) in 2011 with 36k miles, and just rolled over 120k miles in the last couple of weeks. It has been a relatively painless few years, i was subject to the ABS module failure/recall, and some typical early 2009...