Spark plug Denso or OEM Volkswagen

Denso Iridium 1 step colder plugs. Running great on my 2017 Jetta 1.4T

Get the oem denso ones. There is nothing better than oem for that kind of thing.

New plugs and coils went in and the misfire is gone. Sounds healthy too.

This is what a 202k mile spark plug looks like on an 2013 Lexus gs350 daily driver. Pretty impressed with it overall. All 6 plugs look exactly like this.

For spark plugs, denso or bust

I've been running Denso (5346) IKH24 Iridium gapped .024 on APR stg1 for 48k miles and most recently on stg 2 with no issues.

Denso TT iridium are so far the best ones I’ve tried in terms of performance

if you want some good plugs, get some denso IKH24, they are 1 step cooler than stock plugs.. I change mine out every 20k miles..

No discernible difference to me, positive or negative. But since I am running APR stage 1, I followed APR's recommendation.

Just install my today, is it just me being paranoid or else? the engine noise sounds louder and it's very noticeable. Has anyone felt the same way? by changing out for these spark plugs, does it make any advantage performance wise? btw i am pretty sure the installation was good and not misfire or anything likes that. just more engine noise and not a good noise.