Spark plug Denso or AC DELCO

I run the Denso.

Denso 5749 non projected

I got some good tips from the community and went with Denso IKH24. Also bought a gap tool to properly gap them. Im planning on swapping them out every 8k.

Almost everyone either runs the HKS plugs or Denso plugs. I personally have had no issues running the Denso plugs.

I use [Denso IKH24's](https://www.fcpeuro.com/products/audi-vw-spark-plug-denso-ikh24). It's the projected tip version of the Denso plug EQT has recommended on their FAQ (IKH01-24).

Acdelco plugs....Never had problems with either

Use only Honda specified plugs (usually Denso Iridium) and they last 100,000 miles just fine.

Back in March two days after finishing the Water Pump replacement it started misfiring. I started with replacing the spark plugs with OEM Denso's, but that didn't fix it but was VERY NECESSARY.

the tips of the IKH24s break off in expensive TTRS engines.

I have the 24's, not impressed.