Spark plug Bosch or NGK

NGKs are my go to’s

I've run Denso and NGK on E85 for 10k+ miles and numerous track days, with zero issues.

Holy shit - $75 spark plugs? I think my Honda plugs cost like $5 a pop for NGK iridium

Also, you should probably go with NGK spark plugs because if you put Bosch ones that are made in China/Russia you are going to have a baaaad time

Some of those markups are insane. I can get NGK laser iridium plugs for less than $70.

At 85k I swapped to NGK Iridium Ix plugs on my 2019 civic with the 2.0na and I swear it added at least 20% response. Makes me wish I would have gotten it with a manual cause it would be so much more fun to drive around town. Also got a few more MPG

I do NGK 6510 one step colder. I do 0.025”-0.026” gap. I had a shop do my last set since I didn’t trust myself. He accidentally did 0.022” and I put them in and they’ve been fine. The other set is 0.018” and idk if ima put them in. Gotta change the one step colder NGK’s at around 15-20k miles. I usually change mine when I start seeing high spark retard. I’m BT 93/E40 with aux.

I replaced the OEM plugs with NGK, they lasted about 15,000 miles. Burger Tuning told me that 15k is about all you'll get out of NGKs in these cars.

I changed my plugs for NGK IRs but now I have a rough idle when the engine warms up.

I had plugs from Amazon ngk and I had a wicked misfire couple days after. Somehow the ceramic broke off.