Spark plug NGK or AC DELCO

I forgot to mention that I installed brand new pre-gapped NGK spark plugs two years ago

I like NGK, but you can't go wrong using what the manual calls for.

Champion and NGK have good reputations.

Ngk’s are hard to beat.

I have Seat Leon FR 2.0 TFSi 2007 DSG F1 165k KM, stock engine, and stock map, only things I've done since I purchased it were: spark plugs NGK

I just changed the plugs in the wife’s e46 or should say that’s what was in the wife’s vehicle ngk whatever model they were.

Rockauto has the plugs(NGK 97181)

If you’re tuned on stock turbos, OEM or NGK 97968s.

I bought these when I did my last tune up and plug swap just to try. I noticed zero difference in power or mpg.

I have a 1986 blazer and replaced the spark plugs with ac delco factory spark plugs purchased from napa, about 2 months later I was driving the vehicle and the vehicle had a miss then starting blowing out oil from the Pcv vlave from excessively high crank case pressure after electrode fell out.