Yeah but when your car is parked you're not going to know the difference. Yeah, maybe a little but I need to know how they work under load with heavy acceleration and all that jazz.

Bosch makes tons of great products but yeah I don't think those 4 prong spark plugs would work very well. Seems to me you would be more likely to kill the spark since it is spread out in 4 directions instead of one. But they do look pretty cool.


I can never remember if I get NGK or Denso. Both work and I kinda just grab one or the other. Pretty sure I have NGK iridium in both my sports cars.

Copper conducts better but doesn't last as long. Iradium lasts longer but isn't quite as good. Honestly, unless you are putting 600+ HP down you probally won't even notice the difference.

Popping under decel with no exhaust is normal. When your blowing out the spark you'll hear popping while accelerating.