Spark plug Bosch or NGK

good plugs, cheap, and I get zero misfires at 0.028\" gap on a chipped K03 Sport.

They work beautifully. I've been using them for the past 24,000 miles. I change them every oil change (hey, they're cheap) and they seem to be the smoothest that i'v tried.

28R, NGKBKR7Es - 0.028" Change every 8K miles. Only $2.30 a piece, and I run lots of race fuel

using the BKR7E for the past 6 months without problems.

Spark Plug Gap - Measuring and Adjusting NGK - BKR5EKUP

My personal preference is NGK's, I run em in everything I've ever owned. They seem more reliable, and last longer.

my 570+whp civic buddy terry couldnt get past 574whp... the plugs he was running, bkr7e race plug, had alittle brown speckle and melted the number 3 plug. after letting the car cool down for 30 mins or so, instead of retarding timing to run more boost he slaped in a set of ngk r5672a-9 plugs... and upped the boost 2psi from 27psi to 29psi... and BAM!!!!! 616whp.

Same plugs I'm currently running - used them with my Jacobs ignition, and they work like a champ.....

Apparently these are good for my race car but might not be good for street application.

I just put Bosch Copper plugs in my 2.0 L Passat and it's running like crap. I think I forgot to gap a couple of the plugs... Would that explain the rough running engine?