Spark plug NGK or OEM Volkswagen

The 9s are good. Considering I have run them anywhere from 15psi to 36psi of boost and they have performed flawlessly I would say that they work well.

I replaced the spark plugs earlier. The new spark plugs is NGK PFR6Q from Checkers. It is gap @ .032. The old spark plugs are the very cheap Autolite. The previous owner probably tried to save money, but it end up cause me a lot of trouble. The gap of Autolite plugs are more like .042. I drove it a couple blocks I installed the NGK, and it felt better.

Or ngk brk8eix. Thats what im using and they are great.

I went with iridium's,and like the millage ,performance...

With the BKR5EKU plugs I got apx 27-29 mpg. All stock except for a neuspeed chip.

i use NGK G-power plugs in all my vehicles and they are the best ive found. they are about $2-3 tops and last forever, i have no complaints about the performance either.

I got on my last long trip 29-30 mpg doing 75-80 mph

OEM plugs which are NGK BKR5EKU used to get 26-28mpg @ 192k miles

I get a random misfire at idle, but nothing in boost surprisingly. Hey, I'm just goin with what works. And Im running 19 lbs on a T3/T4.

I changed over to the BKR7E model to see how they worked. I wasn't impressed because after that the RPMs on my tach wouldn't stay steady at idle.