Spark plug Bosch or OEM Subaru

I've been running W7DTC's for about a year now, with no problems. I haven't done any back-to-back dyno testing to see the difference between them and the usual W7DC's, so I can't comment on any power losses/gains.

I have never had an issue with the Bosch's

I personally pick the Bosch Super Plus Copper because they are cheap and last about 20-40k miles...

I'm running bosch platinum single pronges with no problem..

im running reg bosch silvers (of course the right heat range) on my supercharged setup and they run perfectttt, no misfires or anything, i love bosch plugs

That's what I am running in my wife's 94 and the idle in her car is real smooth...

I have a full obd1 wiring harness from box out 1 brand new plugs(bosh)wires(bremi) cap&rotor(bosh) bucking is not as bad

After I put them in (I was one of the first in my region to carry them and use them in my own car) I found a significant loss of power. Swapped those puppies out for some Bosch Supers and I was back to where I was before I put the Plats in.

Don't use those, they suck. The center electrode is tiny, and fouls easily. I've had problems with them, and so have others. They don't last for ****.

everything else runs pretty poorly on our cars. especially the bosch +4's