Owner reviews for spark plug

I have NGK iridiums in my car, I have always had good luck with ngk plugs in any car or bike.

i run autolite 63 (gap to 24 thousandths) on my stage 4 for 500 miles with nitrous, they look perfect. 99 cents each. to each his own.

Plugs have been on for almost 4 days. No problems! Idle and runs smoother! HP feels the same!

The part number I have for the Bosch is 4418. There web sire below only goes up to 2000 EV so I don't know if these are the same as the 2001 + EV. I really love these plugs and ran them in my prior Audi A6. Long lasting, great even spark, no gaping. Bosch claims (see web site) increase power. Maybe?

I bought a set of NGK BKR6E plugs and gapped them to .032\". It seems like they are just fine for the 1.0 bar chip I have. I don't feel any change in acceleration so, the previous Bosch F7LTCR plugs must have been ok. Eitherway, I'd rather have the NGK's due to their price and easier gapping method.

I use NGK BKR6E plugs I switched out my factory Platinum for these beacuse alot of people on Audiworld did. They all said that it had a smoother idle with the coppers. They were right.

It has been satisfactorily argued that the inexpensive Autolites work as well as the expensive Iridiums, with the understanding that the Autolites must be changed more often.

I've run the platinum +4s in my GTI and I haven't had any problems but I haven't found them to feel any different than any other plug.

And I tried both the Bosch and the NGK back to back, and the NGK ran far better than the Bosch. The Bosch were terrible in my case.

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?