The 3923 are the ones listed under MKIV. As for wires, I used Autolite too....stonedworm said:Which ones are those???
The autolite 3923 and the 5503's are both reccomended for the MKIII
While on this subject whats the best plug wires to get?
Bad gapping of the plugs can cause your car to idle bad.Mr. Sinister said:NGK #6262 is the copper equivalent to the stock plug according to NGK tech. That's what I'm running in my car (nowhere near stock though) now and it works fine.
For wires, I'd go OEM over NGK, Magnacore over OEM.
Edit: My car idled like crap on 3330s. Everyone's car is different, so I'd just try different plugs until you find one your car likes.
I check the gap on all my plugs before installing them. IIRC, 3330s are 1 heat index colder than stock and have the wrong insulator tip. I'm thinking that didn't help any. But like I said, if they run fine in your car, great. Use them. They didn't in mine so I had to find something else.TRD White Comet said:Bad gapping of the plugs can cause your car to idle bad.