Hi all,
The car is a 2001 A4 Avant 1,8TS (older chassis, 180hp). Chip is factory stock, no after-market reprogramming. Plugs installed are NGK PFR6Q.
May I ask for input on three questions:
- Are there any of you using the abovementioned (PFR6Q) plugs? Or is the NGK BKUR6ET (I think this is 3-electrode) more popular?
- Of those of you who have tried both, which has worked better? I am investigating a possible (though sporadic) predetonation issue and am wondering which of the plugs is more predisposed to causing this, if any of them.
- I notice that the join between the long ceramic section (where the coil boot fits) and the metal section has gone brown-yellow. Is this normal or is this an indication of too high temps? Plugs have run for
BRgds, Robert Gothenburg Sweden