I run ngk bkr7e plugs gapped to .024 at 15psi. No probs here.
I have been runing the NGK BKR7E which is one step colder than stock (NGK Part# 6097) and I have a K04 with GIAC K04 software and other mods. They work great with a .028 gap. I change my plugs every 5K.
I just installed some of these NGK (BKR6E) plugs. I set the gap to .030 These went my 99 A4 1.8T Avant Quattro. The car is stock except for a K&N filter. Idle seems awesome and flawless all the way through the rev range.
I use them, but a colder plug, they work great.
Yes the 5's are colder plug But they run great and less fouling out.
I just put in NGKs today and it fired right up.
I'm running NGK BKR7E plugs, gapped to 0.028 with APR's K04 program and its working fine.
There was a considerable difference when I installed my new NGK plugs. My engine revved up easier and the fuel efficiency increased.
good plugs, cheap, and I get zero misfires at 0.028\" gap on a chipped K03 Sport.
I put in a set of BP6ES today, gapped to .022", and had every bit the misfiring problems as before, and probably a bit more severe and more frequent.
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