FoKai

I just bought BKR7E plugs and will replace my BKR6Es. I know it sounds kinda trivial, but are you gapped at .028 or .032?

I understand regap .004 for every 50 hp. How about meeting in the middle and gapping at .030?

x1rider

I heard/read 0.032 to 0.028 so I went 0.030 (right in the middle) myself.
From what I can understand, if you get misfires from the increased boost blowing off the spark, you can go a bit tighter on the gap.

x1rider

Actually, try paging Diagnosticator1, if anyone knows, it's him.

FoKai

and an article said anywhere between .028-.034 is fine; however, the million dollar question is, what is the *optimal* gap?

most of the other articles i found were gapped at .030. these articles, however, were for the b5 s4.

x1rider

Optimal probably depends on a million factors!!! I can tell you that with 0.030 didn't give me any misfires yet (remember though, I still have the old FX version, if that makes a difference)

FoKai

<ul><li><a href="https://forums.audiworld.com/tt/msgs/1299027.phtml">readme</a></li></ul>

x1rider

Great reference to keep handy! Thanks!!!

Murphy'sSidekic

...as time goes on, and the original plugs start to see high milage, the gap expands. So essentially, the OEM spec is to under-gap the plugs to make the plugs last longer.

euroshowoff

I run bosch FR5 DTCs no gapping required...runs like a champ

MC Hammered

I gapped mine at 0.030" and it works great.