Quote:
Originally Posted by Bmw doubles
Quote:
Originally Posted by shivaswrath
Trying the N20 plus today.
M2/3/4 plugs were really bad on my N55 gapped between .020-.024, so gave up. Maybe plugs were bad, but all cyclinders misfired under boost. And the plugs were purple/red, clearly I need colder.
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Are you saying they some plugs were gapped
.20 and other plugs were gapped .24 or are you saying you've tried all of those ranges on the plugs uniformly? Also are you running Delphi ignition coils? |
To clarify, M2/3/4 plugs,
All 6 gapped at .020" and all cyclinder misfired code on stage 2 BM3 and stock
All gapped to .022" and misfired on stock
All gapped to .024" and misfired on stock
On NGK/N20 plugs (2 colder than stock),
All stock gap at .028" and no misfire on stock or stage 2 BM3 (target 16psi as reference point).
I may gap down to .020" but wanted to start with stock initially and get some runs in...No misfires.