My turbo ZC missfires more with colder plugs. It does it occasionaly with the plugs the motor came with, but it does it even more with the colder ones. With the "stock" plugs it only missfires occasionally at idle, not while boosting, and I cant hear any detonation. With the colder ones I can hear about 1 missfire per second. I havent tried driving it yet. Is this normal?

 

what are they gapped to? how is your air fuel ratio? what kind of timing are u running....need more details to answer

 

Gapped to .35. Idle AFR is 14.0:1. Unsure of timing.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tegunderpressure &raquo;</TD></TR><TR><TD CLASS="quote">Gapped to .35. Idle AFR is 14.0:1. Unsure of timing.</TD></TR></TABLE>

Drop it to .28.
14 in boost?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tegunderpressure &raquo;</TD></TR><TR><TD CLASS="quote"> Idle AFR is 14.0:1.</TD></TR></TABLE>