i have been using the tr6's for a long time with good results. when i run the leaded fuel i seem to foul the plugs prety quick. i have been meaning to try a set of the iridum but just haven't done it.

 

running denso plugs in mine too. haven't had any problems so far, even with the 50 shot

 

Sorry if this is a hijack.
I was wondering the same thing for the STS turbo kit on my Dodge. Just think, we have 16 of those buggers in there! My credit card is screaming already.
Jerry2500, F8L, any of you running colder/iridium?

 

denso it22 is the same heat range as tr6.

 

So what should i go with , the TR6's, or the denso IT22's? does it really matter?

Sidenote- i should gap the plugs at .35 for my blower application right?

Nate

 

screw the extra cash, just go with the old standby. tr6 at the preset gap. something like .037.