are new plugs necessary i just replaced with new motor craft plugs all i have are cold air intake and 93 oct predator tune this lower pulley is all that I'm gonna do as far as performance wise..
are new plugs necessary i just replaced with new motor craft plugs all i have are cold air intake and 93 oct predator tune this lower pulley is all that I'm gonna do as far as performance wise..
NGK Tr6 #4177 is what you want, gaped at .36 Their cheap, about $2 each.
Little colder plug for increased boost, and a tighter gap so you dont get spark blowout from the extra boost
They're absolutely required. You'll be blowing the spark out left and right with stock gap plugs inthere, and your factory plugs aren't the right heat range for a 6 lb pulley.
As sonic said, TR-6's are the best bet to go,and cheap too.
Short Answer: YESOriginally Posted by jbooth44
Yes...change your plugs and gap them properly
so .36 is the proper gap
yes tr6's is what I'm putting in tomorrow, just needed the gap size.. someone on here told me the tr6's will be good if i go back to stock so..yes +1