The tunes I run are on the stock pullies so the cold weather may not play a big part
I may play with the gaps tho, I set the plugs that tight for when I change to the 2.75 upper and the #4 lower but maybe it wasn't such a good idea since the reason I dont have the pullies on now is due to not having a tune to run them on (not to mention pegging out the maf)
the octane boost? I was alwayse told that octane boost was fine for the o2 sensors? And I was warned to stay away from race gas due to coating the o2 sensors with white powder and causing them to fail maybe they were wrong?
But I have 4 good motorcraft o2 sensors in the garage due to the fact that I changed them all because I kept getting a p0172 DTC and a check engine light, come to find out it wasn't the o2's. It was the last plug on the driver side that was about to have the ole 5.4 blow the plug outa the head syndrome. luckily I caught it and changed it before it blew.
On another note, changing those plugs made me have to go to the store and buy extensions,plires,swivel's and nuckle sockets have you guys figured out how to change those plugs without it bieng a PITAZZZ?????????
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