Originally Posted by Lifted07Duramax
Just curious how people are liking the NGK plug that is 1 step colder than stock plugs.
do they notice better performance? Less knock? Better mpg possibly? Even though its good enough
I am and love them, not one misfire and that's going up to 22psi
JB4 G5, Stage 3 LPFP, Stage 2 MOTIV PI, 750 ST, Custom OCC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2, DEFIV kit, KW clubsport, Delrin solid SF bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, M3 fenders, M3 OEM sideskirts, Mtech rear bumper, CSL trunk, MORR VS8.2 rims 245/295