Originally Posted by SickEJ1

yeah i understand the mixed fuel contributing to the foul, but it was fine when tuning on mixed w/ the oem ngk 6 plugs..which i have the BEST results from... @ a .025 and the others just foul ....now yes the fouling is only occurring under WOT on all plugs including the 6s on high... My car's best bet to see a high boost pull is w/ the heat range 6 plugs they take longer to foul...but as for normal driving ..the plugs work fine...ngk 7s,8s,auto lites 3923 all foul below 17 psi under WOT..idno..my friend told me i ought to replace the msd cap..i've already tried a ton of plugs and have replaced the button, tried different wires...i was gonna go with the cheapest 1st being the cap then check the coil next...and yeah my plugs are 8.68 from advance..but x that by 8-10 times....eeerrrrrrrrrr....and my car is mid 11s on a/f