I wasn't a believer til my friend now runs consistant 13.2-13.6 with nothing else changed but adding these plugs to his Redline ion. Yes he has some other mods, but before he would be a mid 13 then a low 14, all over the map. 2 fridays in a row with these plugs and he was consistant. The guy is very maticulous, so hes knows that these are the plugs for his car now. But on Zex.com, they only list for V8 applications and hes using 82003. Anybody here using them? if so, which part number did u use?

Thanks
Nate



Evolution of Cavyboy-->C22t--> C24na--->c24s/c
1995 Cavalier W/2k1 Engine
GM S/C 13.940@99.78pmh w/2.068 60ft

was never a fan of ZEX products..........


Glad they work out for your buddy.




SPD RCR Z - '02 Z24 420whp
SLO GOAT - '04 GTO 305whp
W41 BOI - '78 Buick Opel Isuzu W41 Swap