Does anyone have a part number for 1 step colder plugs . Ive called summit, Ngk and i guess they cant figure it out . There has to be someone who has a part number please help! I went to summit and told the guy i needed colder plugs and he gave me factory plugs . Im running 100 shot of nitrous. Thanks in advance . No im not being lazy i really tried to figure it out but with all the part numbers changing its crazy

 

whoever you talked to is a plug (yes pun very much intended), because NGK has colder plug cross-reference charts on their website...there's also this thread already:

https://www.evolutionm.net/forums/04...knowledge.html

 

hey man, just do search, a few (including me) have already discussed this in detail