I know this has been said over and over, but I know I want NGK plugs. I just can't decide which ones between : TR55, TR55GP, and TR55IX. I have a stock engine right now, but I plan to make mods here and there over time. So, which ones of these should I get. There isn't a big price dif between them, and I just can't make up my mind. Here is a link that explaines the dif types for my 2200. I know each is better than the other, but would I have probs with the better ones putting them in a stock engine right now. I know nothing about cold ratings and such. Thanks for any help with this!


http://www.ngksparkplugs.com/part_finder/car_truck_suv/results.asp

the only reason you would need colder plugs is for nitrous, or some form of boost.

and just your NGK plugs from your local auto store



Im a Xbox 360 fanboy...and damn proud of it!!

woot, MGK plugs........

If your staying N/A, go with stock replacements, or maybe one step hotter.




SPD RCR Z - '02 Z24 420whp
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Well what is the heat range on stock? Are the TR55's the same as the stock ones, but just NGK brand. Also sorry for the miss spell. I can figure out how to edit posts to fix it. The heat range on these is 5 i think. I don't know which ones of these three to order.

you can only edit posts if you are premium member.

and TR55's are stock heat range. thats what i was told anyway



Im a Xbox 360 fanboy...and damn proud of it!!

hmmm, im running tr6's now... nitrous on occasion, but would these plugs actually be HURTING my n/a performance?