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Newbster
10-25-2007, 08:14 PM
Im going to buy some NGK's I just want to veryify a couple quick things. NGK's heat range system goes from lower/hottest-------->higher/coldest right???. So a 5 would be hotter than a 7. Right?

And also, currently NGK recommend a heat range 5 plug, but since my 5sfe is moderately modified, I am thinking about getting colder 6's. Would that pose a problem? Would that help performance at all or no?

Am looking to buy these today :bigthumbu

vip09
10-25-2007, 08:15 PM
You are correct. The higher the number, the colder the plug.


*Edit: You should be fine with the heat range 5 plugs unless you have a 5s-fte setup. The 3S-GTE OEM Plugs are heat range 6.

celicaGT90_05
10-25-2007, 09:01 PM
I just swapped out my plugs, had bosche platinum 4's and put NGK v-power in, and the v-power was a lot better and a lot cheaper than the bosche's, they are a good plug

Hookecho
10-25-2007, 10:53 PM
You should be fine with the heat range 5 plugs unless you have a 5s-fte setup.

x2