Phila67 Posted February 29, 2016 Share Posted February 29, 2016 Can anyone recommend the best spark plugs for my 2003 WRX. Mapped to 280 (don't know if that makes a difference) Thanks Sent from my iphone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Scoobyghost Posted February 29, 2016 Share Posted February 29, 2016 NGK laser platinum PFR6B or 7B Quote Link to comment Share on other sites More sharing options...
Phila67 Posted March 1, 2016 Author Share Posted March 1, 2016 What's difference between 6b and 7b? Sent from my iphone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Scoobyghost Posted March 1, 2016 Share Posted March 1, 2016 7b are slightly colder and better suited to higher boost and modified cars. Quote Link to comment Share on other sites More sharing options...
Phila67 Posted March 2, 2016 Author Share Posted March 2, 2016 Would the 6s or 7s be better for me. Mapped to 280 with 1.3 bar boost. Sent from my iphone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Scoobyghost Posted March 2, 2016 Share Posted March 2, 2016 Go for 7B. I'm mapped to the same as you and was advised 7 would be better. Quote Link to comment Share on other sites More sharing options...
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