Phila67 Posted February 29, 2016 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
Phila67 Posted March 1, 2016 Author Posted March 1, 2016 What's difference between 6b and 7b? Sent from my iphone using Tapatalk
Scoobyghost Posted March 1, 2016 Posted March 1, 2016 7b are slightly colder and better suited to higher boost and modified cars.
Phila67 Posted March 2, 2016 Author 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
Scoobyghost Posted March 2, 2016 Posted March 2, 2016 Go for 7B. I'm mapped to the same as you and was advised 7 would be better.
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