Spark plug Champion or OEM Subaru
going on almost a year on champion $1.99 copper plugs and my car runs just as good if not better than when I had the oem plugs in there...
the Champions are really surpassing my expectations!
I bought Champion Copper's....they're like $3 a pair, and she pulls like a SOB. I just replaced the Champ with the exact same....save ur hard earned $$ and spent it on wax or lights or some other accessory to make her stand out
car has been running with champion plugs so thats what i put in and it reved to 6500 just fine......the car likes the new stuff i put in a lot.
STAY AWAY FROM CHAMPION SPARK PLUGS they tend to have a insulator cracking problem
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