Run it for a few minutes after you install it and check ur plugs. Then you will know. More than likely you should even though its only a small power gain. Try visiting bansheehq.com and ask them.
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2004 Yamaha Banshee
2008 Yamaha R1
2002 Yamaha R6 (Sold)
1996 Ford Explorer XLT 5.0 AWD
2001 Ford Ranger XLT 3.0 2wd