pull plugs sounds like not all cylinders fireing. Could also be tb's need to be sync or coil packs. Check that stuff first.
2010 Toyota Tundra TRD Rock Warrior (His)
2008 VW GLI (hers when I'm not with her)
2009 Yamaha R1 Raven (His)
2008 Yamaha Raptor 250 (hers)
2005 YAMAHA R6 Raven (His Track bitch #1)
2004 wr250f plated Blown Motor (Hers if she wants to ride it)
2004 Wr450f Motard (His Track Bitch #2)
2001 Trek 7000 MB
If Yamaha Made a car/truck I'd have one of those also.