i bought an 04 660 that had a GYTR slip-on exhaust and K&N filter and stock jets. the thing backfired like mad and ran pretty hot so i ordered the vito jet kit for it. im running #25 pilot, needle on 3rd position, 150L/155R, 2 1/2 turns on air/fuel. it doesnt backfire as much now but i still get some on deceleration so i figured its still lean. when i pulled the plug its pretty black.... so is it running rich or lean?
also with this vito kit, it comes with new needles and clips, should i use those or the stock ones? i didnt think there was any difference in them so i kept the stock ones.
also with this vito kit, it comes with new needles and clips, should i use those or the stock ones? i didnt think there was any difference in them so i kept the stock ones.