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Yamaha YZF 1000 Thunderace discussion forum:RE: running slugish |
| RE: running slugish |
| Aceinthehole said 2004-05-17 16:07 |
| Adjusting the Exup is a cake walk, remove your tank, you will see the exup control box mounted to the inside of the frame...its a little black box with two cables running to it. NOw you must expose the exup valve itself, it is in the exhaust near your foot peg, you will see a cover being held on by 3 bolts, take this cover off and you will see the exup with the two cables running to it. Ok, at the control box under the tank, the cables have tightening screws, loosen these so the exup can be moved by hand, in the exup itself you will see a hole, behind it is another hole, you need to move the exup so that the two holes are lined up. When you have them lined up, try to find a nail, or allen wrench the same size as the hole and stick it in there to hold it in that position while you tighten the cables. After the exup is secured, go back to the adjusting screws at the control box and tighten the cables so that they are snug, but not over tightened... and they should be evenly snug, one should feel just like the other. Once you have them snug, remove the nail from the exup, then turn your ignition to the on position, you will see the exup open slightly... when you turn the key back off, the exup should go back to the closed position where the holes are lined up. If it does this, it is adjusted properly..if not, you have one cable too tight or loose. You should check your exup atleast once every two seasons, or every 5000, to 6000 miles....cables stretch and throw your exup off. NOTE: I have an after market exhaust, Stage 1 jet kit, K & N Filter and modified airbox... My exup was adjusted for optimum performance while the bike was on a dyno... it was set so that the holes are about half off center, and the exup was slightly open when the ignition was in the off position. If you have the same mods as me, you may want to set yours the same....this decreases the back pressure slightly. |
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