Originally posted by b.walker5
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The 4 degree advance mod takes about 3 minutes and is a bolt on timing plate thing which replaces the OEM one. It looks identical to OEM except for the projecting metal tab which fires the coils. Here's one.... http://www.ebay.co.uk/itm/YAMAHA-XJR...item231df411e4 I don't think you can do this mod thought if you have the fuel injected version....
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