I've have had my plated 99 WR400 for a couple of months now and my best friend just baught a plated one today . Now that we both have the same bike we would like to use one to modify and test against the other for a true reading on the perf. mods we make . Before we start go buying bolt ons. Can anyone tell us of some perf. mods to start with that don't cost anything . IE carb adjusts, exhaust tinkering etc. Thanks guys and I will post the results. It will finally be nice to mod one and ride the other stock one for a true feeling of the difference.