Hello everyone! I'm new to this forum but from what I see it looks great! I have an '04 Mean Streak with hard krome 3" big straights and a K&N. Here's my problem: I bought a powercommander to help rid my bike of a wicked backfire at 2000RPM on trailing throttle and also for the other obvious gains. When I hook it up to my laptop the RPM on tach and on the powercommander differ by ALOT. At idle(700rpm), the powercommander module says its at 1800rpm and at 2000rpm(tach), it reads 4000 rpm. Has anyone experienced this or did I do something wrong hooking it up? Also, if anyone has any advice on the backfire help would be appreciated. Thanks!