I'll probably only go to the track this spring once I at least a CAI/pulley/tune. On a side-note has anybody had any issues going with a 61mm pulley in the long run? I'm still undecided between the 61 and the 64.7, seems like a few members got the larger one only to go with a smaller one later on. I really don't want to replace the crank pulley instead because running a stock one is the best bet as I don't want to change the weight and have a higher rotational inertia, it just makes more sense to replace the supercharger pulley instead. Could I go with the EC 61mm tune if I get the new 62mm pulley?