I have been lookin all over for a Pro-M MAF. I finally found one last night. The only problem was that it was $429. That seems really high tp me. Would i be better off buying a Granatelli or a C&L? Also i wanted to advance my timing today before i go to the track on monday. is it 12-14* total timing or an advance. I know every car is a little different. But what do you guys advance urs to?