Because you can't do anything to scoobies (engine wise) with out mapping to cope! It may be a good idea to just splash out and get her running the way you want from the start! rather than one little mod every month for the next year and possibly killing your engine!
So I'd do every thing you want before the mapping to make the most of it, Because damo (renno)can only get the mappers over from the UK every so often!
I would at lease get Full 3" de-cat or sports-cat exhaust system and a good quaility iduction kit (crap ones kill your air flow meter) that should be good for maybe 330-340 horsies!after mapping with half bottle of lucas per tank :headbanger: If thats not enough for you PM damo (renno or davelegacy) for more advise!
Best of luck man and get some pics up!
Dan