[Turbo Tommy]

So is it the turbo itself that requires more upkeep? if so, then I would say getting the S2 or S3 (don't these systems replace the turbo with a larger one?) That being the case, perhaps waiting till you get some miles on the turbo would make more sense to replace with s2 s3 later down the road, does that make sense? gary

Ok, the whole motor has more stress on it under boost, each power stroke is much more forcefull than a naturally apirated motor, but the turbo must be maintained too. The only benifit of changeing to a larger turbo is if you are trying to supply a higher level of boost. The stock turbo is capable of 18 psi +or- . A larger turbo can move more air and therefor supply high levels than the stock, however it will have more lag due to it increased size, so it will not spool as qucikly. I would say, if your happy with factory or stage one your factory turbo is just fine. If you want to go to some insane boost levels, get a bigger turbo, and definitly make sure you have upgraded fuel system too, you don't want to go lean.