[Rui725]

Problem actually NOT fixed by new MAF(Update):

I left my car sitting for 2 days and it started up with the old, nagging sputtering problem. The indy Porsche mechanic already told me he isolated and fixed the problem, I'm not sure how I should approach him now. I have pending codes for aging O2 sensors, but they are still functional. Could this be the culprit to my start up woes? Did he cheat me? I'm in a lose lose situation as this is the only indy porsche mechanic and I've been going to him for 2 years now.

All my recommendations about the battery and such and from other bits and pieces of information I got off the forums were all disregarded by the mechanic. He gave me the, "are you going trust me or the internet" look and tone. I simply asked him to do a simple battery test and he said there was no need to do it. I don't have the necessary equipment at home to do any of the recommended tests either. Any advice is appreciated, I'm not sure if I can trust this shop anymore.