Re: PT Turbo lite exhaust size. 2.5" or 3"?
Stock turbo exhaust pipe is 2" id pipe. I went with 3" o2, 3" downpipe with 3"CAT, 2.5" CAT back. All stuff off ebay 5+ years ago. 
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2004 PT PLATINUM Lite
Auto | S1 | 1025cc injectors | AFE Stage 2 Pro 5r | Hexalogger | S2 wastegate controlled by PCM | 3"o2 | 3"cat | 3"DP | 2 1/4"catback | plastic intake | W/I | DSP Duster360 E85 & gas tunes | Black ES MM Inserts | big 16G stocker | Boomba BOV
13.49@104.38(1/4 tank E85 fuel, w/i, 1025 injectors, back seats and spare out, 17" street tires, BWS turbo, DSP controlling S2 wastegate)
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