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well, i've not a lot of experience w ppi's but i'd suggest they vary in detail depending on who does them (ie, there is no set script for these things). personally, i'd have no problem having the same shop that has serviced it do the ppi, and also have a conversation with them about the car - they know it best. any shop can do the compression, etc., stuff, but you need a specialty computer for the computer stuff - if the indy is as renowned with porsches as stated then they should have this.
again, i've not a lot of experience with this; hopefully the collective IQ will chime in.
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