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  1. VW Jetta / Bora MKIV 1998 Euro,1999.5 US -2005
    Hey all, So I have a couple questions. Was thinking of doing a custom turbo build (find bits here and there instead of a kit) And was wondering a few things, like what psi could I run safely as this is my daily? Would I need a new ecu? or could I just go and get a custom tune? If there is a...
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