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  1. VW Jetta / Bora MKIV 1998 Euro,1999.5 US -2005
    okay so my car is on unitronic stg 1+, was just about to go to stg 2 but now i ran into a problem. ive always noticed that when i would hit 20+ psi, boost would surge very rough, BUT it would only surge when you would engage boost when the rpms are low, i.e. if youre in 5th doing 55 or 60 and...
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