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joeSRI
21-07-08, 04:50 PM
How do you calibrate your speedo? I went through one of those speed display things and it said 27mph when on the the dash it was around 32. it a 91 GSi

cheers
AlexW
21-07-08, 05:04 PM
They overread from factory, It law iirc
Andy
21-07-08, 07:56 PM
Thats nowt my speedo over reads by 15mph lol