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55 Posts
hi all, i've got a gtst which i'm slowly tuning, i've just had a turbo elbow, downpipe and de-cat fitted my question is... before i had this fitted my car showed only .5 boost on the gauge all the way through the rev range. now i've had this stuff fitted i still get .5 boost up to 5000 rpm, then i get .7 boost up to 7000 rpm. any ideas why would be appreciated many thanks. scott