sideways500

right just had a hybrid t4 fitted to my rs500 to bring it back up to the original spec as it was runing a t34 also at the same time ive had a ported head fitted and a new custom exhaust fitted.
had the car in to be mapped today and the mapper says there no useable boost till over 6K comparin it to my t34 graph its over 100 bhp down at 4k this dosent seem right at all the first thing i fort it could be the garage that fitted the head have not timed it up right ??

any help or advice welcome cheeRS

mechanic28

iTrader: (5)

where did u take it too be mapped?? poss cam timing out seems unlikely that u have no ggod boost until 6k

sideways500

i took it to my usuall mappers and have never had a problem with them