Hi all. Im after a bit of advice. Ive a98 s4, no cats and from there custom exhaust. Just rolled over the 130000 mark, always service with history etc. Ive an audi liquid computer in the air vent. multi gauge, diagnostics etc. The boost gauge on above says im makin .8bar.. The car doesnt seem to be that quick. I bought it in limp mode, replace everything necesary to solve this. Car ran great afterwards.. Would it be worth my while stripping it down to investigate the various hoses? And whats standard boost on the s4?