Has it got its original boost pipes on? if so I would seriously consider spending the £200 or so and getting Roose motorsport ones on it.the O ring from intercooler to the cross over pipe also needs a pipe putting over the whole connection to future proof it,look on s2forum for 'mark H mod',replace all the small bore vac pipes at the back of the engine aswell
there are literally hundreds of threads on s2forum of people having on going boost problems,a good amount would have been solved instantly with a new set of hoses
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