hi there i have a 2007 st3 with 38,000 miles the car has what seamed like a misfire on low revs seemed to improve when driving harder. Its some times backfires. I took it to a garage and he say the fault code po236 turbo boost sensor circuit a performance keeps returning. Any ideas has anyone had a similar problem?

 

probably the boost solenoid bolted to the turbo, about £40 from ford.

 

Thanks for this will order one