Hi, not sure how best to describe the issue I'm having but the if say I slow down to go round a corner in second gear, when I begin to accelerate gently the car will kind of lurch forward momentarily before dumping boost (I have a S2000 filter so can hear it) It's not massively violent but sometimes more noticeable than others. The N249 valve is currently bypassed but still electrically connected. This did seem to smooth things out a bit but only temporarily. I haven't checked for fault codes recently but its been acting this way a while and hasn't thrown any previously. Any suggestions on the likely cause?
