Hello, I have recently bought back my Ibiza and it had been badly messed around with. Due to needing urgent work I haven’t driven it yet. Anyway I noticed that dump valve is missing it’s vacuum hose and it looks like it has been looped back into Solenoid valve (might be wrong but looks like N75) anyway can anyone tell me why they have done this and if I put pipe onto dump valve what goes into front of valve? Cheers