Hi Guys,
I have the 175THP in a peugeot 207 GTI in Australia.
I did the PCV delete about 6 months ago and the car runs quite well, power hasnt dropped off as it would normally do after a service.
I do have a small issue with additional engine noise when applying light throttle off idle. This is typically when driving off from a stationary position.
The noise is like a little rattle, i changed the oil with 0-40 fully synthetic the other week and the noise went away for a few days.

I put the PCV hose back in this evening and the noise off idle seems to have disappeared.

Has anyone experienced this before?
I am taking the car in for service with Peugeot again this Monday, i dont want to mention the PCV delete just in case it voids the additional warranty i purchased.
The cylinder head has already been replaced a couple years ago due to coke build up. I've also have the timing chain pretensioner replaced, all under warranty.

My mimi cooper s r56 had the same problem and went to mini glasgow and was told stop using normal fuel and start using high octaine fuel like V-Power and the problem went away and it hasent come back. Best of luck guys