So what you guys are saying is dont tourch revo lol

Not saying that atall dude. Its just my car that happens to not work with the software. Fluke that its happened to lots of others aswell. Duno why they won't sell it any more. Must be making it better somehow but can't see how it was a perfect map. Nothing possibly wrong with it. But if you was to get a problem its all good cos Paul and Kev wont speak to you directly just pas messages via the new receptionist that hasn't got a clue what she's talking about. P.s when you ring always choose the sales number. The tech help line is never answered. Probably due to them sitting in the garage working out how to screw the next engine up.

This is the reason I have never been a fan of REVO. No doubting the performance of their maps, they are always one of the top contenders, but once you have bought the map, your on your own.

Out of interest, how could a map cause high sump pressure?

I think the high sump pressure is possible on standard vrs this causes the blow by on the piston rings and there by the high oil consumption. But like i say just wot i think is going on amd this breather mod is trying to stop this pressure build up