AS everyone knows the N14 engine has a problem with carbon/coking on the intake valves. This is caused by the PVC system. It has two vents on the valve cover, one on the driver side going to the turbo and one on the passenger side going to the intake manifold. Some people plug the vent going to the intake but then all the crankcase pressure is going to the turbo, also this causes the engin to leak oil because it is not venting well. Ask me how I know. Some people run two catch cans. The Helmet has one catch can going to the turbo , the other vent was blocked off. I had to remove the block because it was causing oil leaks, I plan on adding Meth but that is down the road. Short turn I may run a second catch can. So I noticed on @BlwnAway build it looks like he is venting to the atmosphere, you can correct me if I am wrong. In the old days we vented to the atmosphere all the time. Some say you you should not do this. If I vent them both to atmosphere it will solve the carbon problem. I can run both the PVC pipes to catch can then filters. I don’t have to go through inspection. Can anyone think of a reason this will not work. @Tigger2011 what did you do on your R58.