So I think I blew a seal. Full exhaust dp back(mindtrain). Cone filter are the mods. Had but 87 on accident over boosted fuel cut kicked in heard a ping ping. So the reason im queastioning a seal is beacuse it has full power drives fine but has a rough idle. no smoke at start up or otherwise oil temp is normal water temp is.normal.

 

do a compression check to make sure. if that's fine you might have just popped a vacuum hose.

 

Ok did a compression test I got 100psi on the front rotor and 75psi on the rear rotor. What's normal? I just found a motec printout that the previous owner had done aug of 2010 they were reading 103.7 on the front and 104.1 in the rear.

 

Thats pretty low on the rear.... Not sure if my memory is right, but somewhere around 95+ is where you want to be.