Hey, hope your days doing well

2010 gsr is burning oil, was curious if the car just does that, or if something like the ccv or pcv could’ve gone bad, and how’d you’d check it, open to any other ideas as to why it could be, haven’t checked anything other then the dipstick and the fact there’s oil residue on the trunk, she does have a borla cat back exhaust with no cats in it, if that would be a factor.
Cheers!

 

Well if its burning oil that its supposed to be happening. I would run a leak down and compression test to check the health of the valves and rings.
It could also be a crankcase ventilation issue or bad turbo seals but you'll have to so some checking to figure out where its getting burned