Since I replaced the turbos, I've had a little bit of oil here and there in the engine bay still, which I isolated to the BOV and a joint in the charge pipes (on opposite sides of the bay). Weird, I thought, since there's no oil in the turbos.
So yesterday I tore the entire charge system off the car and found that the intercooler had some oil in the bottom of it from the old setup, which was getting stirred up occasionally and aersolized out of the BOV. I soaked all the charge pipes in my vat of Simple Green (everyone has a vat of that in their shop, right? haha), then hand washed/dried them. The intercooler got a 3 step process with a gasoline flush, then a simple green flush, then a water flush. Everything is squeaky clean and no more oil in the bay after a few drives. Hopefully that's the last of the "oil in random places" game.
I need to get back under the car soon with some degreaser and clean up where oil coated some things and messed up the suspension paint in a few areas, though at least the current light film of oil will prevent any rust, hah.
I've also been working on the tune on the car. I found that my cam control profiles are messed up because my oil pressure is super high with the GT500 pump/billet gear upgrade. That means my PWM duty cycle on the cam solenoids is too high, so I'm slowly dialing that in. I'm also working on the fueling which in inexplicably different with the Nexus R5 vs. the old Elite 2500. Still don't know why, but I'm chasing it down slowly by working through steady state areas bit by bit. The R5 also uses a MAP Prediction/Fuel Pooling transient fuel strategy which is a self-learning function that takes a little time to learn, but it seems to drive very nice. The car is finally dialed enough that sub 4000 RPM runs VERY smooth and I'm within a half point or so of target AFR before trims.
I was excited to take the car to class last night, but noticed it was going dead lean when I stabbed the throttle, which was weird because I'd just added fuel in that area and it should have been only a tiny bit lean at most.
"Weird" I said to myself, like an idiot. Saved the data log and figured I'd look at it later. Then about 2 miles later it went lean at low throttle. Then at cruise. Then it died. Then I noticed I had no fuel pressure.
Gas. You have to put gas in these cars. LOL. At least I know why it went lean when I hit the throttle.
While I was on the side of the road waiting for a buddy to bring me a gas can, a nice cop stopped to see if I was alright. He also has a Mustang (2015) and his plates are almost the same as mine "COYOT3" on his vs. "COYOTT" on mine. I ended up showing him around the car for 10 minutes, haha. Once I put fuel in the car it worked much better. Weird.
