Bucking when accelerating from stop

[Enki]

I wouldn't run two cans in line like that. If you absolutely had to for some reason, at least get rid of the 2 90s and replace it with a sweeping bent hose (no kinks) as that will help keep velocity and flow high.

Ideally, if you need to use two cans, you should plumb them in parallel.

In any case, your issue might very well have to do with your PCV check valves.

 

[drew10101010]

Agreed. It's not ideal but I did it only cause of budget. Otherwise I would've just bought a nice Damond or JBR can. It seems to be working fine as I'm finding it catches a good bit of oil, water, fuel. The second can in line catches about 1/2 to 1/3 the amount of the first.

I'll reinstall the pcv plate block off plugs and report back.

 

[Enki]

Do not boost without adequate PCV venting. You will, without fail, push oil out of your engine wherever it wants.

Including your turbo, which will make you think you blew the engine.

 

[drew10101010]

I have a CFM oil cap breather.

I only added the extra vented can about idk 1k miles ago? I've had the cfm breather the whole time.

 

[Enki]

Well, uh, don't put your dick in it.

 

[drew10101010]

 

[drew10101010]

Enki, you're a mad genius! I blocked the VTA ports at the plate and it seemed to fix all bucking until I went WOT and it came back. I notice a lean spike and g/s spikes as well. Added log, it was in 2nd gear.

 

[Enki]

Pull all your PCV/check valves for your catch can system and clean/test them. At least one of them is sticky.
Make sure you put them back in in the correct orientation.

 

[drew10101010]

Well It's fixed now thanks Enki and Easter Bunny.
I finally got a code P2088 "camshaft position actuator A control circuit low (bank 1)" so I looked around and finally found that the loom was shredded from rubbing against the serpentine. I patched it up and it's running perfect now. Should I get a touch up tune for the new downpipe and fixed wastegate leak? It seems to spool faster. I'm tempted to reinstall the VTA can. The wiring diagram was extremely helpful. Just went for a drive and did some 2nd and 3rd WOT redline pulls and seems good. Also did an oil change at 3k miles. The engine bay noise sounds very smooth. Oh also made a new connection for the two catch cans - long looping hose. It had to be super long not to kink. It reaches the starter. I wanted to check the PCV valve but it's very hard to get to.

 

[Enki]

You'd think that would throw a code sooner.

 

[drew10101010]

Yeah no kidding. I was blowing fuses though. ENG BAR2 at first one time then ENG BAR 3 times. Also taped up some exposed wires on other connectors (evap, boost solenoid)