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Old 03-06-2018, 02:20 PM   #426
t8fanning
8v are still cool, right?
 
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Active as in hooked up and energized. Not active as in I tell it to keep the wastegate open.
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Old 03-06-2018, 02:21 PM   #427
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Just disable it in TS and see what happens.
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My knob has a big chunk of steel on it
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Old 03-06-2018, 02:22 PM   #428
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Damn, this car is awesome. Cool to see someone so committed to an 8v!
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Old 03-06-2018, 02:23 PM   #429
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Yeah, I should do that. I'll do that when I bypass the solenoid to test.
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Old 03-06-2018, 02:25 PM   #430
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Damn, this car is awesome. Cool to see someone so committed to an 8v!
Who needs 16 when 8 will do the job? It's just extra weight lol.
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Old 03-06-2018, 02:34 PM   #431
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Damn, this car is awesome. Cool to see someone so committed to an 8v!
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Old 03-06-2018, 02:35 PM   #432
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And most of them are in Sweden doing actually fast cars.
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Old 03-06-2018, 03:02 PM   #433
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Old 03-06-2018, 03:42 PM   #434
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Damn, this car is awesome. Cool to see someone so committed to an 8v!
Agreed! Love this build. Angry UPS truck drivers unite! (Not that my car is in the same class of 8v build)

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Old 03-07-2018, 12:46 AM   #435
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Messed with it a bit and figured out why I was overboosting. My boost by gear target settings were overriding my pressure and duty cycle tables. So I fixed that, but now I get a pretty strong oscillation around my boost target in closed loop. I can pretty much hit my target with open loop, so I've got some more tuning to figure out.
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Old 03-07-2018, 01:22 AM   #436
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Remember that spreadsheet I sent you? Closed loop is a monster
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Old 03-07-2018, 01:44 AM   #437
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I don't remember the spreadsheet. But it was fine on my old turbo, I can figure it out again. Hopefully.
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Old 03-07-2018, 09:46 AM   #438
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Easy fix
https://m.ebay.com/itm/1-30PSI-ADJUS...oAAOSwAC1aPeUe
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Thank you very much everybody... i now feel sufficiently retarded and will go cry in the corner...
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Old 03-07-2018, 12:30 PM   #439
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That ****'s lantis-tier.
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Old 03-07-2018, 05:05 PM   #440
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Lol. I don't think speed_daddy quite understands what closed loop means.
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Old 03-08-2018, 01:05 AM   #441
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I'm getting closer in the tune. This is what it was doing at the start of the night. The green line is MAP and the white line is boost solenoid duty cycle. It's oscillating all over the place, giving me a very inconsistent boost level.



I changed a few things and got this:



It's much better and much more consistent. Response isn't insane, but I'm seeing a couple psi below 3k rpm which is pretty good. I haven't really tuned for quick spool yet either, just trying to maintain a smooth target boost level. I probably will increase the hose diameter from the turbo to the boost solenoid to try and improve wastegate response.
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Old 03-08-2018, 12:33 PM   #442
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What gear are you testing on?
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Old 03-08-2018, 12:34 PM   #443
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That log is second through forth.
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Old 03-12-2018, 02:32 AM   #444
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I did some tuning last night on e85 and upped the boost to 26 psi. Everything felt pretty good, but when I got home, I noticed I had some oil seeping out of my air filter. When I took the filter off, I noticed probably an ounce of oil pooled in my intake pipe right near where my catch can outlet is.

I'm using a yoshifab catch can with 3 stainless steel scrubbing pads for baffling. It's set up to drain back to the block and takes inputs from the oil fill cap and the crank case breather. The outlet is plumbed back to the pre turbo intake. Anyone have any ideas how to reduce the amount of oil going through my ventilation system? Should I just vent the catch can to atmosphere? I really don't like that much oil going through my engine.
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Old 03-12-2018, 10:14 AM   #445
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I had the same problem, to the point I thought I'd blown my turbo. I ended up putting a small piece of Scotchbrite in the Yoshi old cap to baffle it. At the same time, I also added a small vacuum line to the manifold like stock, though I know that only helps at idle.

Anyway, after doing that stuff, I don't have oil pooling in the intake anymore. Have you done a leakdown test?
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Old 03-12-2018, 12:11 PM   #446
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I haven't done a leakdown test, but maybe I'll have to.

Your idea sounds great though. I think the pressure is so low in there that it just sucks oil from the sump straight through the can.

So how did you convert from a -10 to a small vacuum line? You also hooked it up to the manifold so it sees positive pressure?
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Old 03-12-2018, 12:36 PM   #447
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I haven't done a leakdown test, but maybe I'll have to.

Your idea sounds great though. I think the pressure is so low in there that it just sucks oil from the sump straight through the can.

So how did you convert from a -10 to a small vacuum line? You also hooked it up to the manifold so it sees positive pressure?
I still have the stock breather box, so I put a tee with a 5/16 line (with a check valve) to the manifold right near the box. The other side of the tee is the -10 rubber hose that goes over to the catch can.
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Old 03-12-2018, 02:54 PM   #448
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I see. Glad to hear that works. I think I'm going to vent the can to atmosphere until I can figure out a more permanent solution. Maybe I'll have to do a restrictor in the tube to the intake.
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Old 03-13-2018, 12:42 PM   #449
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Not really what I wanted to see, but I put a filter on the catch can outlet to see what would happen, and it still pushes a significant amount of oil through the whole can. It's gotta be too much blowby or something. Probably should do a leakdown. I really hope I don't need new rings.



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Old 03-13-2018, 12:54 PM   #450
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Damn, that's not great news.
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