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Author Topic: 1.8t: electronic SUV via N249 output  (Read 138104 times)
TijnCU
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flying brick


« Reply #45 on: January 22, 2015, 01:12:06 PM »

Because I need to build ny new turbo inlet pipe first (with a 35mm connection for the dv dump), I decided to upgrade the adapter housing  Wink need to sand it down to finish it a bit but the path of airflow has much improved.
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thelastleroy
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« Reply #46 on: January 24, 2015, 05:02:21 AM »

My replacement-replacement-replacement valve has been returned to the vendor for some sort of shipping error. They actually sent me a message asking if I still need it. They are sending........a replacement.
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fknbrkn
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mk4 1.8T AUM


« Reply #47 on: January 24, 2015, 11:39:51 AM »

you are lucky
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ddillenger
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« Reply #48 on: January 24, 2015, 11:53:47 AM »

haha-that sucks.
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TijnCU
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flying brick


« Reply #49 on: January 24, 2015, 12:17:06 PM »

I will make a log tonight, dont have the valve in yet but my original n249 is connected.
I will log b_ldsuad, b_ldsuas, pvdks, pu, wped, wdkba, fho, rl, rlmax, rlsol, nmot, mshfm.
N249 maps are stock 225hp.
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thelastleroy
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« Reply #50 on: January 24, 2015, 09:10:34 PM »

you are lucky

haha-that sucks.

SRSLY. Everything I've ordered online (from anywhere) in the last month has totally shit the bed. I'm going to stop shopping online for a bit and see if the luck changes.
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TijnCU
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flying brick


« Reply #51 on: January 25, 2015, 01:35:21 AM »

2 logs, first log is some driving in the city. Second log is a swift acceleration through 3 gears. Make sure you set the filter correctly (pedal 0%, gear -1, rpm range 1, min rpm 700, throttle 1, points 1) and X axis set to TIME for a total view.
example jpg about cruise conditions.
« Last Edit: January 25, 2015, 02:13:13 AM by TijnCU » Logged

TijnCU
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flying brick


« Reply #52 on: February 03, 2015, 03:30:20 AM »

Fukenbroken, how is the valve holding up? I think it can also be used to counter compressor surge during spool-up.
My tip is coming together slowly, need to add the pcv and n75 connections and weld the last bend in. Hope to finish this week.
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fknbrkn
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« Reply #53 on: February 03, 2015, 10:03:44 AM »

sorry my english isnt good, can you explain what you mean by counter compressor surge during spool-up ?

i assume that its a charge pipe at the bottom side of a picture? this dv doesnt work in that position because a very light spring inside of it and dv will be opened by any positive pressure with and without signal, you can check it by creating pressure with your mouth. you should rotate it or use gofastbits upgrade but its expensive..



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TijnCU
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flying brick


« Reply #54 on: February 03, 2015, 12:04:31 PM »

I mean you could open the valve when the turbo is spooling when you have surging, without lifting the throttle.
The dv is connected to the inlet pipe on the photo, the charge pipe is on the thinner blue silicone. It is 25mm on the charge side and 35mm at the dump/ turbo inlet.
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fknbrkn
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« Reply #55 on: February 03, 2015, 12:59:28 PM »

surging when turbo spooling? its PID problem and dv is not the answer in that case Undecided
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TijnCU
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flying brick


« Reply #56 on: February 04, 2015, 01:06:53 AM »

I am just brainstorming here, but I had the idea you could (in a big turbo/small displacement engine) help "launch" the turbo up to speed by dumping a bit of pressure during spool. (Less restriction to the exhaust, create momentum in the turbine). But this is only a theory and I dont have a test platform  Roll Eyes
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TijnCU
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flying brick


« Reply #57 on: February 22, 2015, 02:03:31 AM »

Its in and it works! Good response and nice sound, just a bit of flutter on light boost.


Placement of the dv could have been better, its a bit tight now, but it will do for now.


I can clearly hear it stay open on light cruise, the intake is actually louder under those conditiona then when I'm requesting say 1200mbar Tongue
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fknbrkn
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« Reply #58 on: February 22, 2015, 03:06:59 AM »

if you using tfsi coils - get these adapters VAG 077905390

here is the log we taken few days ago with e-dv with dv+ installed (its 6000 rpm and 1.45 bar = 21 psi boost)
still waiting for warmy weather to make a comparison between stock n249 / aeb-style dv connection (directrly to manifold) / e-dv / e-dv+

« Last Edit: February 22, 2015, 03:11:44 AM by fukenbroken » Logged
TijnCU
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flying brick


« Reply #59 on: February 22, 2015, 12:07:14 PM »

Yeah I need to make the adapters for the coils. I just pressed them in for now, they havent come out yet. I was thinking about 3d printing them, just need to draw them first Grin
I have made a small video today, thought I'd share it here too. sound quality sucks but you can kind of hear the DV in action  Roll Eyes
http://www.youtube.com/watch?v=MHQ2ZN2hyMo
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