Big turbo kits

[JPuehl]

Hey Wheela, I'm not going/trying to hi-jack your thread but wanted to let you and those following this thread know that I'm working on setting up the boost solenoid and TurboSmart WGA as you have mentioned in your research/testing. I'll share my results since it may be helpful to you and others wanting to use the DME to control higher boost levels with a pressure based solution, since it seems even a Pure Turbos HDWGA is no match for higher exhaust manifold back pressure. And BTW, I'm going to start with the boost solenoid that's stock for my application, which should be the same as yours, since the "cover" on the vent port can be removed to expose the 3rd port.

[CalvinNismo]

Originally Posted by JPuehl

Hey Wheela, I'm not going/trying to hi-jack your thread but wanted to let you and those following this thread know that I'm working on setting up the boost solenoid and TurboSmart WGA as you have mentioned in your research/testing. I'll share my results since it may be helpful to you and others wanting to use the DME to control higher boost levels with a pressure based solution, since it seems even a Pure Turbos HDWGA is no match for higher exhaust manifold back pressure. And BTW, I'm going to start with the boost solenoid that's stock for my application, which should be the same as yours, since the "cover" on the vent port can be removed to expose the 3rd port.

Have you looked at the Turbosmart 6inHg actuator? There is an extra port the other side of the diaphragm to boost assist the vacuum pull. Not sure how you would regulate/control this though.

[JPuehl]

Originally Posted by CalvinNismo

Have you looked at the Turbosmart 6inHg actuator? There is an extra port the other side of the diaphragm to boost assist the vacuum pull. Not sure how you would regulate/control this though.

No I haven't looked into that WGA, I choose the route I mentioned because of the below post and Wheela's research on the/a solution.

https://f30.bimmerpost.com/forums/sh....php?t=1656323

I got the WGA swapped last night and will slowly start testing and tuning it. Fingers are crossed this will work.

[wheela]

Originally Posted by JPuehl

Hey Wheela, I'm not going/trying to hi-jack your thread but wanted to let you and those following this thread know that I'm working on setting up the boost solenoid and TurboSmart WGA as you have mentioned in your research/testing. I'll share my results since it may be helpful to you and others wanting to use the DME to control higher boost levels with a pressure based solution, since it seems even a Pure Turbos HDWGA is no match for higher exhaust manifold back pressure. And BTW, I'm going to start with the boost solenoid that's stock for my application, which should be the same as yours, since the "cover" on the vent port can be removed to expose the 3rd port.

Hey Jpuehl, not thread-jacking at all! I'm looking forward to seeing how this works out for you, at the rate my project is moving you'll definately have real-world results before I do! That's great news about the stock solenoid, I didn't know that filter was removable with a hose barb underneath it

[wheela]

Originally Posted by JPuehl

No I haven't looked into that WGA, I choose the route I mentioned because of the below post and Wheela's research on the/a solution.

https://f30.bimmerpost.com/forums/sh....php?t=1656323

I got the WGA swapped last night and will slowly start testing and tuning it. Fingers are crossed this will work.

[JPuehl]

Originally Posted by wheela

Hey Jpuehl, not thread-jacking at all! I'm looking forward to seeing how this works out for you, at the rate my project is moving you'll definately have real-world results before I do! That's great news about the stock solenoid, I didn't know that filter was removable with a hose barb underneath it

Chris (CStokes) actually gets the credit for dismantling a stock boost solenoid. It's supposed to rain here this afternoon but not tomorrow so I'm hoping to start testing with a lot of boost being sent to the boost solenoid to see if it's worth moving forward, or if I need a pressure reducer on the line going to the boost solenoid.

[s911108]

Originally Posted by wheela

I tested this valve by connecting the boost supply to the valve's vent, and venting the valve's vac port. And it works!!!😎 This will allow external wastegate control by the DME with no external boost controllers required!!

Usable duty cycle range is about 15% to 100%. It's pressure output is quite linear between 15% and 100% duty cycle. At 100% duty cycle, it reduces boost pressure by around 13.5 psi or so. Should be plenty to work with either the 10 psi or 12 psi wastegate springs I'm considering using.

I still have some details to work out - since it's only rated for vacuum (worst case pressure differential across the diaphram of about 14.7 psi) I don't know how much over-pressure it will handle in my configuration. So I'll incorporate either some kind of regulator upstream of it, or a relief valve after an orifice in the boost line venting back to the intake to keep boost pressure hitting the valve below a 14-15 psi.

Attached are some videos of it in action, as well as pressure output vs. duty cycle graphs I made at various boost (supply) pressures from my air compressor.

https://youtube.com/shorts/wrlMIbDpVW0?feature=shared

https://youtube.com/shorts/a-38I7Qniy0?feature=shared

Hi bro, I want to get my N20 PWG to 22 psi of raw turbo pressure. Do you recommend I use Pierburg 7.01024.02.0 or Pierburg 7.21903.70.0?

[wheela]

Originally Posted by s911108

Hi bro, I want to get my N20 PWG to 22 psi of raw turbo pressure. Do you recommend I use Pierburg 7.01024.02.0 or Pierburg 7.21903.70.0?

Hi, I responded to this question over in the other thread you created on the other forum

[wheela]

Originally Posted by wheela

So my plan B, may actually turn out better than plan A. I got a 3D scanner so I can get an accurate digital model of all these components. Then I'll design my own inlet in CAD and get it 3D printed from an appropriate material.

Been making some progress on inlet design. Definately not done, but things are moving in the right direction.

Also figured out a slight tweak for water pump placement to clear the larger EFR 8374 turbo.

[AmuroRay]

Originally Posted by wheela

Here's some kit pics! The turbo's on back order, no eta yet.

Work of art

[wheela]

Thought this thread was due for an update, still inching forward.

I wasn't 100% on that last inlet design, so I've abandoned that design and created a new one. I've also decided to update both the turbo inlet, and the air duct pipe between the turbo inlet and the MAF housing, as the stock air duct pipe necks down quite a bit in the middle.

I took some scans of the car, and modeled the Speedtech outlet tube to ensure everything fits properly. The inlet pipe is 3.5" equivalent at the smallest crossection. It will mate to the upper pipe with a 3.5" Vibrant HD clamp (weld ferrules epoxied into the 3D prints). The silicone coupler end that mates with the turbo inlet will have an aluminum tube support built into the print under the barb to ensure it withstands forces from the hose clamp when hot. The upper air duct pipe design is still in process, but it will include a connection for the stock PCV tube.

I'm planning on printing these in PPA-CF, and sealing the prints to keep them air-tight.