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Monday, 26 December 2022

UL Power - Turbo Pressure and Wastegate Pressure Ports

The UL Power Installation needs a couple pressure ports for sensing.

  • 1 is plumbed from the throttle body to the ECU (aka turbo pressure)
  • 1 is plumbed from the throttle body (which appears to be at the same point as the above point) to the boost controller (aka turbo pressure)
  • 1 is plumbed from the waste gate to the boost controller, but it is T'ed in with the above line coming from the throttle body (I believe this is turbo pressure, mixed with waste gate pressure)
  • The Aux box has a port that needs to be plumbed to a static source.  I am NOT plumbing this to the main static system, due to the Canadian regs requiring a 2 year pitot static test.  I will probably end up plumbing in a 2nd static system just for this line, but that is TDB currently (this one is just ambient pressure)
The bizarre part of this... the lines for the ECU and boost controller are different types.
  • ECU:  Appears to be a standard AN3 fitting with stainless steel braided line.  
  • Boost controller:  Silicon hose.  2 ports on the boost controller, 1 to the throttle body and the other to the waste gate.
This is the UL documentation (just one page that attempts to show it all):


The engine comes with the hose and ends, but nothing to bridge the firewall.  I used an AN-3 bulkhead fitting.  Before anyone gets all judgementy on me, my plexiglass firewall is still in place so all of this is considered mock up.


Connection to the ECU (looking down from where the forward windscreen would be).


Engine connection


For the two lines coming from the boost controller (one to the wastegate, and the other to the throttle body), since they are just 1/4" hose I use qty 2 AN-4 bulkhead fittings, with qty 4 Phenix push on fittings.  I used these on my header tank, and they are impossible to get off.  And I mean impossible.


These two fittings are outboard of the firewall accessory frame (which lines up with the cage tab mounting inboard of the engine mount.  Almost a straight shot from the boost controller sitting on the shelf, just aft of the ECU)/

All of this is just temporarily attached for overall fitment.

One more day until the engine comes off (fingers crossed, weather dependant).

What's left to do tomorrow:
  1. Throttle firewall penetration
  2. Cabin heat cable firewall penetration
  3. Alternate air cable firewall penetration
Then I should be good to go... fingers crossed.  Then it all comes apart...


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