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Losing Boost


thewoods

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  • Member
  • Member For: 13y 3m 19d
  • Gender: Male
  • Location: Cessnock, NSW

What's the actuator? I cleaned my boost solenoid yesterday and defiantly noticed that its not cut out anywhere near as much but is still not holding pressure fully.

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  • Member For: 14y 1m 6d
  • Gender: Male
  • Location: Auckland, New Zealand

If it's the actuator wouldn't it stay a lot higher than 2-3psi?

If you're running a standard actuator you could just remove the hose from the boost solenoid so it opens on spring pressure without diaphragm/boost assist. Should run ~12psi I think.

Be careful though. If there's fuelling problems you don't want to lean out and detonate.

Probably better to get it checked out properly if the simple plugs etc don't fix it. You don't want to lose your engine...

When you say it has a flash tune is that generic? If so you may be best going for a proper tune to see if your pump and injectors are maxing out anyway.

Edited by riptide
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  • Member For: 16y 3m 2d
  • Gender: Male
  • Location: SE Melbourne

If you're running a standard actuator you could just remove the hose from the boost solenoid so it opens on spring pressure without diaphragm/boost assist. Should run ~12psi I think.

OP whatever you do, don't do this.

riptide: bad advice mate.

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  • Member
  • Member For: 13y 3m 19d
  • Gender: Male
  • Location: Cessnock, NSW

Ok thanks. It was been tuned with one of the handheld tuners. Cal3 or something. It's going in for a service next week so I'll see what they think and get a check up. About the hose running from the solenoid, if remove that it will make more boost? Obviously not good for the engine though.

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  • Member
  • Member For: 14y 1m 6d
  • Gender: Male
  • Location: Auckland, New Zealand

Yeah, the boost pressure through the solenoid assists the opening of the waste-gate. If you disconnect it it will take more exhaust pressure to open the waste-gate. It won't open cleanly though and the boost won't be quite as steady. I prefer an electronic boost controller. Gets the pressure up quick and holds it nice and stable.

A good tuner can check what's wrong with it fairly easy. Maybe easier than the guy doing the service because it will be hooked up to monitoring gear for the fuel pressure and it may be logged also along with afr's etc.

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  • Ford Nub
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  • Member For: 13y 10m 16d
  • Gender: Male
  • Location: Gold Coast

When I bought mine the hose to the boost soleniod was plumbed straight to the front housing, maxed out at 5-6psi. plugged all up an made 15 dropping to 10

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  • Ford Nub
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  • Member For: 13y 10m 16d
  • Gender: Male
  • Location: Gold Coast

I dont think I explained properly

I plugged it back into where it was supposed to be, back into the solenoid.

For some reason it had been bypassed. The actuator hose was connected straight to the front housing and the soleniod hose was connected back to itself.

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