Vacuum Routing help
I prefer to have my boost controller and waste gates not see any vacuum. I reference my boost at the turbo. Also I would try and and have the boost controller and waste gates on there own source not in a vacuum log. I'm not saying it won't work I just don't think it's the best way.
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From: Norn Iron
IMO never take the air source for a boost control solenoid from the same location as other items especially things like FPR or MAP sensor.
It may be ok if the line to the vac block is large, but IMO there is no good reason to do it that way.
And as Beans says, I can see no scenario ever where you would want the gates to see a vacuum signal.
IMO always take the boost source for boost control from the compressor cover or near, unless you have good reasons not to.
It may be ok if the line to the vac block is large, but IMO there is no good reason to do it that way.
And as Beans says, I can see no scenario ever where you would want the gates to see a vacuum signal.
IMO always take the boost source for boost control from the compressor cover or near, unless you have good reasons not to.
Thanks for the response guys. So as far as my drawing, I just need to tap my compressor housing, run the boost controller there and wastegates T'd from controller?
Just wanna do it right the first time while this is pretty much my last step.
Just wanna do it right the first time while this is pretty much my last step.
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Joined: Nov 2003
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From: Norn Iron
Yes that is one way you could do it.
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Stevie and Beans,
Can you post a drawing showing how you guys routed yours? I always get confused on what what should be ran from the vacuum block and what shouldnt be. I am in the same boat with the OP
Can you post a drawing showing how you guys routed yours? I always get confused on what what should be ran from the vacuum block and what shouldnt be. I am in the same boat with the OP
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Joined: Nov 2003
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From: Norn Iron
Basically it is best to have dedicated lines from the intake for each item.
Vacuum blocks are ok...if you run a decent size line from manifold to vac block...but I wouldnt like taking the brake booster off this same manifold
You dont want anything connected to critical signals like MAP, FPR that may interfere with those signals...and both wastegates ( boost control in general, especially if bleeding off signal to run higher than base spring pressure ) and brake booster all consume air to a degree, which is effectively an air leak.
Hence it's best to keep such items isolated from each other.
That wouldnt cause me any concerns
Basically it is best to have dedicated lines from the intake for each item.
Vacuum blocks are ok...if you run a decent size line from manifold to vac block...but I wouldnt like taking the brake booster off this same manifold
You dont want anything connected to critical signals like MAP, FPR that may interfere with those signals...and both wastegates ( boost control in general, especially if bleeding off signal to run higher than base spring pressure ) and brake booster all consume air to a degree, which is effectively an air leak.
Hence it's best to keep such items isolated from each other.
Basically it is best to have dedicated lines from the intake for each item.
Vacuum blocks are ok...if you run a decent size line from manifold to vac block...but I wouldnt like taking the brake booster off this same manifold
You dont want anything connected to critical signals like MAP, FPR that may interfere with those signals...and both wastegates ( boost control in general, especially if bleeding off signal to run higher than base spring pressure ) and brake booster all consume air to a degree, which is effectively an air leak.
Hence it's best to keep such items isolated from each other.