Turbo boost controllers
Turbo boost controllers
Has anyone tried these things on their cars? I understand the principle but know nothing about the (my) xantia turbo. Does it have an acuator pipe as it seems this is how they need to be plumbed in. I realise it's dangerous to overboost so a gauge is needed too.
Forgot to mention, there's the matter of ecu and non-ecu controlled valve. Mine's the non version. I've seen diagrams to show how the controller plumbs into a feed from the turbo to the valve/wastegate but I've not seen this "actuator" pipe on my car, just the one that comes up to the fuel pump and that's where the boost gauge plumbs into I believe.
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As Xantiaman says,
there is no ECU involvement in the boost control.
If you just want to do a few experiments, a bleed valve will most likely do the trick Mike, you know, one of those that cause a deliberate leak in the pipe causing the boost has to rise higher before the wastegate starts to open.
Again, if it is just for experiments, no need to spend a lot, just go to your local tropical fish store and get one of those little taps they put in fish tank air-lines.
I'd not like to play with boost without having a gauge in place though...
there is no ECU involvement in the boost control.
If you just want to do a few experiments, a bleed valve will most likely do the trick Mike, you know, one of those that cause a deliberate leak in the pipe causing the boost has to rise higher before the wastegate starts to open.
Again, if it is just for experiments, no need to spend a lot, just go to your local tropical fish store and get one of those little taps they put in fish tank air-lines.
I'd not like to play with boost without having a gauge in place though...
Jim
'98 Xantia 1.9TD in Red - Gabriel the Bus...
'96 Xantia Activa in Red - My favourite toy...
'07 Pug 207 in Blue - The Deathtrap...
'15 Giant Defy Bike in Blue - Daily rider...
'16 Giant TCR Bike in Black/Lime Green - Fine weather only...
'98 Xantia 1.9TD in Red - Gabriel the Bus...
'96 Xantia Activa in Red - My favourite toy...
'07 Pug 207 in Blue - The Deathtrap...
'15 Giant Defy Bike in Blue - Daily rider...
'16 Giant TCR Bike in Black/Lime Green - Fine weather only...
I know my car hasn't got ECU boost but I don't know if there's an actuator pipe I can plumb-in to. I've got a used boost gauge and some 5mm tubing but need a t-piece (can't find one anywhere) that fits the turbo-fuelpump now. What size is that?
I read that bleed-off valves aren't as effective as the shut-off valves (don't know why) so got one of those instead.
I read that bleed-off valves aren't as effective as the shut-off valves (don't know why) so got one of those instead.
Bleed valves are not as good because the allow air to leak all the time, whilst this fools the actuator into opening later = more boost, it can be inconsistant, also, the actuator still see's a boost signal so will start to open at whatever the spring pressure is, i.e if the actuator is rated at 10psi it will always start to crack open at the boost even if you adjust it using the arm and giving a 15psi boost setting.MikeT wrote:I know my car hasn't got ECU boost but I don't know if there's an actuator pipe I can plumb-in to. I've got a used boost gauge and some 5mm tubing but need a t-piece (can't find one anywhere) that fits the turbo-fuelpump now. What size is that?
I read that bleed-off valves aren't as effective as the shut-off valves (don't know why) so got one of those instead.
Using an MBC will mean the actuator only ever see's the boost pressure you want, give or take a small pressure drop, so if you set the MBC to open at 14psi, the actuator will not see that boost until the engine has produced enough volume/load, and then the MBC will open, the wastegate gets pushed open by the actuator, job done! It is more accurate in its setting too.
The end result is boost should build quicker because the wastegate never opens early, which should make the engine overall more responsive, and give you the extra boost you want to make more power (but only once you have added the fuel to match!)
Gareth
Xantia ActivaLX - Fuelled by SVO