Strange wastegate mod?

[SilasStingy]

So I've seen this valve before but never took the time to inspect it. Yesterday I had the intercooler off and decided to remove it, just to see if anything happens!
Result: No difference at all, at least nothing I've noticed so far.

What can this be? It seems to block the hose a bit (adjustable) and take unpressurized air from the engine space. Will this cause the turbo to overcharge or the opposite?

Shall I put it back or not? The original hose goes as it should directly to the actuator now.

 

[Lazy-Ferret]

The idea is it opens the waste gate a little later allowing the turbo to spool up for longer by allowing some vacuum loss to the gate actuator.

In my case as soon as you open it more than 2 clicks the engine keeps going into limp mode....

What my one does though, is to make the vacuum more digital, with a preasure valve inside it that stops the valve starting to open early at lower vacuums, which keeps the turbo at full boost for longer.

Sent from my GT-I8160 using Tapatalk

 

[SilasStingy]

The idea is it opens the waste gate a little later allowing the turbo to spool up for longer by allowing some vacuum loss to the gate actuator.

In my case as soon as you open it more than 2 clicks the engine keeps going into limp mode....

What my one does though, is to make the vacuum more digital, with a preasure valve inside it that stops the valve starting to open early at lower vacuums, which keeps the turbo at full boost for longer.

Sent from my GT-I8160 using Tapatalk

So by removing it I am just limiting the risk of something to fail?

 

[Lazy-Ferret]

So by removing it I am just limiting the risk of something to fail?

Basically, yes..

The car was designed to work with out it, and if it is not the sort of valve that has the pressure switch built in, it's probably not doing anything anyway.

Try marking the valve, and then closing it, while counting how many/few turns it takes to close it completely. I would be surprised if it is not already fully closed, but if it is not, then it will probably only be open about an 1/8th of a turn (You may need to undo a locking grub screw to turn it). Then take the car for a spin, and see if you can notice any difference.

The only time I notice mine is when towing the caravan, as between it and the MAF amp, my turbo spools up at about 1400 rpm, rather than the 2000 rpm when they are turned off and removed, which makes pulling away at junctions a lot nicer.

 

[Sweety]

I'd remove that bleed valve one it's not needed & has be after market fitted & secondly I think you will be infact loosing pressure as there is an unconnected pipe on it which I would think is for a gauge to be plumbed in so the pressure instead of going to the gauge to give a reading is venting to air. Standard set up is a pipe from the turbo straight to the actuator & once this has been done you might find your T2 is faster

 

[harlowmaverick]

Not only faster but more fuel efficient as well

 

[SilasStingy]

Just came back after a long test drive.
Before I removed this pipe I was happy with my Terrano, not too happy but still... Happy.
I had gearbox problems, it slipped when accelerating hard and made weird noises every now and then and in general caused a bit of a lumpy ride, but it was even though a pleasant car!

During today's test drive I realised something most have happened to the poor thing, all of those problems gone! :clap
It changes gears soo smoothly now, it's like driving a different car.

I have removed its infected appendix!
I'm no longer just happy with my Terrano, I'm starting to love it! :bow

 

[harlowmaverick]

Glad that you love it now!