Manual Boost Controllers

[mr299ron]

Is anyone running an MBC? What model and from where?

I will buy an EBC in the future, however I would just like to raise the boost from 0.5 bar (from warm!) to a measly 0.6 or 0.7.

99ron

[craig]

Gtschris. I had one from him years ago. No problem.

[tsango]

Gtschris. I had one from him years ago. No problem.

Same

[Nic]

For the best results make sure it's a ball and spring type MBC.

[2mad]

Gtschris. I had one from him years ago. No problem.

Same

Yep me too

[2mad]

For the best results make sure it's a ball and spring type MBC.

Yep

[mr299ron]

I emailed Chris, but he doesn't have any MBC's available.

Any form of ball and spring type controller with a locking nut, that also isn't from poundland, seems like it could do the trick.

[2mad]

http://www.ebay.co.uk/itm/220834255382? ... EBIDX%3AIT

[danjama]

Just fitted one of the above, seem as well made as gtschris one was, will do the trick

[2mad]

Just fitted one of the above, seem as well made as gtschris one was, will do the trick

[mr299ron]

http://www.ebay.co.uk/itm/220834255382? ... EBIDX%3AIT

Haha I've actually been watching this for a little while!

[mr299ron]

But the thing is the car is noticeably different between cold and warm. The gauge reads 5 psi when cold and 8 psi when warm. The car feels noticeably different. I honestly think it's just a bad gauge now, as the difference in figures is the same from cold to warm.

I.e on my gauge it's 5 to 8 psi

the car should be showing 7 to 10 psi

Why would the car show 5psi, then up it 8 degrees when warm? Timing out?

[mr299ron]

Come to think of it, I think there's an issue with the vsv and/or spring that releases the boost pressure.

I reckon it's a little worn and won't open up as it should.

I'm going to install an MBC and disable vsv and see what happens.

[mr299ron]

http://www.ebay.co.uk/itm/220834255382? ... EBIDX%3AIT

Do you know what size hose ID I'll need for this? 3mm? 5mm?

[masterbateson]

Ive just got and fitted that mumby job off ebay too I used 5mm internal diameter hose on mine.

[2mad]

http://www.ebay.co.uk/itm/220834255382? ... EBIDX%3AIT

Do you know what size hose ID I'll need for this? 3mm? 5mm?

5mm .. i used mate

[mr299ron]

Awesome thanks dude! Just ordered some

[mr299ron]

http://www.ebay.co.uk/itm/220834255382? ... EBIDX%3AIT

Do you know what size hose ID I'll need for this? 3mm? 5mm?

5mm .. i used mate

Do you reckon either of the following will be good?

http://www.ebay.co.uk/itm/380483835616? ... EBIDX%3AIT

http://www.ebay.co.uk/itm/190884940904? ... EBIDX%3AIT

Let me know what you think. Both with a 5mm internal diameter.

99ron

[2mad]

Yes this mate , pick a colour and your good to go .. http://www.ebay.co.uk/itm/190884940904? ... EBIDX%3AIT

This is what i used on my gt4 plus a 5mm silicone cap for the actuator .

[mr299ron]

Yes this mate , pick a colour and your good to go .. http://www.ebay.co.uk/itm/190884940904? ... EBIDX%3AIT

This is what i used on my gt4 plus a 5mm silicone cap for the actuator .

b0ll0x, shouldn't have bought the other one. Nevermind, I'll just replace a couple of lines for sh1te and giggles.

So, with hitting boost when cold at 5psi and about 8 when warm, do you reckon the wastegate spring is just weak and thus why I'm seeing the difference of 3 psi between cold and warm, but not a "from the factory" boost pressure reading?

Fitting an MBC seemed to solve this problem for you I guess. Did you have the exact same issue as me?