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Hi there fellow wagon owners,

Trying to install the TT mbc on myself and was wondering if anyone could confirm which is the turbo side connection hose and the wastegate side connection hose. Thanks for any advice.

turbotechmbcbv7.th.jpg

EDIT: pixel8r, would love it if you could take a pic of where yours is connected to in the engine bay, cheers!

Edited by webng
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Don't worry, i think i got it. No 5 is the wastegate actuator and No.4 is the turbo line right? So i connect 4 and 5. Can someone confirm so i at least know for sure? Cheers!

EDIT: Do i have to put a stopper on line No.2? Or leave it connected to the solenoid?

EDIT2: Do the ends where connected to the mbc need the metal bits to hold them on? Or should zip ties suffice?

Edited by webng

#1 goes to a pressure sensor for the power steering (well its on the power steering pump) so leave it there.

#4 should go to the turbo compressor for pressure sense. Just disconnect it from the other end. that goes into the bottom of the MBC (opposite the adjustment screw).

Next remove #2 completely & fit it to the wastegate actuator (where #5 is )as #5 has a couple of restrictors in it, & the other connection on your MBC.

& thats it!

Remove the rest of the pipes as they are pritty much surplus to requirement for a turbotechnics style boost controller.

Does your MBC have a little hole in the side to vent the excess pressure out of the wastegate line after the valve has closed?

Good Luck

Regards,

Jeff

Edited by Techo

Hey thanks for that.

Yeah it has the hole, i think they went back to the holey ones sometime ago.

Cheers.

#1 goes to a pressure sensor for the power steering (well its on the power steering pump) so leave it there.

#4 should go to the turbo compressor for pressure sense. Just disconnect it from the other end. that goes into the bottom of the MBC (opposite the adjustment screw).

Next remove #2 completely & fit it to the wastegate actuator (where #5 is )as #5 has a couple of restrictors in it, & the other connection on your MBC.

& thats it!

Remove the rest of the pipes as they are pritty much surplus to requirement for a turbotechnics style boost controller.

Does your MBC have a little hole in the side to vent the excess pressure out of the wastegate line after the valve has closed?

Good Luck

Regards,

Jeff

Mine has the hole as well. I previously had a JRD sport one from ebay (they look very similar) but I've gotta say the turbotech one is so much better its unbelievable. I had the old one set at 12psi but with the turbotech at 10psi I thought it was running over 14psi because it felt so much quicker. I've now put it up to 12psi and it had a few issues with pinging - since it holds 12 psi right through the rev range now whereas the old one faded off to 9psi by 6000rpm.

So I've fiddled with the SAFC settings slightly and it seems to be ok now, not optimally tuned but good enough for daily driving. I dont boost it much. And when I do it still handles it fine, just that I know it could do better...and I'm tempted just to put it back to 10psi until I get more stuff done. ;)

Good luck with the extra boost :P I found that a 1/4 turn = about 2-3 psi on mine...

Car goes into Boostworx to get head gasket fixed (long story) next Mon, then i'll have a play with the boost. More then likely to set it at 10psi for the tune and leave it at that... with the stock turbo and all.

Mine has the hole as well. I previously had a JRD sport one from ebay (they look very similar) but I've gotta say the turbotech one is so much better its unbelievable. I had the old one set at 12psi but with the turbotech at 10psi I thought it was running over 14psi because it felt so much quicker. I've now put it up to 12psi and it had a few issues with pinging - since it holds 12 psi right through the rev range now whereas the old one faded off to 9psi by 6000rpm.

So I've fiddled with the SAFC settings slightly and it seems to be ok now, not optimally tuned but good enough for daily driving. I dont boost it much. And when I do it still handles it fine, just that I know it could do better...and I'm tempted just to put it back to 10psi until I get more stuff done. ;)

Good luck with the extra boost :P I found that a 1/4 turn = about 2-3 psi on mine...

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