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How To: Manual Boost Controller


bond1318

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I installed it tonight the way described....took less than 10 minutes. I love it so far. Does hold boost better than stock and is more constant....not alot of spikes and easier to control.

Im boosting at 11-12 constant now, with spikes to 14-15 rarely. I was doigd 5-6 psi constant stock with 9-10 spikes. I feel the power now with the MBC in.

Check out the engine modifications section of this forum to see my full review and questions...

Thanks guys.

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I just read a thread about bypassing the stock silenoid....

It says to use caps to cap off the fresh air by the intake and to leave the fresh air on the solenoid open. Should I do it this way??? I just did it like brian and left the fresh air hose. Would leaving one size open and capping the hole by the intake tube be better or is it the same?

Also, if I cap off the intake tube fresh air, and leave the fresh air on the solenoid open do i think to put in a breather filter? Would it be better?

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  • 1 month later...

Hi Guys,

need your help here....

i just install the MBC follow the method and step show above..

but i have the problem here, my boost doesnot increase but just decrease..

mt standard boost was 0.5 bar..after installing MBC and fully adjust the MBC, it only give me 0.3bar..what happen?

i connect back all compressor and wastegate connection to original solenoid..the boost goes up to 0.5bar as normal..

anyone afcing this problem? need ur advice please...

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jdsr917 wrote on Tue, 10 March 2009 22:20

Hey can this be applied to the 05 up s40?

Are there any write ups ???

Most likely not. They use Bosch ME9 Ecu's I believe, which will detect overboost in lower gears at lower psi than the 1.9T Siemens ECU, and throw the engine into limp mode. The only way to raise boost in a newer S40 T5 would be an aftermarket ECU tune. After that, you could possibly increase spool time with an MBC if you use a two stage and limit the boost in 1st and 2nd too 10-12psi, then use a second stage for 3rd gear and beyond for 15-17psi, but a tune should cover that.

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  • 1 month later...

Ok, so i've purchased myself an In-Cabin Boost Controller, the one with the tee, like GerBeGurGya's.

So, before installation, let me see if i got this right and PLEASE correct me if i am wrong:

- Remove from the stock Boost Control Sensor the red an yellow lines.

- Connect the red line to the input of the tee

- Connect the yellow line to the output of the tee (to wastegate)

- Connect the 'yellow' port of the stock BCS to the 'red' port of the stock BCS using another hose.

- Connect the in-cabin MBC to the center of the tee.

- Adjust from cabin and have fun!

Is this correct?

Also, i have a Ph.2(2002) European T4, does anyone know what kind of turbo i have (12T, 14T)? How high can i go up with the boost?

I have an ECU Remap and 3"downpipe+2.5"catback and i just want to go a little higher with the boost.

I am also using an Alcohol Injection System, so i can decrease the temperature in the intake system.

Thanks,

Vlad

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