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How To: Manual Boost Controller


bond1318

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vulvas40t4 wrote on Sun, 10 July 2005 18:17

I noticed that without the original BCS and only with MBC the boost rises even faster than with bcs. ..)

I find that very hard to believe. Or at least very strange.

The MBC just keeps the wastegate shut all of the time untill the max boost level is reached, at which point it opens.

All of this regardless of the TCV. IMHO.

But then again, I haven't tried it and you have.

Janis

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Demonfire wrote on Sun, 10 July 2005 13:28

I get your plugging all the holes on the solenoid and the red and yellow plug into the mbc, but what do you do with the blue hose?

Remove the blue hose and plug the connection in the intake. Personally I used the blue hose in place of the yellow one because you really want all lines to and from the MBC to be as short as possible.

janis wrote on Sun, 10 July 2005 13:30

vulvas40t4 wrote on Sun, 10 July 2005 18:17

I noticed that without the original BCS and only with MBC the boost rises even faster than with bcs. ..)

I find that very hard to believe. Or at least very strange.

The MBC just keeps the wastegate shut all of the time untill the max boost level is reached, at which point it opens.

All of this regardless of the TCV. IMHO.

Well with the TCV installed it's able to divert pressure to the intake, remove it from the equation and boost control should be more responsive.

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Would i get even more accurate control if i changed the input of the MBC to the line between intake manifolt and turbo?

I mean the line which my boost gauge is now and the line where how to section tells to connect boost gauge. Smile

I mean that if i connect the input of the mbc on the same line with boost gauge would it be more accurate signal to wastegate and mbc? Smile Because now the input is taken from red line which comes from turbo and when temperatures change the signal is not soma accurate. Smile

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It's the one that's attached to the diverter valve isn't it? I'm not sure if teeing into all those lines is smart, you want to keep those hoses as short as possible. Output is much more important than input but even still I'm not sure 5' of cold line is better then 2' of hot line. Any ways give it a shot and post the results.

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