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Quick Question About My Mbc

PhilKenSebben
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PhilKenSebben Community Regular

PhilKenSebben

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I've recently bought the $22 magical Turbotech boost controller. I've read the tutorial (very helpful with the pics, cheers) but I want to know a few things.

Firstly, the top hose to the standard valve. Disconnect this and plug it with a bolt? This connects to the same return pipe as the BOV, so why is it there? Does the standard valve take two input signals? If so, why not splice two signals into the new one? If that's not correct, why is it there? Did Nissan really add it for NO REASON?

Secondly, what is the electrical connector on the standard valve? Is this simply for the CPU to know all? I have a Power FC if this negates the need for it? Just seems odd given it looks like only two wires.

Lastly, my Greddy FMIC kit specifically illustrated the need to connect to the 'T' piece in front of the control valve from the front of the inlet plenum, so I did. I've had no problems in a good 2 years of running this setup, however I read a thread saying to tap a nipple into the return pipe BEFORE the throttle body. I checked my old piping and sure enough, the nipple is in that very position. So assuming that Nissan know their product a little better than Greddy does, I bought a nipple and tapped it into the same place. What are the real ramifications of the previous setup? It seems to have made no difference, so I wonder why Greddy decided on this plenum positioning? Or was it just cheaper and easier than putting the fitting in on their piping?

Appreciate any help you guys can give me, but please, plain english. I'm not quite Luckieee level but some of the more techy lingo does go over my head.

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W0rp3D Grand Master

W0rp3D

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Cant remember which is the top or bottom but the one going back to the intake pipe after the afm gets blocked and the one coming off the cooler piping is the one you use, i believe the return to the intake pipe is some sort of return system, they put a lot of things on there that we throw after when modding but was there for some little reason when it come from factory.

PhilKenSebben Community Regular

PhilKenSebben

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Thanks but as I said, I did read all the tutorials I could find and they are very helpful, I'm just a technical info whore and I would like to know why Nissan would add pointless hoses. They MUST have a purpose. Nissan aren't exactly noobs when it comes to engine design, and sorry for all those that are offended by this, but 99% of us DO NOT know better than Nissan about their products, despite what I read.

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