[truwarrior22]

I'm gonna hook up my mbc and I was gonna hook it up to the turbo like the stocker boost controller but everyone seems to say to hook it up to the bov return line for the boost source. I'm still useing the t25 if that makes a diffence. Also where can I get those little nipple things to cover up the vac port and boost source from the turbo if i hook it up to the bov return line. I never had to use them before. The boost controller came with no vac lines or nipples.

Thanks.

 

[noreaga0221]

you can hook it any basically anywhere. as long as you have a boost source coming into one end and the other end of the mbc going into the wastegate actuator then you're fine. Having the mbc closer to the turbo and wastegate actuator will help keep down the level of spikes and make the boost more steady.
fwiw i have mine hooked up from the compressor outlet elbow right to the WA.

 

[James92TSi]

I'm one of the few that prefers to keep the BOV on a dedicated boost/vac line, rather than T-ing into it for the boost controller.

To each his own though. I will say that it makes things a lot easier to troubleshoot when everything's on its own line.

 

[greenstreak]

You can get those caps at any hardware store. Just ask for vacuum caps at the counter. You can usually get them on a tree that has a bunch of different sizes.

 

[khendriksma1]

Someone told me that using the nipple on the compressor housing will also help with the compressor "flutter" that is common when letting off the throttle slowing from a boosted accellaration. Also, I was told that Tee-ing into the BOV line gives you more accurate boost because the pressure is coming from the intake manifold rather than "source" of the boost.

Are these statements correct?

I currently have mine Tee'ed into the BOV line but I was thinking of changing it. I have my boost pressure set to 16psi but it will spike to 19-20psi and then settle at 16psi.

 

[ChicagoGSX]

I'd say those are both wrong. If you hooked the BOV into the compressor nipple you may notice a little compressor surge because the BOV would open later because of the longer vacuum hose. The MBC will most likely give you more accurate boost at the compressor housing because the lines will be very short. I use the nipple on my LICP and am able to control boost from 10-20+ and have no compressor surge with the 1g BOV hooked up to the intake manifold.

 

[khendriksma1]

I'd say those are both wrong. If you hooked the BOV into the compressor nipple you may notice a little compressor surge because the BOV would open later because of the longer vacuum hose. The MBC will most likely give you more accurate boost at the compressor housing because the lines will be very short. I use the nipple on my LICP and am able to control boost from 10-20+ and have no compressor surge with the 1g BOV hooked up to the intake manifold.

I wasn't implying that the BOV would be hooked to the compressor housing. I was talking about the MBC using the nipple on the compressor housing as the boost source rather than teeing into the BOV line. Will this solve the boost spikes as well as the "flutter" that I initially get on slow decelleration after boosting?

Kevin

 

[khendriksma1]

Greenstreak

Is the hump on the hood of your car wider than the stock one? I am guessing that is a CF hood but it just seems to have a wider than stock hump. If so, I have never seen one like that.

Sorry to get off subject.

Kevin

 

[PropXprt]

I wasn't implying that the BOV would be hooked to the compressor housing. I was talking about the MBC using the nipple on the compressor housing as the boost source rather than teeing into the BOV line. Will this solve the boost spikes as well as the "flutter" that I initially get on slow decelleration after boosting?

Kevin

So what you are saying is hook the MBC up directly to the wastegate and on the elbow right off the turbo?

 

[khendriksma1]

I don't have mine hooked up that way right now but I have heard that if you use the nipple on the compressor housing as your boost source for the MBC and then hook up the other end of the MBC to the wastgate as normal, you will not get boost spikes near as easily.

Kevin

 

[anothernt]

Greenstreak

Is the hump on the hood of your car wider than the stock one? I am guessing that is a CF hood but it just seems to have a wider than stock hump. If so, I have never seen one like that.

Sorry to get off subject.

Kevin

I believe its a VIS Invader CF hood. Very sexy I might add.

 

[lithium]

FYI, before I had an upgraded intercooler, I used the nipple on the compressor housing as my boost source for my MBC, but as I started upgrading my piping, and then the intercooler, I noticed I got A LOT of spike, and inconsistent boost (+/- 1-2 psi), and as outside air temp changed, the boost would change dramatically. Now tee-d into my BOV line, my boost is much more consistent, only 1-2 psi spike at most, and if the weather changes significantly, my boost doesn't (it does go up or down depending on weather, but nowhere near as much as it did coming off the compressor outlet).

 

[PropXprt]

thanks lithium...

 

[talon167]

I put mine on the turbo housing, just becasue it was easier at the time. If/When I get my 16g, itll go into the BOV tubing. It works well for me where it is.

 

[truwarrior22]

Is there a special kinda vav tubing to run the mbc to the wastegate? I didn't get any vac tubing. Also my mbc has a little hole in it do release pressure. That's not gonna affect my BOV any will it?