MBC install [Merged 10-7]

[b00sted99-X]

HERE, DAMMIT!

http://www.dsmtuners.com/forums/showthread.php?t=237982


ok n00b question here.. i got my MBC all hooked up fine (dejon tool.. sweet!) i'm just wondering what to do with the stock boost solenoid hoses.. i took the top one completely off (this is the one that was going to my intake pipe.. then capped that nipple on the pipe) .. the one on the bottom, that tees off and goes to both the wastegate and the turbo housing, is still there. i just bent it backwards and stuck it in the bracket that the top hose was at.. its still connected to the solenoid though. is this alright? can i leave it on there like that will it screw anything up?

 

[zippyshoe]

Perfect. The MBC install went smooth, and the Boost gauge went smooth for the most part...That cheap air/fuel I am probably just going to put it in the closet or to some Honda kid and buy a different gauge.

Boostin 15psi at full boost but once i pass 5k i drop to 10. Although, the most important thing is that my stutter is gone.

Thanks for all this help. It made the install cake...even with my Honda guys reading the instructions I printed out from you.

Next stop will be a ported exhaust manifold.

Peace!

Chad.

Incidentally, your boost dropping down to 10psi at past 5k is normal - this is a limitation of the T-25 - its unable to provide high enough airflow rate to maintain 15psi to redline.

 

[TEAMONEINC]

Strm Trpr,

Perrin sent me install instruction for the MBC that went basically like this:

Unplug all hoses leading from your compressor side of the turbo and your waste gate actuator.

Take the provided hose and connect it to the compressor side of the turbo.
-I only used about six or seven inches.
Then take the MBC and plug it in to the hose.
-I can't remember which way it went, but they gave me picture directions so there was no way I could screw it up.
Then take the remaining hose and connect it to the other side of the MBC.
After you do that, connect it to the waste gate actuator.

I used minimal of hose as possible to ensure precise tuning.

The directions never mentioned to me the option of connecting it to another source (BOV line) etc.

Hope this helps.

Chad.

 

[Strm Trpr]

TEAMONEINC,
Right on man.
I just bought a Fuel Pump Re-wire kit off of eBay, and a Hallman Pro RX MBC all for $119 shipped...
I so can't wait.

 

[Dream On]

I would go into the compressor housing line instead of the BOV line, just like what the instructions say. Its better from what I hear, as boost spikes can occur sometimes when its T's into the BOV line. Where is oldman to back me up on this? haha.

 

[oldman]

I'll back you but I won't type the whole thing out again, copy and paste from another thread.

Originally Posted by oldamn
Taking the pressure source from the j-pipe fitting has many benefits.

1. The main reason why alot of mbc instructions and some tech articles suggests to tap from the BOV line is because it's connected to the intake manifold, the argument is that this is more accurate because it's the same pressure the engine sees. In reality this is a non issue because the boost gauge is tap to the intake manifold no matter where you tap your mbc so there is no advantage in tapping the bov/manifold pressure as previously thought.

2. The proper functioning (opening and closing) of the bov depends greatly on the accuracy of the pressure in the vacuum hose you're thinking of tapping on or off boost so it's best to leave it connected directly to the manifold without any interference.

3. Tapping off the compressor/j-pipe offers the shortest vacuum hose route which greatly reduces the chance of boost spike.

4. In the case of boost leaks, tapping off the compressor/j-pipe will help prevent over boosting the turbo.

5. Hooking up a bleeder type mbc like the TurboXS standard mbc to the bov line will result in a vacuum leak as well as affect the working of the BOV.

 

[Strm Trpr]

Originally Posted by oldamn
Taking the pressure source from the j-pipe fitting has many benefits.

1. The main reason why alot of mbc instructions and some tech articles suggests to tap from the BOV line is because it's connected to the intake manifold, the argument is that this is more accurate because it's the same pressure the engine sees. In reality this is a non issue because the boost gauge is tap to the intake manifold no matter where you tap your mbc so there is no advantage in tapping the bov/manifold pressure as previously thought.

That statement in Red says it all.
Thanks Oldman....

 

[oldman]

You're welcome.

 

[95GST2841]

anybody have a diagram or the best way of doing this?


I've never done any kind of work what so-ever on a turbo motor..


how do I install a mbc?


how would I wire up a boost gauge too?


any help would be greatly appreciated!

 

[femmeDSM]

Here you go:
MBC: http://dsmtuners.com/forums/showthread.php?t=105573
Boost Gauge: http://dsmtuners.com/forums/showthread.php?t=205099


Try the Tech Articles for stuff like this in the future -- it saves you the trouble of typing up your question


Edit: Also, read this site, bookmark it, and memorize it: http://www.vfaq.com. It is your friend.

 

[Strm Trpr]

Do not tee your BOV line.
Your compressor housing has a boost source right on it.
Run a line from this boost source to the in of the MBC, then run a line from your out of the MBC to the wastegate acutator.
Do you have a mechanical boost gauge or a electronic boost gauge?

 

[95GST2841]

its mechanical

 

[95GST2841]

I still have no idea of how to do this. Neither of those explained much.


I dont even know where the wastegate is or what it does. I have no idea what to do about the boost gauge. Anybody have a more vivd pictures/details of how to do this?

 

[2bclutch]

Do not tee your BOV line.
Your compressor housing has a boost source right on it.
Run a line from this boost source to the in of the MBC, then run a line from your out of the MBC to the wastegate acutator.
Do you have a mechanical boost gauge or a electronic boost gauge?

I have an EVO Big 16G III and a TurboXS H34 BOV should I not be teeing to my TurboXS Standard MBC off the BOV?

 

[femmeDSM]

I still have no idea of how to do this. Neither of those explained much.


I dont even know where the wastegate is or what it does. I have no idea what to do about the boost gauge. Anybody have a more vivd pictures/details of how to do this?

Um...Okay.....

A search will yield hundreds upon hundreds of results that will probably better answer your question. However, here are a couple that might help. Feel free to use the Search function if you still need more information:

http://dsmtuners.com/forums/showthread.php?t=200878
http://www.dsmtuners.com/forums/showthread.php?t=159094
http://vfaq.com/mods/wayback/BradBau...ges/boost.html
http://www.roadraceengineering.com/i...structions.htm
http://www.dsmtuners.com/forums/showthread.php?t=150614
http://dsmtuners.com/forums/showthread.php?t=105216

 

[TrboANTsi]

i hooked up mine to the turbo housing..and the wastgate actuator. attached the MBC to my fan housing..it keeps the lines nice and short and easy to access.

 

[Strm Trpr]

I still have no idea of how to do this. Neither of those explained much.


I dont even know where the wastegate is or what it does. I have no idea what to do about the boost gauge. Anybody have a more vivd pictures/details of how to do this?

Back away from the vehicle.

femmeDSM hooked you up with great information that had a ton of description and instruction.
The mbc install link is probably the best graphic I've ever seen.

Sitdown at your computer and order a Haynes Manual if you don't already have one.
The VFAQ is priceless, pretty much everything you would ever need to know is right there.
Try searching more and reading more, you sound like you need to learn a lot.
My advice is to learn as much as you can and do not have someone install any of the stuff you mentioned.
I want you to learn how to do it yourself.
You need to build your confidence to work on your car, it's alright, I've been there, we've all been there.

I took me almost 10,000 miles past 60,000 to finally change my first T-belt.

I'm not trying to sound like a dick.
We're all here trying to help you.

 

[a_scobel]

http://www.belitski.com/vfaqhallman.html

This is what I used when installing my JoeP MBC. I think it's the easiest of the MBC install instructions to follow.

If this picture doesn't help you figure it out, then I don't think anything will, dude.

Yes, I know people are now saying to not hook it up to your BOV line, but I've tried both ways & saw no difference.

 

[erebusknight]

the best source is as close to the compressor wheel as possible. This will give the quickest response. Always be sure to use tight clamps and hoses because many people will leak through the hose which isnt horrible but not good. Some people I have read on other forums say to not T off of the FPR because you dont want a leak there (lower vacuum means higher pressure when not needed in fuel rail causing injectors to piss a little more then needed in turn)

 

[95GST2841]

EDIT: got it installed and working properly, thanks!

 

[HearMeSpoolin]

i see alot of people having problems with there boost controller like i did were it still shot up to over 20psi... well this is why.... i found this on the site and the two are in the wrong place, so the line with the "T" in it should go to the side and the bottom one to the act.... hope this helps someone, cause i was gettin pissed off cause mine didn't work

 

[WFO731]

So are you saying this is how it should be or the T should be turned?

 

[HearMeSpoolin]

http://www.turboxs.com/faq/eclipse1.htm

the "T" is fine its were they go to the boost controller thats wrong

 

[HearMeSpoolin]

ive read tons of differen't ways, and the one from the site i listed worked for me and the other ways didn't

 

[FORMONTOYA]

I would have to assume this is a "brand" exclusive MBC as most MBCs I have dealt with have the source enter the port opposite the adjuster knob, and the control go to the WG actuator as shown in post #1. Although I, and many others, feel that the compressor/j-pipe/lower IC pipe nipple is the better place to get a "source" from (not the BOV line) for the MBC.

What brand MBC do you have that its inlet (source) feed from the side?


Jim

 

[HearMeSpoolin]

its the turbo xs one... mine goes in the side and out the bottom, so the one showed goes in the bottom and out the side?