Getting an MBC???

[giorgos_B5c]

First of all,yes i searched.I read all the threads about mbcs.I know it has an on off feeling,that doesn't work too well on our cars and better on bt s etc etc etc.

The reason i want to try one is this:3 days ago i tested a N75J on my car.The car run great except for the additional +0.2 bar.Even in low boost my bov(it's temp situation.I'm waiting for my 006 and didn't want to have the car down and tossed that thing in there)sounded like i'm boosting 2 bars.The car felt powerful.The only problem,was that the j valve,doesn't hold boost.I run lower boost on higher rpm than my c valve.So i got rid of it.Now my car feels sleepy and heavy.I don't want to put the j valve back.I think i want to try an mbc.My car is custome tuned and i'm running 1.2 bars.Is it safe if i raise it to 1.4?If not ok,i don't care.I think the reason the j valve made the car feel stronger was due to the way it was opening and closing the wg.I think i'm gonna get the same thing from the mbc?Am i right or wrong here?

[SykoraA4]

im pretty sure the faster your build boost the faster it tapers off in the higher end. i think the mbc will just do the same thing as the n75j. maybe if you use both.

[Yaktizzle417]

The N75j will likely throw you into limp mode without a diode. So if you're going to do that, you're going to lose your half throttle-ness, so you may as well just do a diode+MBC if you want more boost without a real tune. That way you can at least adjust it. If you want to keep your MAP sensor in one piece, pair the N75 with a good boost controller, and set the boost controller up to prevent overboosting. Check out boostvalve's website, they'll set you up.

Sykora, no, the faster you build doesn't matter on tapering off. The more you build, the more you have up top. I can hold roughly 18, and it tapers to roughly 11-13ish at redline.

[giorgos_B5c]

I hava a proper tune.I am chipped.The j valve never throwed me in to limp mode.Also no map sensor here.I'm dbc.I just liked the way the j valve spooled my car

[giorgos_B5c]

Update

Installed the boost controller today.I completely took off the n75 valve.I was boosting before the mbc 1.2-1.3 bars.And now i'm boosting exactly the same?Why can't i raise boost?With the J valve i was able to boost 1.5!

[giorgos_B5c]

BUMP

i need help on this one!!I need to up my boost

[AudiRacerS4]

Sykora, no, the faster you build doesn't matter on tapering off. The more you build, the more you have up top. I can hold roughly 18, and it tapers to roughly 11-13ish at redline.

yes it does the faster you build boost and the higher you spike your boost will taper off much faster

[AudiRacerS4]

BUMP

i need help on this one!!I need to up my boost

what MBC did you buy?

[giorgos_B5c]

I bought a custome made.A reputable constructor makes them.He also makes intercoolers,dv s etc

It has 3 inlets,just like the n75.You plug it in the tip and take the n75 completely off.I tried it with the electric plug connect and disconnected on the n75.....Still nothing.Is there a chance i connected the pipes wrong?I think if i had done that,i wouldn't have seen any boost

[AudiRacerS4]

I bought a custome made.A reputable constructor makes them.He also makes intercoolers,dv s etc

It has 3 inlets,just like the n75.You plug it in the tip and take the n75 completely off.I tried it with the electric plug connect and disconnected on the n75.....Still nothing.Is there a chance i connected the pipes wrong?I think if i had done that,i wouldn't have seen any boost

the 3 prong MCB's all suck you need a 2 prong one preferably bleed type not ball and spring

[maxspeed]

you want this kind:

[Bfiver]

i have this exact mbc ^^^ how exactely do u hook this thing up??? sorry newby here...

[giorgos_B5c]

I had that one before.That thing is a piece of junk.One run at 1.5 bars and completely fall apart.Spring came out,ball came out even the screw!I returned and got refunded

[erikas3]

Don't mean to thread jack, but what is a good priced MBC someone can recommend?

[pisces_0]

Don't mean to thread jack, but what is a good priced MBC someone can recommend?

http://www.hallmanboostcontroller.com/

Nothing else comes close, for the money.

[giorgos_B5c]

Any idea why i can't boost higher?

[AudiRacerS4]

i run a turbo xs dual stage boost controller and it works amazing, they can be had for around $100-$150

[maxspeed]

Any idea why i can't boost higher?

sounds like you have it setup wrong

[Tiluleshpingen]

you won't boost any more then 22-25psi , u dont expect to boost 30psi on that little thing do you? specially of ur tune is not ment for that much psi

[milehighpilot]

I thought our engines could only handle 21 psi before really needing upgrades?.... im not too sure about 25 plus there is no way a little k03 could handle 25 for more than a spike with out tapering off

[giorgos_B5c]

Right now i'm running around 18 psi....I found another way...i'm gonna try it and see

[giorgos_B5c]

update #2

I put the mbc after the n75.I spliced the mbc between the wastegate and wastegate inlet on the n75.Still nothing>it doesn't boost above 1.1 and now it doesn't even lower boost!

[Tiluleshpingen]

update #2

I put the mbc after the n75.I spliced the mbc between the wastegate and wastegate inlet on the n75.Still nothing>it doesn't boost above 1.1 and now it doesn't even lower boost!

delete the n75 just run straight MBC!!!

[giorgos_B5c]

I was running the mbc by itself before but had the same results.I could lower boost,but never raise it

[Tiluleshpingen]

I was running the mbc by itself before but had the same results.I could lower boost,but never raise it

gotta turn it all the way up, cuase thats how they work speacially these little k03 i managed to get it at 5 psi, 12, 17 and 22psi u cant be very specific with it.

[giorgos_B5c]

No mater how much i turn it up,it doesn't boost above 1.1.I don't know...This thing drives me crazy!Is there any possibility that my program doesn't accept the mbc,but accepts the J valve?Because with it i was boostin 1.5 psi