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Read Mark's post. It depends on what you are trying to accomplish.

Posted by: DAP on 2004-03-19 11:01:46
Account #: 6924 Advertiser

In Reply to: so i just hook it up the same way i would run any MBC? posted by 2000s4biturbo on 2004-03-19 10:57:35

If you want to eliminate boost spikes and control initial boost/spoolup then you need to install it in parallel as shown in the diagram below.

If you install the MBC by itself and remove the N75, then you will be running a constant boost level. Keep in mind that the stock fueling system can't handle over 1 bar of boost at the high rpms w/o leaning out.

-Dave Pramanik

Thread:

Since there seem to be a lot of questions on how N75 vs MBC vs Both affect boost, I drew this up... - Mark P 2004-03-19 08:48:12 (15026 views)

Another option is just to run a EBC (like I'm doing now) - Joshua (wishbone) 2004-03-19 14:17:14 (1497 views)

What chip software are you running? - Verrückt 2004-03-19 14:27:15 (719 views)

I'm running GAIC X, so I don't see any deviation codes, but I don't run much higher than 18-19 PSI - Joshua (wishbone) 2004-03-19 14:28:28 (849 views)

would a mbc in parallel control spikes up high as well as down low? - shl rider 2004-03-19 11:41:31 (867 views)

Whenever the boost reaches the set value of the MBC, the MBC bleeds off the extra - Mark P 2004-03-19 11:52:48 (864 views)

Everywhere ... When used in parallel, it would control the upper boost threshold - jbear@work 2004-03-19 11:45:05 (757 views)

That is correct. That is how mine is set. - DAP 2004-03-19 11:46:27 (608 views)

damn... looks like I need a MBC - Why would one not do it ? - sfored 2004-03-19 10:51:30 (768 views)

GFB manual boost controllers in stock. - Jason @ ND 2004-03-19 11:25:40 (1561 views)

How much? Can't find it on your website. - VonK :: Indukted 2004-03-19 14:52:34 (616 views)

Cooling fins will add at least 5% powa. ;) - VonK :: Indukted 2004-03-19 13:32:18 (749 views)

Damn that's ugly... - reefer_bob 2004-03-19 12:23:33 (604 views)

And you think those brass hardware store MBCs out there aren't?! - Jason @ ND 2004-03-19 14:24:19 (659 views)

"Why would one not do it?" - W0LSC0D(Anti-Rice) 2004-03-19 10:57:35 (789 views)

i was always under the impression that you coulndt run an mbc on - 2000s4biturbo 2004-03-19 10:50:59 (1055 views)

Answers inside... - Verrückt 2004-03-19 11:21:53 (1117 views)

Nope. - DAP 2004-03-19 10:56:22 (652 views)

so i just hook it up the same way i would run any MBC? - 2000s4biturbo 2004-03-19 10:57:35 (738 views)

Read Mark's post. It depends on what you are trying to accomplish. - DAP 2004-03-19 11:01:46 (2562 views)

pic doesnt work. ok so idealy i would want - 2000s4biturbo 2004-03-19 11:06:27 (773 views)

If you don't have boost spikes and you aren't doing any fuel upgrades, the chip by itself is fine. - DAP 2004-03-19 11:08:02 (588 views)

alright sounds good. thanks for clearing some stuff up for me !!!!!! - 2000s4biturbo 2004-03-19 11:10:05 (506 views)

red - W0LSC0D(Anti-Rice) 2004-03-19 11:03:28 (620 views)

Right click, show picture. - DAP 2004-03-19 11:05:30 (602 views)

<Stepping aside for DAP to deflower the n00b> - W0LSC0D(Anti-Rice) 2004-03-19 10:58:13 (588 views)

deflower! but im not a noob 8-P , i just never looked into - 2000s4biturbo 2004-03-19 11:03:06 (629 views)

Sound like a n00b to me. - mpwolf 2004-03-19 11:41:34 (511 views)

I was just kidding, man. I meant no disrespect. - W0LSC0D(Anti-Rice) 2004-03-19 11:05:25 (488 views)

lol i didnt get offended. - 2000s4biturbo 2004-03-19 11:09:30 (518 views)

No, no, no! Look at the diagram. - DAP 2004-03-19 11:04:18 (580 views)

i posted before you got the diagram up. thanks a million :-) - 2000s4biturbo 2004-03-19 11:09:02 (491 views)

<bowing graciously> :P - DAP 2004-03-19 11:02:42 (461 views)

BTW, I think boost builds quicker no matter which way you have the MBC set up. However... - W0LSC0D(Anti-Rice) 2004-03-19 09:49:12 (897 views)

I agree. - DAP 2004-03-19 10:37:51 (527 views)

I feel like I am talking to myself when I respond to you :p - W0LSC0D(Anti-Rice) 2004-03-19 10:39:35 (475 views)

Great minds... - DAP 2004-03-19 10:46:16 (473 views)

I'm far far far far far from a great a mind, but thanks! - W0LSC0D(Anti-Rice) 2004-03-19 10:47:30 (466 views)

Awesome representation Mark! - Verrückt 2004-03-19 09:47:50 (464 views)

So which is better? In you opinion, of course ;) - swinmachine 2004-03-19 09:42:28 (532 views)

Totally depends on your setup and what you want to accomplish. - W0LSC0D(Anti-Rice) 2004-03-19 09:44:49 (766 views)

Is it correc to say that MBC alone will yield the most power because... - Swank4 2004-03-19 10:18:16 (776 views)

Peak power may not be much higher, but it will yeild more area under the curve... - Verrückt 2004-03-19 11:16:19 (657 views)

Yeah, that is why I say it depends on your objective. I want power AND reliability. Therefore.... - W0LSC0D(Anti-Rice) 2004-03-19 10:32:49 (696 views)

What's better for the engine i guess? I've got ko4's on ko3 software, so i'm - swinmachine 2004-03-19 10:17:36 (659 views)

Unless you've got fueling upgrades, you probably want the MBC in parallel with the N75. - DAP 2004-03-19 10:39:57 (698 views)

Re: Unless you've got fueling upgrades, you probably want the MBC in parallel with the N75. - iturk 2004-08-15 08:18:59 (632 views)

Okay, from now on, you are in charge of answering questions! We end up saying the same thing :) - W0LSC0D(Anti-Rice) 2004-03-19 10:40:49 (516 views)

I'll accept that awesome responsibility! - DAP 2004-03-19 10:44:43 (488 views)

And i thank you both :) - swinmachine 2004-03-19 10:51:28 (496 views)

"What's better for the engine" They are all fine. - W0LSC0D(Anti-Rice) 2004-03-19 10:35:20 (615 views)

Are boost spikes EVAR good for the engine? - reefer_bob 2004-03-19 10:32:43 (594 views)

Very nice simple explanation! Why didn't I think of that!? - W0LSC0D(Anti-Rice) 2004-03-19 09:24:32 (512 views)

Great info - a side note to others about the blue line - it can still taper down - DarinS4Turbo 2004-03-19 09:23:51 (733 views)

I added a "PPS" :o) - Mark P 2004-03-19 11:00:35 (551 views)

Good point Darin. Closed wastegates on K03's will taper down to 15 psi at redline. - Verrückt 2004-03-19 09:45:53 (825 views)

Exactly! Here is an example of a k03 car running MBC only and tapering.... - W0LSC0D(Anti-Rice) 2004-03-19 09:27:53 (1118 views)

Add a few plumbing diagrams for each setup and make it a tech - jbear@work 2004-03-19 09:17:42 (1454 views)

"Freak of nature"... I like that! :) - DAP 2004-03-19 10:43:41 (500 views)

so should we run MBC's? - 2000s4biturbo 2004-03-19 09:14:15 (594 views)

Absolutely no need if you happy with your current boost delivery. - W0LSC0D(Anti-Rice) 2004-03-19 09:47:12 (667 views)

In parallel with the N75, sure wouldn't hurt it seems.... - reefer_bob 2004-03-19 09:18:50 (777 views)

That about sums it up... This might be a good place also... - reefer_bob 2004-03-19 08:53:00 (889 views)

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