mbc question

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Jul 5, 2006 | 10:52 AM

germancarmaniac

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1st Gear

Joined: May 2005

Posts: 485

From:

mbc question

just got my mbc in and was wondering what it should be set at. Dont worry, i have a boost gauge but i was thinking about 18psi? what do yo guys think? thanks

Jul 5, 2006 | 10:53 AM

germancarmaniac

Thread Starter

1st Gear

Joined: May 2005

Posts: 485

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RE: mbc question

oh yeah, my car is still running the stock turbo. Just chipped, intake, and exhaust

Jul 5, 2006 | 11:08 AM

blackvision999

Banned

Joined: Apr 2006

Posts: 42

RE: mbc question

what year and it should already be spiking 18 psi chipped no? if u think that a mbc is goin to hold 18 to redline ur wrong. its the turbo itself doin that.

Jul 5, 2006 | 11:37 AM

RLB6

1st Gear

Joined: Jun 2006

Posts: 180

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RE: mbc question

Quote:

ORIGINAL: blackvision999

what year and it should already be spiking 18 psi chipped no? if u think that a mbc is goin to hold 18 to redline ur wrong. its the turbo itself doin that.

Usually, a MBC will hold whatever boost level the turbo is CAPABLE of holding. So, the question becomes, can the stock K03 turbo hold stable boost at 18 psi in the high revs?

Jul 5, 2006 | 02:52 PM

prodrive

Senior Member

Joined: Aug 2005

Posts: 190

From: Istanbul

RE: mbc question

If you are not chiped ,don't go over 12 psi

Jul 5, 2006 | 03:30 PM

Jeff

Zombie Defense Force

Joined: Jan 2005

Posts: 7,782

From: Dallas

RE: mbc question

ahhh the time old problem...
cant turn the boost up unless you turn the fuel up
obtw i ran about 25 psi with stock tuning using a mbc. im lucky i didnt blow the motor i just blew the turbo.

Jul 5, 2006 | 07:05 PM

dafrazi

2nd Gear

Joined: Apr 2004

Posts: 787

From: Norristown, PA

RE: mbc question

Only set it for a couple pounds over what your boost gauge is reading as your current maximum boost.

Jul 5, 2006 | 08:29 PM

germancarmaniac

Thread Starter

1st Gear

Joined: May 2005

Posts: 485

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RE: mbc question

thanks for the feedback guys, sorry i havent been on till now(work). Im running about 16 psi and 18 spike. So what now? set it at 18 or at 20 and do you think it would help in anyway to go with a 4 bar fpr? thanks

Jul 5, 2006 | 08:35 PM

dafrazi

2nd Gear

Joined: Apr 2004

Posts: 787

From: Norristown, PA

RE: mbc question

I wouldn't set it any higher than 20. Personnally, I would set the MBC at 18. Don't mess with the FPR unless it's broken.

Jul 5, 2006 | 08:39 PM

#10

prodrive

Senior Member

Joined: Aug 2005

Posts: 190

From: Istanbul

RE: mbc question

Quote:

ORIGINAL: Jeff

ahhh the time old problem...
cant turn the boost up unless you turn the fuel up
obtw i ran about 25 psi with stock tuning using a mbc. im lucky i didnt blow the motor i just blew the turbo.

Uhh..Jeff I don't bleave that you run 25 psi w/MBC crazy ...
How did you set the AFPR ? How did the engine adjust the fueling before the turbo spools