q2quest

<center><img src="http://pictureposter.audiworld.com/67740/mbc_002.jpg"></center><p>When my car was converted to K04s and a GIAC X-chip the installer connected this little device to some vacuum lines. Is this an MBC or voltage clamp? I removed it just to see what would happen because I'm like that. What risk am I taking?

Mike2kS4

Shaking head... A MAF clamp is electrical.

Bramell-EVOvert

Not really a big risk.

davenew

I used the same thing on various turbo saabs. I still have one sitting in the garage. It was devised by Gus Mahon, the guy who had his minivan running 12's in the 1/4 mile. I think he had a big IC from a turbodiesel truck on his '89 chrysler van. He had some great turbo info but was killed in a motorcycle accident last year. Click on the link to read about MBC theory and how to adjust it.<ul><li><a href="http://www.dawesdevices.com/boost.html">http://www.dawesdevices.com/boost.html</a></li></ul>

ModifiedA4

therefore there is no way it could be a voltage clamp

vegasS4

Its meant to keep the boost in check when run paralell to the system. Im assuming you did not do any type of fueling change, or are going the homebrew solution. But you really need to put that back on there. Like i stated GIAC-X is KO3 software. when you request 1bar on KO3 (as the ecu thinks is still in place) is going to produce ALOT more boost with KO4's. You could damge things if not in place with you current setup

OCA::DIY Motorsports

Its a 2.7T Darwin device. Your motor is now in the running for a mechanical Darwin award.