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Re: Thanks Jeff, what about the MBC+A ?
Posted by Dean (more from Dean) on Tue, 31 Aug 2004 13:15:59
In Reply to: Thanks Jeff, what about the MBC+A ?, CraigS, Tue, 31 Aug 2004 12:59:14
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The problem with pressure overshoots with a MBC is that when it decides to open the WG, it cannot pressurize and stroke the WGA fast enough. So from that point of view, you would want a softer WGA spring or tension. But no need to mess with that. With the MBC+A, the anticipator primes the WGA with a regulated amount of pressure in anticipation of the MBC flow. So when the MBC starts to flow, the WGA is prepressurized and the MBC flow can get to the business of getting the WG opening without delay. It is the delay of a naked MBC that causes pressure overshoots and fuel cuts. The MBC+A, fed from the TB, has rock solid boost with no boost droop unless the capacity of the turbo is exceeded, and there are no fuel cuts. It is simply boost perfected. I will be happy to assist with installs in the KC area*. Otherwise, its really quite easy to install and adjust. Jeff has stuff for the 9-3's and things should be very close for a T5 9K.
* The design is my concept, but I have not been able to install one myself as I no longer have a T5. I would like to do this.
All MBC's and MBC+A's should have appropriate mods to reduce intake and exhaust pressures. Boost increased engines should be on xW40 fully synthetic oil and use better filters. M1 [0|5]W40 and Purolator PureOne PL10241 suggested. BPCR7ES11's gapped to .037. Injectors clean... Techron Concentrate suggested. Best premium pump gas... avoid products labled as high ethanol. Do not get on boost with chapped lips, the grins will be painful.
posted by 65.68.10...
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