Manual Boost Controllers - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Manual Boost Controllers
Posted by T Randell (more from T Randell) on Wed, 13 Jun 2001 09:09:03
In Reply to: Re: K&N Air Filter & Cheap Performance, Dean, Tue, 12 Jun 2001 16:46:20
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As I understand it from past dialog on the subject of manual boost controllers (MBC) that it is not possible to increase the max. boost by much , if any, since fuel cutoff will occur. The main imnprovement is faster boost response time, since ECU is not controlling the BPC valve to control (slow??) the rate at which boost is acheived. I also undertand that a MBC works better with the Trionic T5 system (1999) then the T7 system (2000 +), not sure why. I am considering a MBC but I am concerned that disabling the BPC might also remove certian features that are designed to protect the engine, such as reducing boost when "knock" in the engine is sensed by the ECU. Anyone know anything about this? Also, if you don't increase the max. boost is the Sports exhaust really all that nessecary if you install a MBC?
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