How to lower boost?
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Curiosity, why? Another de-tuning thread? Not to pirate the thread, so heres your answer. No, you can lower boost from stock with any manual boost controller, but be prepared for the car to run less than consistent and not as intended.
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Originally Posted by feldguy
....be prepared for the car to run less than consistent and not as intended.
What? Any other time, I would not say this, because of how I drive, but since when does the Evo HAVE to be driven at WOT and always over 16PSI in order to be consistent? I'm not following your logic, unless you are simply joking and implying that you must drive the car to the limit every time you get in it (personally, I'm not happy unless I do that in my car, but it isn't required to keep the car running ).
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I have an MR I just installed a MBC and with it closed, it peaks at a tiny touch over 1.5 bar, and it still tapers down to 1.2-1.3bar , and if the valve is closed and by opening it I am allowing more boost how can I shut it down a ttouch, to 19-20psi
Even before the MBC it peaked the same, but I thought it should hold the boost to redline
I'm troubleshooting
reasonable enough
Even before the MBC it peaked the same, but I thought it should hold the boost to redline
I'm troubleshooting
reasonable enough
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Originally Posted by herbal77
I have an MR I just installed a MBC and with it closed, it peaks at a tiny touch over 1.5 bar, and it still tapers down to 1.2-1.3bar , and if the valve is closed and by opening it I am allowing more boost how can I shut it down a ttouch, to 19-20psi
Even before the MBC it peaked the same, but I thought it should hold the boost to redline
I'm troubleshooting
reasonable enough
Even before the MBC it peaked the same, but I thought it should hold the boost to redline
I'm troubleshooting
reasonable enough
Open should take the car down to wastegate pressure (11PSI).
Closed should take you as tight as the spring inside the MBC will hold.
I'm thinking that if you have all your hoses ran right (and both of the restrictor pills removed) that you probably have too high of a spring tension inside the MBC.
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Originally Posted by 90GSX-03EVO
What? Any other time, I would not say this, because of how I drive, but since when does the Evo HAVE to be driven at WOT and always over 16PSI in order to be consistent? I'm not following your logic, unless you are simply joking and implying that you must drive the car to the limit every time you get in it (personally, I'm not happy unless I do that in my car, but it isn't required to keep the car running ).
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when i screwed it all the way open , it spiked over 25 psi, so I screwed it closed and thats where it acted like stock, with peaking and tapering, but If i cant close it anymore how do I lower boost
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Originally Posted by herbal77
when i screwed it all the way open , it spiked over 25 psi, so I screwed it closed and thats where it acted like stock, with peaking and tapering, but If i cant close it anymore how do I lower boost
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Originally Posted by feldguy
Fair reply, my logic is simple. When I turn my boost down in my car, my car hits differnet boost levels all over the place. Essentially, it is counter productive in the sense that the fuel mapping is intended for the car to run one way, and with a MBC set lower, it will not be tuned correctly. Its not bad, but its a waste just the same. I like mine set at 19, all the way...to each his own.
I have an HKS EVC 5. I have Mode A set to 15 PSI and Mode B set to 20 PSI. I can toggle between modes whenever I want, raising or lowering the boost at will and with ease. When the unit is turned off, the turbo presses to 11 PSI every time, from 3000 to redline, in every gear. When commuting, I usually just drive around with the EVC 5 turned off, but when I want to drive aggressively, I turn it on and go to work.
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Originally Posted by herbal77
it was supposedly professionally done