manual boost contoller
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Originally Posted by mmboost
How could a mechanical device, a spring and a ball at best, which is fully subject to ambient temperature (at the least), be equally as accurate as an electronic solenoid of equal boost hold rating which can adjust itself scores to hundreds of times a second, fully able to compensate for ambient constituencies? How could a MBC know the difference between slowly rising boost and fast rising boost? Most MBC are prone to some sort of spike and pretty much all cannot maintain (up or down) boost levels with the same (or any) sort of accuracy like a BCS. And, to really hit it home a dual solenoid setup like the Blitz Spec-R or SBD-iD is incredibly accurate and does a great job at mainting boost and holding creep at bay.
jason
jason
A quality ball and spring MBC will maintain consistant boost regardless of ambient temps because its working against a simple pre-loaded spring that doesn't care what the temp is. Such an MBC will also be very good at keeping spikes to a minimum if the ball is light weight and the spring is well matched to the boost level you're running. The ball can move much faster than boost can rise and makes for very solid, steady boost with no spiking at all. Also, by the nature of the design, a good ball and spring MBC will bring boost up as quickly as POSSIBLE and most EBCs can't claim that. Again, we're talking about a quality MBC here... not the cheapo ones... those will exhibit spiking and inconsistency.
To match this sort of behaviour with an EBC, the EBC will need to be very suphisticated. It will need to have closed loop control over boost, a very fast and accurate solenoid set up as an interupt to bring boost up quickly, temperature and baromatric pressure compensations to keep boost levels consistent and steady, and a lot of tweaking to get it all to work right. None of the moderately priced EBC's out there have all of these features... hell even our OEM ECUs or UTEC don't have all of these features and end up not working as well as a quality MBC that costs a lot less and is a lot more simple to set up.
I'm all for electronics and controllers, but IMO boost control, by nature, is better suited for a nice, simple, mechanical system.
-- Ed
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Originally Posted by vaus
Jason,
A quality ball and spring MBC will maintain consistant boost regardless of ambient temps because its working against a simple pre-loaded spring that doesn't care what the temp is. Such an MBC will also be very good at keeping spikes to a minimum if the ball is light weight and the spring is well matched to the boost level you're running. The ball can move much faster than boost can rise and makes for very solid, steady boost with no spiking at all. Also, by the nature of the design, a good ball and spring MBC will bring boost up as quickly as POSSIBLE and most EBCs can't claim that. Again, we're talking about a quality MBC here... not the cheapo ones... those will exhibit spiking and inconsistency.
To match this sort of behaviour with an EBC, the EBC will need to be very suphisticated. It will need to have closed loop control over boost, a very fast and accurate solenoid set up as an interupt to bring boost up quickly, temperature and baromatric pressure compensations to keep boost levels consistent and steady, and a lot of tweaking to get it all to work right. None of the moderately priced EBC's out there have all of these features... hell even our OEM ECUs or UTEC don't have all of these features and end up not working as well as a quality MBC that costs a lot less and is a lot more simple to set up.
I'm all for electronics and controllers, but IMO boost control, by nature, is better suited for a nice, simple, mechanical system.
-- Ed
A quality ball and spring MBC will maintain consistant boost regardless of ambient temps because its working against a simple pre-loaded spring that doesn't care what the temp is. Such an MBC will also be very good at keeping spikes to a minimum if the ball is light weight and the spring is well matched to the boost level you're running. The ball can move much faster than boost can rise and makes for very solid, steady boost with no spiking at all. Also, by the nature of the design, a good ball and spring MBC will bring boost up as quickly as POSSIBLE and most EBCs can't claim that. Again, we're talking about a quality MBC here... not the cheapo ones... those will exhibit spiking and inconsistency.
To match this sort of behaviour with an EBC, the EBC will need to be very suphisticated. It will need to have closed loop control over boost, a very fast and accurate solenoid set up as an interupt to bring boost up quickly, temperature and baromatric pressure compensations to keep boost levels consistent and steady, and a lot of tweaking to get it all to work right. None of the moderately priced EBC's out there have all of these features... hell even our OEM ECUs or UTEC don't have all of these features and end up not working as well as a quality MBC that costs a lot less and is a lot more simple to set up.
I'm all for electronics and controllers, but IMO boost control, by nature, is better suited for a nice, simple, mechanical system.
-- Ed
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The temperature would have to be very extreme to actually deform the spring. Ambient temps would deffinately have no effect on this, and even the hot boost isn't enough to do anything to the spring. If this were true, the spring inside the swategate would also be "deformed"
-- Ed
-- Ed
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Originally Posted by ride5000
atmospheric changes affect bleed type systems FAR more than they do interruption based BC systems.
ken
ken
The reason a ball and spring MBC isn't nearly as effected by weather changes is that its based on a pre-tensioned spring, which is more directly related to pressure, and is not effected by reasonable temperature changes.
-- Ed
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