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Old 03-22-2009, 11:05 PM   #1
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Default Going back to MBC ... with benefits!

This weekend I decided to go back to an MBC, after getting fed up with the moody behavior of a boost solenoid via Megasquirt. I decided the hassle of the EBC just isn't worth the benefit of throttle position settings.

I mentioned this to Paul, who said he's been considering the same thing. He had a great idea: we can use the boost solenoid TPS option as a way to activate the MBC! So you get the best of both worlds.

I sorta-kinda understood, so Paul made this useful diagram:


What we'll do is set all the top rows in the EBC table to 100%, and all the bottom rows to 0%, with the change at any percentage (for example 30, 40, 50) .... that way you have just actuator pressure at first (with the solenoid letting pressure pass through, effectively creating a "massively leaking" MBC) followed by 100% MBC pressure with the solenoid blocking the bypass route.

This is a very simple and very clever idea.
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Old 03-23-2009, 01:59 AM   #2
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Yeh thats cool!

Seen something recently that is quite similar. Looks like a few people don't like the EBC with MS unless it has extra help.
EBC MBC

Not my idea though.
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Old 03-23-2009, 02:10 AM   #3
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Oh. I guess it's not that original an idea after all.
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