well maybe just throw cheap mbc on there, that way it could open up at a set pressure and keep your max fuel pressure down while allowing more fuel pressure in the mid-range
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wait that would work opposite? huh now i'm confused
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yeah, opposite. I'm crossing my fingers a 8:1 or 10:1 disc will allow the pressure to build faster at low boost, keeping the low/mid AFR richer, then the pressure regulator should cap the max pressure to the rail keeping the upper AFR in check. But we'll see tomorrow.
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Well I wasn't able to make it work to my likeings. I think the regulator failed on me, as it can't hold pressure anymore :(
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Honestly, I am starting to wonder if those things are worth it at all, I had a heck of a time setting up my BEGI unit to do anything but drown the motor with fuel. It might make more sense to use the emanage to run a pair of honkin' big extra injectors.
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Originally Posted by Mechazawa
(Post 56279)
Honestly, I am starting to wonder if those things are worth it at all, I had a heck of a time setting up my BEGI unit to do anything but drown the motor with fuel. It might make more sense to use the emanage to run a pair of honkin' big extra injectors.
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I think this idea has merit, but maybe a different approach with the BEGI unit.
Basically we want to set the rate of rise and cap the upper limit. The rate of rise is already adjustable (technically) via the needle valve. What if we drilled and tapped another hole to accept another barb for 1/4" vacuum line. A the end of the barb we have a MBC and a check valve. That way we don't modify the incomming amount of boost. Once we hit the target set by the MBC we vent the additional boost while still maintaing constant pressure on the FMU. This works for a wastegate, I don't see why this wouldn't work here. Basically you have an adjustable relief valve on the FMU. Pick it apart, or tell me someone already thought of it! Jay |
Or just T the MBC into the vac/boost signal line so it starts to bleed boost at whatever threshold you want, could even T in a boost gauge to set it up.
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Originally Posted by Mechazawa
(Post 56279)
Honestly, I am starting to wonder if those things are worth it at all, I had a heck of a time setting up my BEGI unit to do anything but drown the motor with fuel. It might make more sense to use the emanage to run a pair of honkin' big extra injectors.
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My situation improved after I ditched the standard check valve for a larger brake booster check valve (it was relatively easy to blow through). I picked up a smaller internal diameter vac hose for the signal line I am going to mess with this weekend.
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