2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

fd uim and bac valve

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Old Jul 10, 2012 | 07:52 PM
  #1  
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From: fleetwood,pa
fd uim and bac valve

Ok planning on using a fd uim, the fc and fd bac valves are similar so my question is can it be wired up to use with the stock ecu. Ive searched but all ive found is the tps rewire. Any help or links is much appreciated.
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Old Jul 17, 2012 | 04:39 AM
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XBLADE's Avatar
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From: Pompano, Florida
I was looking into this.

Found this:

Rising RPM

But when looking at what people gained from doing this didn't seem like much.

Anyone got this setup running on their FC?
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Old Jul 17, 2012 | 08:28 AM
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From: Smiths Falls.(near Ottawa!.Mapquest IT!)
It actually just got released into the market on the 28th of June.
BUT,I got one,of Course,like white on Rice!..here it is on the car and I am just buttoning it up now to test it.
Oh,the upper manifold is bare,no BAC..nothing.(twin butterflies removed,bare bones throttle body)
Attached Thumbnails fd uim and bac valve-driveshaft-godzilla-car-007.jpg  
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Old Jul 17, 2012 | 08:56 AM
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Had been wondering what people do about this myself.
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Old Jul 17, 2012 | 01:28 PM
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From: https://www2.mazda.com/en/100th/
use the FD valve, its electrically the same, and its bolted to the manifold...
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Old Jul 17, 2012 | 03:48 PM
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From: allentown pa
i have been running a fd upper for a couple of years now and at first i had the fd bac and s4 tps running and working fine.
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