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Old 03-22-2010, 02:33 PM
packlet packlet is offline
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Dual Curve LPG fuel controller 59681 vs 5952?

I'm converting my '82 E350 w/400 (carburated non-catalyst open-loop) to run on propane (only, not dual-fuel).
I was looking for a closed-loop controller like the Dual Curve 5952 (see http://www.dualcurve.com/5952-frm23749.pdf).

I know Raso's has something similar: LPG/CNG Feedback Fuel Controller Raso Enterprises Auto Parts

but for a fraction of that cost, i picked up a new Dual Curve fuel controller 59681 and I'm wondering if this will work for me. It came without any instructions, but i have posted pix & details here: Dual Curve Fuel Controller III PN 59681 on Flickr - Photo Sharing!

As far as i can tell, the difference is that the 5952 has extra inputs including tachometer. Can anyone suggest if not having the RPM as input to the controller will be OK or a problem?

Thanx for any constructive input.
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Old 03-22-2010, 03:26 PM
packlet packlet is offline
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hm, upon further digging, the EEETEE unit that Raso's sells does not rely on RPM or TPS input, so it must be feasable: Eee Tee Digital Design Limited

let me rephrase the question then: What sort of processing/adjustment does the 5952 do with RPM and TPS input that the other processors are able to do without?
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Old 03-22-2010, 06:23 PM
packlet packlet is offline
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Doh! apologies, diesel guys. i posted in the wrong forum. meant for the alternative fuels forum, not related to diesel w/ propane injection...
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Old 03-22-2010, 08:00 PM
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Rushmore X Rushmore X is offline
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that's ok, welcome anyway.
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Old 03-22-2010, 08:00 PM
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