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Digital WUR????

I have heard that a digital WUR is now being made. I would like to know more about it.

Anybody tried them or learned up on them?

Is there a website with info about digital WURs?

Thanks!
Old 01-13-2007, 11:49 AM
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Crotchety Old Bastard
 
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Here you go:

http://www.unwiredtools.com/utcis.html#UTCIS
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
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Old 01-13-2007, 07:54 PM
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Looks interesting!! Brian do you know the price on one??
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Old 01-14-2007, 09:34 PM
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As the ad states, they do not yet have a 930 unit in production.
I have not looked any further into it than just finding that they do in fact exist. I plan to do something like that in the near future but will try a fully adjustable unit first.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 01-15-2007, 03:54 AM
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Quote:
Originally posted by RarlyL8
Here you go:

http://www.unwiredtools.com/utcis.html#UTCIS
Those units don't seem very adjustable at all. I wouldn't bother with these and would go for Brian Leasks setup.
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Old 01-15-2007, 08:38 AM
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I talked to Frank Ableson at Unwired Tools yesterday to see where they are on this latest product. He couldn't commit yet on a date but they are actively working on it. He did seem to recognize there is a demand for something like this...hopefully it will be available sooner then later.

Sounds like it will provide fuel pressure adjustablility driven by boost and rpm via electronics.
Old 01-16-2007, 09:28 AM
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I use a Greddy fuel injector controller hooked up to a fuel injector between the WUR and the fuel return line to control fuel pressure. Works off of map, RPM and boost and is fully adjustable. Works great.

Last edited by lite75; 12-02-2007 at 12:15 PM..
Old 01-16-2007, 04:13 PM
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This same discussion is going on over on Rennlist...and I posted the comments I received from Unwired....they are going to sell for $599.
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Old 01-16-2007, 04:55 PM
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"I use a Gretty fuel injector controller hooked up to a fuel injector between the WUR and the fuel return line to control fuel pressure. Works off of map, RPM and boost and is fully adjustable. Works great."

Welcome and please explain this setup.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 01-16-2007, 07:13 PM
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"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno
Old 01-16-2007, 07:33 PM
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Lite75....welcome! One post and you hit us with this!! Very nice!!!

This is an interesting solution. The injector between the wur and fuel head sounds like the same placement as the frequency valve on the closed loop systems. How is the fuel pressure drop from the WUR (while on boost) managed?
Old 01-17-2007, 07:15 AM
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The Greddy controller has a map sensor so you can pulse the injector as the boost rises, very tunable. I use a fuel pressure gauge on the control pressure and a wide band O2 sensor to tune with. You can run your fuel distributor at max flow if needed.
It is exactly like the frequency valve. Might even be able to control a stock valve with a controller like this.

Dan

Last edited by lite75; 12-02-2007 at 12:14 PM..
Old 01-17-2007, 07:37 AM
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Nice!

So The WUR can behave in its "stock" form, and you play with the control pressure using the frequency valve/fuel injector to get more fuel when you want it. I believe the Andial uses the same solution but with out the RPM being a variable for control.

Which Gretty controller are you using?
Old 01-17-2007, 07:53 AM
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Using a Rebic IV. Warm up regulator works like stock. Andials fuel enrichment is not very tunable. it comes on at a predetermined boost level and all you can do is adjust the pulse to one setting, with the Greddy and you can tune it to be progressive. VERY tunable.
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Last edited by lite75; 12-02-2007 at 12:15 PM..
Old 01-17-2007, 08:16 AM
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"Andials fuel enrichment is not very tunable. it comes on at a predetermined boost level and all you can do is adjust the pulse to one setting"

Exactly.
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno
Old 01-17-2007, 08:29 AM
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Craig, that's not "exactly" correct. Be careful, I don't want to get into this with you on a public forum.

The andial I saw work had several pulse settings. You pick a setting and it would run the frequency valve at a different percentages. But like you mentioned, not vs a variable boost/RPM which is what we need/want which makes it not much more then a bandaid.

Dan, I see your in Bellingham. You ever make it down south???
Old 01-17-2007, 09:20 AM
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"Be careful?" Well, Jeff since you brought it up...

Jeff, don't even start your confrontational 'I'm right on everything and can't explain a damn thing' crap here.

(Some real past (local) history of rudeness and name calling here.)
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno

Last edited by Craig 930 RS; 01-17-2007 at 09:34 AM..
Old 01-17-2007, 09:31 AM
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The long and the short of the Andial system is that it is insufficient to support even a modified 930.
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Old 01-17-2007, 11:27 AM
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Jeff said he's seen an Andial that has.

I've spoke to others who have actually owned one, and could never get accurate and even fuel delivery from 3,000 to 6,800 as the Brian Leask adjustable WUR has shown it can.

I tend to go with what is proven to work, but 'that's just me'.
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno
Old 01-17-2007, 11:35 AM
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Quote:
Originally posted by Craig911
Jeff said he's seen an Andial that has.

I've spoke to others who have actually owned one, and could never get accurate and even fuel delivery from 3,000 to 6,800 as the Brian Leask adjustable WUR has shown it can.

I tend to go with what is proven to work, but 'that's just me'.
I've only seen 1 Andial unit in operation, and I saw the same unit removed from that car and later sold as he went to EFI. I agree that this unit, although prolly one of the easiest to install/set up (and 'maybe' one of the best when it was first developed), is not the best solution.... The modified WUR (and possibly this digital one, price excepted) semms to be the best way to go when bridging the gap between CIS and EFI.

Am I wrong in understanding that Andial has sold this unit for over 10 years? That says a lot about it, but it also says that someone 'should' have produced a better mousetrap recently....
Old 01-17-2007, 11:47 AM
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