Digital WUR????

[DDDD]

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!

[RarlyL8]

Here you go:

http://www.unwiredtools.com/utcis.html#UTCIS

[9dreizig]

Looks interesting!! Brian do you know the price on one??

[RarlyL8]

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.

[NathanUK]

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.

[jeff91C2T]

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.

[lite75]

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.

[Chuck Jones]

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.
Chuck

[RarlyL8]

"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.

[Craig 930 RS]

Pictures would be cool too.

[jeff91C2T]

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?

[lite75]

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

[jeff91C2T]

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?

[lite75]

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.

[Craig 930 RS]

"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.

[jeff91C2T]

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???

[Craig 930 RS]

"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.)

[930LDR]

The long and the short of the Andial system is that it is insufficient to support even a modified 930.

[Craig 930 RS]

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'.

[kellcats521]

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....