Digital WUR

[s5uewf]

I'm always a fan of new technology that helps make these older cars perform better or more reliably. I was a big fan of the UTCIS unit, and I bought and installed one a few years back.

At this point, however, I feel I need to be balanced in my feedback and share.

When the unit works, it works very well, and I really enjoy being able to take advantage of the unit. Combined with an AFR meter I was able to tune a nice fuel curve for my 930.

However, the first unit short circuited because two sided tape was used inside the black box to secure the IC board to the base plate. Once warm, the adhesive released and the IC board shorted out. That unit was replaced.

The second unit worked until I tried to apply a firmware upgrade recommended by the vendor. The upgrade generated a "64 bit array" error as the upload was in process, freezing the upgrade and stalling the car. Vendor claimed likely firmware corruption which could occur on last generation units (not current generation).

I was told to return this unit for repair or upgrade. I offered to send money to hlep with an upgrade but was told not necessary.

That was last July 7th - yes July 7, 2009.

I am still without a repaired or replacement unit.

I get little communication, and when I do it is of the nature of "your unit is one of the next six", or "your unit is being machined", or "it should ship next week". this is now going on 9 months.

Last week, I sent two very cordial notes (all have been, and I am truly supportive of these guys and wish them success), and I have received zero feedback.

I thought I should share this with the forum, so this info can be balanced with the rest of the feedback, which is that this unit is easy to install, works very well, and does improve the 930 air/fuel management. I really like the concept and the product when it is working. I am however, disappointed that I have paid for a unit and have no unit after a 9 month wait for repair or upgrade.

I'll let you know when a repaired or replacement unit shows up.

[WERK I]

Emery,
You have the patience of a Saint! I hope everything works out OK for you and Unwired Tools.

[Craig 930 RS]

No way in heck would I buy one - not yet.

[boostfix]

With the Canadian dollar at near parity levels this would be the time to pull the pin on purchasing one of these.....but I will continue to wait.

[mark '87 930]

I've been following this thread as I have some fueling issues (warm start) and i am almost 100% certain it's the WUR.... this is definetly a great time to buy, but after reading some of the experiences, I as well am thinking it's best to wait. I am thinking of the leask adjustable WUR may be the more tried tested and trued approach. I just don't want to do all those mods unless I have another WUR..

[benzyne]

Pull the pin!

Originally Posted by boostfix

With the Canadian dollar at near parity levels this would be the time to pull the pin on purchasing one of these.....but I will continue to wait.

[marlinspike]

Originally Posted by s5uewf

I'm always a fan of new technology that helps make these older cars perform better or more reliably. I was a big fan of the UTCIS unit, and I bought and installed one a few years back.

At this point, however, I feel I need to be balanced in my feedback and share.

When the unit works, it works very well, and I really enjoy being able to take advantage of the unit. Combined with an AFR meter I was able to tune a nice fuel curve for my 930.

However, the first unit short circuited because two sided tape was used inside the black box to secure the IC board to the base plate. Once warm, the adhesive released and the IC board shorted out. That unit was replaced.

The second unit worked until I tried to apply a firmware upgrade recommended by the vendor. The upgrade generated a "64 bit array" error as the upload was in process, freezing the upgrade and stalling the car. Vendor claimed likely firmware corruption which could occur on last generation units (not current generation).

I was told to return this unit for repair or upgrade. I offered to send money to hlep with an upgrade but was told not necessary.

That was last July 7th - yes July 7, 2009.

I am still without a repaired or replacement unit.

I get little communication, and when I do it is of the nature of "your unit is one of the next six", or "your unit is being machined", or "it should ship next week". this is now going on 9 months.

Last week, I sent two very cordial notes (all have been, and I am truly supportive of these guys and wish them success), and I have received zero feedback.

I thought I should share this with the forum, so this info can be balanced with the rest of the feedback, which is that this unit is easy to install, works very well, and does improve the 930 air/fuel management. I really like the concept and the product when it is working. I am however, disappointed that I have paid for a unit and have no unit after a 9 month wait for repair or upgrade.

I'll let you know when a repaired or replacement unit shows up.

I posted this elsewhere in the forum but though I should post it here because it's relevant.

I had a UTCIS-PT in my car. I sent it to unwired tools to be upgraded to the new unit and because it had broken (would set the control pressure to 1.5 bar no matter what). On 2/19 they told me the unit had arrived the day before. They told me it would ship back to me 2/22. On 3/6 I e-mailed them to see if it had shipped. On 3/8 I got a response from Steve that he would look into it and get back to me later that day. I have e-mailed them twice since then (3/11 and 3/15). No response. I left a voicemail 2 days ago, still no response. My car cannot run without this, so basically I'm screwed.


Is there anybody else making something with the same functionality as the UTCIS-PT (can't be Porsche specific as my car is a modified Mercedes).

[s5uewf]

You may want to google Brian Leask for his mechanically adjustable WUR. It could be he can modify a Mercedes unit, since they are all similar.

I believe you send in your original WUR, and he modifies it and sends it back within a week.

[marlinspike]

Given that my mixture map looks like this, would the Leask unit give me enough adjustability? The real crappy thing in all this is I'm a grad student, so the money doesn't exactly flow like water.

[964 T #304]

you might go back to page 33 of this post and contact 911st about the one he built in 2002 using an andial frequency valve.

[dgmark]

I am looking at installing a digital wur on a 1988 930 track car. It currently is running without an 02 sensor and the timing valve is running at the default value, On Andial fuel enrichment system is handling fuel enrichment at higher bust levels. My question is can the timing valve and related wiring me removed when running a digital wur, or will the fuel head need to be backdated.

[zaidigonzo]

finally able to start trying the dwur adjustments. Adjusted fuel head idle screw and best I could get idling was 13 to 13.5. connected the dwur and started logging and went for a drive.....watched my innovative afr gauge and it goes to 14s on light load and 12-13 hard acceleration/ boost. high 15-16 on cruise and event higher for a split second when i let off the gas suddenly..
Came home BUT Im not quite sure what to do at this point to adjust. TOO many rpms and I dont exactly know what happens at each rpm to adjust up or down. Actually, not sure how to do this at all right now. Anyone near the tampa area that knows how to do this?

[marlinspike]

Originally Posted by 964 T #304

you might go back to page 33 of this post and contact 911st about the one he built in 2002 using an andial frequency valve.

Brian Leask says he thinks his solution will work well for me (while his website details the ones for turboed cars, he has other setups apparently). Until I hear back from UnwiredTools, I can no longer recommend their product, which is disappointing, because I thought it was awesome when it worked/I had it.

[marlinspike]

Originally Posted by zaidigonzo

finally able to start trying the dwur adjustments. Adjusted fuel head idle screw and best I could get idling was 13 to 13.5. connected the dwur and started logging and went for a drive.....watched my innovative afr gauge and it goes to 14s on light load and 12-13 hard acceleration/ boost. high 15-16 on cruise and event higher for a split second when i let off the gas suddenly..
Came home BUT Im not quite sure what to do at this point to adjust. TOO many rpms and I dont exactly know what happens at each rpm to adjust up or down. Actually, not sure how to do this at all right now. Anyone near the tampa area that knows how to do this?

It's normal for the A/F ratio to read lean when you take your foot off the gas - the AFR meter is simply being tricked. The things that are important are cruising and under throttle.

At this point, I would ignore rpms over 3000. Don't even bother going there. Make a map for 2500rpm. By this I mean figure out what control pressure you need at 2500rpm for the various amounts of manifold vacuum (remember, lower control pressure means richer mixture). Once you've done that, apply it to all the rpms. This will give you a good starting point to then start messing around. When you mess around, don't just suddenly floor it to redline, go little by little to make sure you don't blow something up (now, I say that as a warning, but really the map that is ideal at 2500rpm will likely be very close at all other rpms, except for maybe the high rpm and low rpm extremes). There's no substitute for a dyno for making the full-throttle map though.

[marlinspike]

Well, I just heard back from Unwired. Apparently they were working on a parts availability issue. I wish they had better communication (simply saying "hey, it's going to take a few weeks longer than we thought" is a lot more comforting than silence), it's better than the alternative explanation I had arrived at in my mind.

[s5uewf]

I still have not heard from them at all since February, when they told me my unit would ship soon. I've sent at least 3 notes since then asking for an update.

I sent my original WUR to Brian Leask today.

[mark '87 930]

Strange, I sent them an email inquiring about the total, including shipping to Canada... got a response within 24hrs.

[cole930]

I called and left Steve a message about 2 weeks ago, he called me back the next day.

Cole

[marlinspike]

Originally Posted by s5uewf

I still have not heard from them at all since February, when they told me my unit would ship soon. I've sent at least 3 notes since then asking for an update.

I sent my original WUR to Brian Leask today.

Steve did mention that he had mine and one other guys that had come in for repair/upgrade and that we were both on the list to be called today. Maybe you're the other guy?

[cole930]

That would be great !!!! Heres hoping.


Cole