nix930

Unwired tools now offers a digital WUR for a 930. They claim to have sold 400 of them. Does anyone have experience with the Holy Grail?

My 930 runs rich at low rpms and leans out at high rpms on boost. I'm looking for a non-EFI solution.

Falk930

We are waiting for the first "real" results.
I like to see only one AFR log from one of these 400 sold units.

Falk

biglicks

nix930,

there is a thread you can keep an eye on here for progress https://rennlist.com/forums/911-turbo-930-forum/422450-the-new-digital-warm-up-regulator-has-now-hit-that-market.html

Steve

stu.p

400 units sold?
Certainly i have only heard of 1 person who has purchased this application for the 930/965 dont get me wrong hope it does work though!

aeschen

I am guessing they are talking about all cis applications combined

stu.p

Maybe it is the figures for all the units combined but the one for the 930/965 turbo will be more of a complex design!

jetskied

Nix I have the unit and initial runs I have made with the unit is that it will solve some of your problems. I have not done a full boost AFR reading, but my 0.5 bar reading are 11.4 AFR. I'm running AFR 14.0 at idle. The unit is promising and I need to do more tuning to get a better idea. Holly grail maybe not, but it seems like a good non EFI solution.

nix930

I received the Unwired Tools UTCIS-PT digital warm up regulator and installed it on my highly modified 930. The installation of the product was simple. The user interface for tuning is easy to use. My contact at the company was Steve Schlander, who has been an amazing help throughout this process. He informed me of the upcoming upgrades. The built-in AFR gauge should allow tuning without a dyno! When I got stuck, I called Unwired and Frank tuned my fuel flow over the internet!

With the original warm up regulator my fuel mixture was fat in the mid range and dangerously leans above 6,000 RPMs. For example at 3,700 RPMs my AFR was 10. At 6,150 RPMs, my AFR was 13.9.

We leaned the AFR at 3,700 RPMs to 10.57 and richened the AFR at 6,150 RPMs to 12.81. We then continued the next run up to 6,250 RPMs with an AFR of 12.83. I was completely satisfied with how this digital WUR was able to flatten the AFR curve. With additional fine tuning I am confident that we could have gotten it flatter, but it was late at night and we all needed to get home. I may do some additional tuning in the near future, but I achieved my major objective. I CAN NOW DRIVE MY CAR ON THE TRACK!!!!

My drive home from the dyno was 75 miles during which I noticed an added bonus. My gas mileage on the street doubled!

This product is a great inexpensive alternative to EFI. I am not saying that this replaces EFI but if you need to fine tune your AFR you no longer have so spend several thousand to do it. For my car, there was no money better spent than on Unwired Tools UTCIS-PT.

I have several track events planned for July and will provide an update.

stu.p

Good stuff!..I also have the unit now fitted although tuning is not 100%complete,,This only is my opinion but do you not think you could tune it more and see nearer 12.0 afr at max revs,especially if you are tracking the car i would defo like to see more fuel up top and less down low,unless you have different mods to the more common ones we see on this board.

__________________
Porsche inspector for Peter Morgan UK
http://www.petermorgan.org.uk/inspection.htm
"92" 964 turbo,recently rebuilt using all ARP hardware.Modified heads,SC cams 1 bar boost,headers,wastegate/ tial 0.8 spring to acheive 1 bar,cat bypass,own adj wur,rpm switch,powerflow air intake..bilstein hd with h&r springs,front carbon strut brace

JBL930

Nix, what boost are you running? If you are 1.0bar or over you are heading for meltdown with those AFR's. Anything over 12.2 is too lean for comfort, especially when you are taking the reading from one sensor after the turbo. I would head for 12.0 or even high 11's whilst on boost.
You want to see your AFR's drop rapidly at boost threshold and whilst on boost to the very low 12's or high 11's.
On cruise and up to boost threshold you can be in the mid/high 14's.

You really need to know what your targets are with your fuel mate otherwise you'll end up with a rebuild on your hands! It sounds like you're getting some bad advice!

DWalker

Agree with above- in an air-cooled car you really should see mid-11 AFR under boost, and the more boost you run- IMHO much over 1 bar- the closer to 11.0 you should be. This should be dialed in on a dyno or at the very least a loggable wideband.

nix930

I’m running a stock .8 bar boost spring. However, my vacuum gauge shows .9 bar. We used a wide band O2 senor in the tail pipe running at 150+ mph.

My goal is a flatter AFR curve that is richer at high RPMs and we still have more tuning to do. The 12.83 AFR was the highest value on the curve and it needs to be addressed. I’m running an AFR of 11.74 at 6,400 RPMs. We simply ran out of time and need to get back on the dyno. The UTCIS is tuned in 250 RPM increments.

This was our first experience with the UTCIS and I am very satisfied. I’m now generating over 400 ft lbs of torque with much safer AFRs than the stock WUR was capable of delivering. I hope I’m hitting the limits of my (Image Auto) fuel head.

By the way, has anyone priced an OEM WUR lately? This was a great value.

stu.p

My install pictures of utcis pt model

http://forums.pelicanparts.com/showt...379783&page=10