Frankencis on a KJet ? anyone use one?

TimS · 12-24-2020, 08:20 PM

I'm having issues with my Kjet WUR on a stock 1985 turbo.

http://www.frankencis.com/frankencis/

Has anyone used one? It replaces the WUR but can also be hooked up and make the KJet tunable via Microsquirt/MS2. I know I could just change the whole thing to EFI but not sure it would pass smog in CA.

its about $400 but you also have to make a simple wiring harness and get a MS or micro to run it.

Seems to be big with the Porsche people. But on the pricey side for my Volvo. Although a rebuilt WUR ain't cheap.

Maybe a speeduino would cut the cost a little?

c1800 · 12-24-2020, 11:27 PM

Whoops! Thought you were referring to Frankincense, given the date.....

apachechef · 12-24-2020, 11:47 PM

Myrhh is better, OEM Myrhh best.

OttoB · 12-25-2020, 06:24 AM

One Golf rally car has wur replaced with common adjustable fuel pressure regulator. I would have that to set base control pressure and bleed that pressure lower for cold starts and high loads.

Bleeding that control pressure could be done with frequency valve and MS.

leecatd8209 · 12-25-2020, 08:31 AM

I've never seen this. Scientific Rabbit used to sell a much cheaper option that would react to a wideband gauge, and had some tuneability if I remember properly. It should work on Volvo KJet.

Their website is much more vague than I remember, maybe try contacting them.

dl242gt · 12-25-2020, 03:11 PM

Here is another aftermarket solution for bad control pressure regulators. https://unwiredtools.com/utcis.asp

PCH · 12-25-2020, 04:03 PM

The ones from Mercedes are easy to find at the wrecking yards. And with dual vacuum/pressure compensation chambers are fun to experiment with- I had one on my K-jet frankensteined from all kinds of Porsche/Audi/Volvo CIS parts. Bosch stuff is very interchangeable.
They also very easily can be made adjustable to set the baseline cold pressure.

12-24-2020, 08:20 PM	#1
TimS Board Member Join Date: Dec 2017	Frankencis on a KJet ? anyone use one? I'm having issues with my Kjet WUR on a stock 1985 turbo. http://www.frankencis.com/frankencis/ Has anyone used one? It replaces the WUR but can also be hooked up and make the KJet tunable via Microsquirt/MS2. I know I could just change the whole thing to EFI but not sure it would pass smog in CA. its about $400 but you also have to make a simple wiring harness and get a MS or micro to run it. Seems to be big with the Porsche people. But on the pricey side for my Volvo. Although a rebuilt WUR ain't cheap. Maybe a speeduino would cut the cost a little?

12-25-2020, 03:11 PM	#6
dl242gt Happy playing the blues Join Date: Jun 2002 Location: S NJ, a suburb of Phila.	Here is another aftermarket solution for bad control pressure regulators. https://unwiredtools.com/utcis.asp __________________ Dave, 1982 242 turbo. 338k miles. MVP coilovers and 3" exhaust. Flowed 405 with a V15. Cossie turbine housing with upgraded compressor housing. 90+, IPD remote oil filter. Some other goodness, too. Been lots of fun over 25 years. Restored in 2k. Now ready for a 2nd restoration. 1993 245 Classic, 430k miles, enem V15. IPD bars and chassis braces. Simons sport exhaust from Scandix. sbabbs ezk chip. Been a good road warrior. Genuine Volvo rebuilt leaky M47.

12-25-2020, 04:03 PM	#7
PCH Board Member Join Date: Oct 2008 Location: Oxnard, SoCal	The ones from Mercedes are easy to find at the wrecking yards. And with dual vacuum/pressure compensation chambers are fun to experiment with- I had one on my K-jet frankensteined from all kinds of Porsche/Audi/Volvo CIS parts. Bosch stuff is very interchangeable. They also very easily can be made adjustable to set the baseline cold pressure. __________________ Feedback: http://forums.turbobricks.com/showthread.php?t=341280 Last edited by PCH; 12-25-2020 at 04:09 PM..

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12-24-2020, 11:27 PM	#2
c1800 Board Member Join Date: Jun 2014 Location: Alberta	Whoops! Thought you were referring to Frankincense, given the date.....

12-25-2020, 06:24 AM	#4
OttoB Board Member Join Date: Aug 2006 Location: E(Seattle!Vancouver! San Francisco!LA!) Helsinski	One Golf rally car has wur replaced with common adjustable fuel pressure regulator. I would have that to set base control pressure and bleed that pressure lower for cold starts and high loads. Bleeding that control pressure could be done with frequency valve and MS.

12-25-2020, 08:31 AM	#5
leecatd8209 Board Member Join Date: Jul 2015 Location: South Texas	I've never seen this. Scientific Rabbit used to sell a much cheaper option that would react to a wideband gauge, and had some tuneability if I remember properly. It should work on Volvo KJet. Their website is much more vague than I remember, maybe try contacting them.