BMW 325i M54 2001 Lambda?

Braucht dieses Auto in Prins Ecu Lambdasonden-reglerung oder nicht? Wenn Ja, bitte sagen, warum? Wenn möglich, bitte in Englisch...
Danke

 

Thank You!

I have updated Ecu with SW S212s and set next parameters:
pressure 2,2 Bar (by default)
-RC_inj 133
-Off_inj -20
-Lambda 0 (off)
and due to oscillating at idle after FCO AFCO -10%

Injectors Orange

I have INPA too and and cars Lambdaintegrator shows to me -0,5-- -1,0 % (Multiplikative).

But... on car idling, he's still prone to oscillate on LPG. BTW, Vanos is ok (new seals).
Is this BMW-s probem or PRINS thema and do i have to eliminating this issue install also MAP-sensor and modify the reducer as suction controlled?

 

Hi

I wrote, that off_inj is -20, not -30.
If i see Prins dedicated manuals for M54 installation, then they also are written off_inj in minus (-15). It refers to as in idle the gas pressure should be lower. I try with MAP sensor and suction controlled reducer. Only remains unclear, why the factory identifying idle and partial load mixture problems, is'nt itself immediatly installed and recommended MAP sensor asw.

Injection is performed with inline hoses. This is'nt my installation, but Poles. BTW, i have the other BMW too with same engine model (330i) and there is installed Hl Propan unit (KME clone) without inline hoses and this run without big problems. This means, that inline hoses are not necessary (Facts are terrible, ). BTW, on 330i with automatic tranny and HL Propan at this time is the LPG consuption same as on 325 with manyal and Prins (both ca 15l /100 km in the ci_ty). This is'nt normal. Is'nt difference, are the lambdas on Prins controller shwitsed on or not.

Edit. Today i installed MAP sensor and modifed the redycer as vacuum controlled. System canged to LPG_ref. But here arise problem because BMW has delta P const on gasoline injector instead Prins's, that make corrections of injection time depending of Psys (this is now variable). To solve problem i need shwits pressure correction off or make it depending delta P, not Psys, but is'nt possible. If You before said:"Prins and BMW are THE dream team!!!! :-)", unfortunately, I can't accept. At this point KME controller seems better, because KME controller make pressure correction depending delta P, not Psys. On Prins's diagnostic software v2.8 is possibility to fine tuning pressure corrections depending on Psys to eliminate Psys correction, , but it is really funny, so that i must be compensate factory errors. When I took up the corrections, then this BMW moved on LPG also as BMW.... Seems, like mode LPG_ref have SW error.

Edit 2. 6 mm fuel tubing, multivalve and filter-valve are'nt suitable also for 141kW engines, in future i must excange it to 8 mm. Please think about it, cold winter is coming and then the gas pressure drops.

 

With same software (S212s) work new Silverline and this is MAP controlled and have intake pressurre controlled reducer (vacuum control as standard). Also BMW original fuel system on this engine is intake pressurre controlled RealOEM.com BMW E46 330Ci Fuel filter, pressure regulator. This means, for good matching on slave mode GAS system must work on same principle as gasoline system (delta P=const or little falling depending from load). This is my little opinion and also the practice was confirmed this (KME work also in same principle and no tricks needed).

Calibration file UPLOAD.EE - Download MAP__M54_B25.cal. If You open it in calibration manager, see on Correction table pressure corrections, (Prins in my mind have software error on mode LPG_ref - this is yet long story). The MAP sensor is Bosch 0 261 230 004 0- 1 Bar, because is selected MAP 0- 1 Bar mode 2 and the pressure sensor is old Prins 0- 3,5 Bar (not new 0- 4 Bar). By these selections i become delta P=1,2 Bar at idle and little falling by full load (ca -0,2 Bar). By AFCO the delta P raises to 1,6 Bar, because AFCO= -15% to additional preventing idle oscillating.
Now:
-RC_inj =93%
-GAS_cor =10- 15% (dependig at load)
-Off_inj =50
Psys without vacuum =2.1 bar
Lamda =0 (off)

If i shwits between GAS and gasoline, then the idle and load injection times are the same, as needed. This BMW is now like BMW, , by acceleration at full throttle sounds like BMW and GAS consuption fell to 12l /100 km. No MIL ofcourse. No fault on car ECU. Today ca 400 km.

On new Silveriline documentation Prins is written, that at idle GAS Injection time must be not lower as 4 ms. In practice this is valid also on Keihin injectors to preventing "Rückeln" at idle. Without pressure controlled redycer and MAP sensor it is impossible to achieve.

Can someone give me Prins technical support email, i will try resolve software errors on LPG_ref mode?

 

Because the acquired car is owned by my wife I add her opinion on.
My wife´s commentary: After buying the engine worked raggedly, in idle gear (in traffic jam) often died off. After fine-tuning car is moving smoothly, goes like clockwork, no engine dying any more. This is not like the same car now.

 

My english is also poor, but i presented the facts and arguments. 1 argumet yet, whu Prins on Silverline become MAP as standart? I see, Prins VSI without MAP is as religion, and over which there is no dispute. But please do'nt forget, that this BMW have modulated fuel pressure as i before said. And this car i owned from Germany in condition, where the adjusting the gas aparattus is not affected by any criticism (please read again my wife opinion). I guess I will have higher demands, and i am crazy, beacause i installed MAP and modulated reducer on it.

 

Alles klar, danke für geschäftsmäßige Posten!!!