FYI Stern Garage EFI kit to replace LH-SFI

[jnes]

No aff.
Just found out that Stern Garage has EFI kit available for M119 engine. According to text, all systems (ABS,ASR, cruise etc.) should work normal with this kit Seems really interesting kit.

Has anyone pulled trigger yet and purchased or installed kit?

W124 M119 E500 E420 E400 EFI - Electronic Fuel Injection / Elektronisc

Bitte beachten Sie, die Lieferzeit beträgt ca. 6 Wochen! Wird nur für Sie bestellt Mit unserem EFi Kit bieten wir ihnen die Möglichkeit ihren M119 auf eine ruhende Zündanlage umzurüsten. Dadurch entfallen die Verteilerkappen und das leidige Thema mit zündaussetzter gehört der Vergangenheit...

stern-garage-shop.com

W124 M119 E500 E420 E400 EFI - Electronic Fuel Injection / Electronic injection system) including stationary ignition system.​

Normal price $3,525.00 USD

Please note that the delivery time is approx. 6 weeks!​

Ordered just for you

With our EFi Kit we offer you the opportunity to convert your M119 to a stationary ignition system. This eliminates the need for distributor caps and the annoying issue of misfiring is a thing of the past.

Through various conversions and customer reverence, we can guarantee you a reliable system.

Function:

• The system takes over the function of the injection and the ignition system.
• The distributor caps and the mass air flow sensor are no longer needed.
• The additional control unit communicates with the original control units via CAN bus.
• All functions are retained, as well as ASR cruise control, etc.
• All changes to the vehicle can be retrofitted and nothing needs to be damaged.
• With the Efi kit, various expansions are possible: conversion of a 5-G Tronic transmission or even manual transmission, compressor conversion, PWM fan control.
• The control unit is supplied with basic software.
• Only for LH-Jetronic
• Installation requires specialist knowledge

Scope of delivery:

• Trigger system including sensor for mounting on the front of the crankshaft
• Eight ignition coils
• Intake air and coolant temperature sensors
• Broadband lambda sensor LSU 4.9
• Freely programmable LPC 8 control unit including engine wiring harness
• Other fastening material

 

[skikrazey]

That looks very interesting! Seems like Stern Garage covered all the bases!

 

[jhodg5ck]

that's a deal.

 

[gsxr]

This is really interesting stuff - although, the ROI is questionable on a stock engine / stock transmission. Also, after seeing the SG electric fan setup, I'd like to see a lot more details on their EFI kit before forking over $4k.

Still, if they have sorted out how to supply the other factory modules with CAN data to retain factory ABS, ASR, and cruise functions - that is awesomesauce.

 

[doolar]

This is really interesting stuff - although, the ROI is questionable on a stock engine / stock transmission. Also, after seeing the SG electric fan setup, I'd like to see a lot more details on their EFI kit before forking over $4k.

Still, if they have sorted out how to supply the other factory modules with CAN data to retain factory ABS, ASR, and cruise functions - that is awesomesauce.

I would happily fork over the cash to eliminate the distributor caps alone, but not at €4000. I'm not saying it's too expensive, I have no idea on what it costs to produce one kit and what development costs needs to be covered. At €1500 I would start to consider it, given that it delivers all of the promises.

 

[MercEdi]

What’s also really cool about this is that the LPC 8 control unit communicates with the original Mercedes 722.6 EGS52 TCU. Which means you have the original torque control etc. which you don’t have with the OF Gear controller i believe?

He talks about it at 09:47 in the video above.

 

[Efraim]

Sure there are benefits in this EFI system. I wonder how do it actually works without air inlet measurement device? Is it like LH system running in backup mode when MAF is fault while it estimated the air and fuel indirectly? The air measurement is needed to have controlled combustion process to balance power, efficiency and emission.

 

[gsxr]

Sure there are benefits in this EFI system. I wonder how do it actually works without air inlet measurement device? Is it like LH system running in backup mode when MAF is fault while it estimated the air and fuel indirectly? The air measurement is needed to have controlled combustion process to balance power, efficiency and emission.

I was assuming there is an aftermarket MAF used, but I don't see one in the photo. That would be a drawback IMO... not sure how accurate mixture can be calibrated only using a wideband O2 sensor and RPM signals. Also would need to verify it retains the factory cam advance function, which I assume it does. And, I would hope this comes with an SG program already dialed in for the M119 5.0L, ready to drive... lots of questions here, not many answers.

 

[Markus-MD]

Looks more Alfa-N race ECU .Inlet Maifold Pressure and Angel of Throttelflap gives a good result.

 

[Alphasud40]

It’s a speed density based EFI system. Car manufacturers have used this style in the past but emissions requirements have phased this out for the most part. The most important thing is how well the software has been developed. Consider how much R&D Mercedes invested in creating a system that gave the customer good starts and warmup in any weather and altitude conditions. It’s tunable so there is a way to resolve issues in your climate if you have access to a good tuner and a rolling chassis or wheel dynamometer. One benefit of a MAP based system is vacuum leaks at idle won’t create a lean running condition but idle control will still be effected.

 

[thebrinksman]

Interesting. Who's gonna be the guinea pig? I'll make some popcorn.