W209 CLK55-K maf voltage clamp help
Thread Starter
Junior Member
Joined: May 2017
Posts: 70
Likes: 9
From: Georgia
W211 E55 amd W209 CLK55-kleemann
W209 CLK55-K maf voltage clamp help
So, I'm running a Kleemann v2 Blower kit on my 2005 CLK55. With inline booster fuel pump set up. I'm keep getting fuel cut at random partial and wot sometime (kinda like hitting a wall effect). Purchased Split Second voltage clamp and set the high clamp at 4.89v and low clamp at .003v, question is on the maf wiring, 4 wire total. I measure it with a volt meter with key on engine off, and they as follow: 12v wire, ground wire, signal wire and a 5v wire. So the voltage clamp Red wire connect to the 12v, black wire to the ground, now for the blue and blue/white wire connect to the signal or 5v wire on the maf sensor? I wire it onto the signal wire and I still got the same problem, then wire it to the 5v wire and it does fine for about 2 weeks now same problem again!!!! It's getting frustrating!!! Anyone using maf clamp on their NA m113 Blower set up, please pitch in. Thank you...
MBWorld Fanatic!
Joined: May 2008
Posts: 1,250
Likes: 21
From: Los Angeles, CA
Supercharged CLK500,ML500,S580
I didn't install my Kleemann Kit myself, but I do remember Cory saying that they tapped the wires inside the fuse box in the engine compartment. Reviewing the install manual (attached to this response), it says:
Kleemann Air Mass resistor
(Air mass resistor is only needed on 5 speed gearbox or without EMS.)
Locate the yellow/white air mass lead and cut the wire. Then install the Kleemann resistor
between the wires. Doesn’t matter which lead goes where. When measuring, the voltage must
not exceed 4,85 volts when driving full throttle all the way to the gearshift. Exceeding 4,85 volts
could result in engine damage. Always measure on the wire going towards the ECU (after
Kleemann resistor).( Only 5 speed gearbox or without EMS.)
So it looks like you set your voltage clamp too high (4.89 vs 4.85) and since you are trying to clamp voltage below 5V, I believe the 5V line is the appropriate line to tap (if the wire is yellow/white, then it aligns with the Kleemann instructions above).
I always reach out to Cory with questions like this, you might want to send him an email too.
Good luck and let us know how it goes!
Kleemann Air Mass resistor
(Air mass resistor is only needed on 5 speed gearbox or without EMS.)
Locate the yellow/white air mass lead and cut the wire. Then install the Kleemann resistor
between the wires. Doesn’t matter which lead goes where. When measuring, the voltage must
not exceed 4,85 volts when driving full throttle all the way to the gearshift. Exceeding 4,85 volts
could result in engine damage. Always measure on the wire going towards the ECU (after
Kleemann resistor).( Only 5 speed gearbox or without EMS.)
So it looks like you set your voltage clamp too high (4.89 vs 4.85) and since you are trying to clamp voltage below 5V, I believe the 5V line is the appropriate line to tap (if the wire is yellow/white, then it aligns with the Kleemann instructions above).
I always reach out to Cory with questions like this, you might want to send him an email too.
Good luck and let us know how it goes!
Thread Starter
Junior Member
Joined: May 2017
Posts: 70
Likes: 9
From: Georgia
W211 E55 amd W209 CLK55-kleemann
Originally Posted by 2MCHCAR
I didn't install my Kleemann Kit myself, but I do remember Cory saying that they tapped the wires inside the fuse box in the engine compartment. Reviewing the install manual (attached to this response), it says:
Kleemann Air Mass resistor
(Air mass resistor is only needed on 5 speed gearbox or without EMS.)
Locate the yellow/white air mass lead and cut the wire. Then install the Kleemann resistor
between the wires. DoesnÂ’t matter which lead goes where. When measuring, the voltage must
not exceed 4,85 volts when driving full throttle all the way to the gearshift. Exceeding 4,85 volts
could result in engine damage. Always measure on the wire going towards the ECU (after
Kleemann resistor).( Only 5 speed gearbox or without EMS.)
So it looks like you set your voltage clamp too high (4.89 vs 4.85) and since you are trying to clamp voltage below 5V, I believe the 5V line is the appropriate line to tap (if the wire is yellow/white, then it aligns with the Kleemann instructions above).
I always reach out to Cory with questions like this, you might want to send him an email too.
Good luck and let us know how it goes!
Kleemann Air Mass resistor
(Air mass resistor is only needed on 5 speed gearbox or without EMS.)
Locate the yellow/white air mass lead and cut the wire. Then install the Kleemann resistor
between the wires. DoesnÂ’t matter which lead goes where. When measuring, the voltage must
not exceed 4,85 volts when driving full throttle all the way to the gearshift. Exceeding 4,85 volts
could result in engine damage. Always measure on the wire going towards the ECU (after
Kleemann resistor).( Only 5 speed gearbox or without EMS.)
So it looks like you set your voltage clamp too high (4.89 vs 4.85) and since you are trying to clamp voltage below 5V, I believe the 5V line is the appropriate line to tap (if the wire is yellow/white, then it aligns with the Kleemann instructions above).
I always reach out to Cory with questions like this, you might want to send him an email too.
Good luck and let us know how it goes!
MBWorld Fanatic!
Joined: May 2008
Posts: 1,250
Likes: 21
From: Los Angeles, CA
Supercharged CLK500,ML500,S580
Yes, I have a Kleemann ECU tune and a Eurocharged TCU tune; this was done separately and at a additional cost. In addition to the optimization for the Supercharger (Air/Fuel, Torque Settings), I also wanted to switch off the downstream O2 since I'm running MBH Headers. In my opinion, you should get at least the ECU Tune.
Thread Starter
Junior Member
Joined: May 2017
Posts: 70
Likes: 9
From: Georgia
W211 E55 amd W209 CLK55-kleemann
Hmmm... that's interesting, they didn't have to dyno tune the ecu with the blower on the vehicle. How can that be accurate? But I've heard a lot of kleemann user do that and it work great... if deleting the downstream o2 in the tune, will that effect emission testing? My next step is kleemann header the the ecu...
Trending Topics
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Thread Starter
Junior Member
Joined: May 2017
Posts: 70
Likes: 9
From: Georgia
W211 E55 amd W209 CLK55-kleemann
Originally Posted by 2MCHCAR
Yes, I have a Kleemann ECU tune and a Eurocharged TCU tune; this was done separately and at a additional cost. In addition to the optimization for the Supercharger (Air/Fuel, Torque Settings), I also wanted to switch off the downstream O2 since I'm running MBH Headers. In my opinion, you should get at least the ECU Tune.
MBWorld Fanatic!
Joined: Oct 2012
Posts: 1,427
Likes: 100
From: Florida
2002 CLK 55 AMG cabriolet Eurocharged
Hi Chris
You guys are running a kleeman blower. I am using an AMG W211 Blower.
The AMG blower is a bit different. It has a bypass valve to control boost.
My MAF circuit is for an enable. I will use a pressure transducer for bp valve control.
Still setting up the hardware I/O.
Once the install is completed I will likely construct a custom fresh air intake pipe for installation of the secondary MAF.
Once the bench testing is completed I will start a thread on it for others to clone if desired,
FUN, FUN, FUN
Best, Gator
You guys are running a kleeman blower. I am using an AMG W211 Blower.
The AMG blower is a bit different. It has a bypass valve to control boost.
My MAF circuit is for an enable. I will use a pressure transducer for bp valve control.
Still setting up the hardware I/O.
Once the install is completed I will likely construct a custom fresh air intake pipe for installation of the secondary MAF.
Once the bench testing is completed I will start a thread on it for others to clone if desired,
FUN, FUN, FUN
Best, Gator
Thread Starter
Junior Member
Joined: May 2017
Posts: 70
Likes: 9
From: Georgia
W211 E55 amd W209 CLK55-kleemann
Originally Posted by GatorMB
Hi Chris
You guys are running a kleeman blower. I am using an AMG W211 Blower.
The AMG blower is a bit different. It has a bypass valve to control boost.
My MAF circuit is for an enable. I will use a pressure transducer for bp valve control.
Still setting up the hardware I/O.
Once the install is completed I will likely construct a custom fresh air intake pipe for installation of the secondary MAF.
Once the bench testing is completed I will start a thread on it for others to clone if desired,
FUN, FUN, FUN
Best, Gator
You guys are running a kleeman blower. I am using an AMG W211 Blower.
The AMG blower is a bit different. It has a bypass valve to control boost.
My MAF circuit is for an enable. I will use a pressure transducer for bp valve control.
Still setting up the hardware I/O.
Once the install is completed I will likely construct a custom fresh air intake pipe for installation of the secondary MAF.
Once the bench testing is completed I will start a thread on it for others to clone if desired,
FUN, FUN, FUN
Best, Gator
Senior Member
Joined: Feb 2017
Posts: 384
Likes: 41
From: West Palm Beach, FL
'99 C43, '88 560SL
Hi Chris
You guys are running a kleeman blower. I am using an AMG W211 Blower.
The AMG blower is a bit different. It has a bypass valve to control boost.
My MAF circuit is for an enable. I will use a pressure transducer for bp valve control.
Still setting up the hardware I/O.
Once the install is completed I will likely construct a custom fresh air intake pipe for installation of the secondary MAF.
Once the bench testing is completed I will start a thread on it for others to clone if desired,
FUN, FUN, FUN
Best, Gator
You guys are running a kleeman blower. I am using an AMG W211 Blower.
The AMG blower is a bit different. It has a bypass valve to control boost.
My MAF circuit is for an enable. I will use a pressure transducer for bp valve control.
Still setting up the hardware I/O.
Once the install is completed I will likely construct a custom fresh air intake pipe for installation of the secondary MAF.
Once the bench testing is completed I will start a thread on it for others to clone if desired,
FUN, FUN, FUN
Best, Gator
MBWorld Fanatic!
Joined: Oct 2012
Posts: 1,427
Likes: 100
From: Florida
2002 CLK 55 AMG cabriolet Eurocharged
W211 AMG supercharger
Hi Brad,
No thread hijacking here but I did not write the thread yet. I have written a quick control sequence of operation though and should start compiling soon.
Base BP valve positioning then modulation based on tune. No rushing into boosting a compression engine on pump gas. KISS
I did do a thread on the engine prep and its plum ready for abuse. (Timing Chain Fun)
Car is stuck on jack stands right now as the steering and suspension needed some attention. Missing todays Autocross as well.
You should see a technical post from me for the electronics soon after the holidays.
Best, Gator
No thread hijacking here but I did not write the thread yet. I have written a quick control sequence of operation though and should start compiling soon.
Base BP valve positioning then modulation based on tune. No rushing into boosting a compression engine on pump gas. KISS
I did do a thread on the engine prep and its plum ready for abuse. (Timing Chain Fun)
Car is stuck on jack stands right now as the steering and suspension needed some attention. Missing todays Autocross as well.
You should see a technical post from me for the electronics soon after the holidays.
Best, Gator
