The best step you made in diagnosing the problem is admitting you could have made a mistake. One mistake people often make is saying “it can’t do that or that’s impossible”. You stated you have experienced weird or strange circumstances. An open mind leads to endless possibilities(and solutions).Pretty sure someone said that.
If it's a Bosch ECU it's torque based and there are a bunch of tables determining the torque output. If there is a driver demand torque tables try adding 20 to the top row and see if that helps. Also add more torque in the areas that pertain to allowed engine torque. Then go check duty cycle on the wastegate solenoid. It is commanding your boost. So the first thing is driver demand. Aka pedal. Then the lookup for how much power it's allowed. Then it will look in the virtual torque tables and see how much boost and or throttle angle to give you. This happens every millisecond.
Yea. That’s the go to. Once we rectified the boost issues with the wastegate nothing changed in 9 files and 40 dyno runs. Tuner and the turbo manufacturer agree that the wastegates ate most likely being pushed open.
What is wastegate duty cycle doing during runs. Is it 100 percent? If so then yes it's pushing them open. If not then it is tune related. Or hard limits in the ECU you don't have access to tables. @@FluidMotorUnion
Was looking forward to this Mercedes update. Thanks for bringing it back en educate us! Also good to see the channel is growing slowly but sure! Its great content OJ! Have a great Christmas everyone 🌲⛄❄️
12:12 "26 or 27 psi before it stopped moving, I don't know if the car is set to that". The car isn't running, do you know how a boost control solenoid even works? If it's not activated (duty cycle) those turbos should be opening at base (wastegate) pressure. You are correct, however, that they should be set to the same pressure. I would check that the wastegate flaps are fully seated and sealed when not actuated.
Edit: watched further and because the nuts had fallen off they were flapping in the wind, so basically wide open, no wonder it wasn't making boost. I would simply find the base pressure spec and set both of them to that through trial and error by testing.
Plugs gapped correctly for increased boost ? You probably know this but tuning many times leads to ignition issues on these cars. My sl600 fried every ignition component shortly after tuning A fusable transformer might be a good investment
First thing I would do is unhook boost lines from the wastegates, and try to make a low rpm pull u till turbos start to cook, if I get my wastegates open at cetrain(lower boost than I want) I'd search for new wastegate valves which have higher rated spring. Your EMAP basically controlling safety aspect of opening the wastegate.
Verify that the waste gate solenoid is holding boost or vacuum, unplugged it shouldn’t allow anything through, my guess is that its partially open and working off manifold pressure. What it should be doing is staying closed untill requested boost is achieved thwn opening. As far as setting wastegate pressure is known on the b5s4 most tuners are telling guys to set it at 9psi and they take care of the rest (up to 20PSI+) with the WG solenoid and there are lots of amateur mechanics setting up wastegate pressure on their own. If you want someone to talk to i’d ask Tunezilla or Blake Beadie at ETS Spec about your turbo issues, you probably don’t need to pull the engine again if you can adjust the waste gates and pressurize them in car.
I dont trust the gauges sometimes. I would put a boost gauge sensor before the intake somewhere. See if it reads correctly. Eliminate that issue Wastegate problem I would for sure check the oem one outside and simulate putting more boost in it than its designed to do! If its giving you issues theres the issue. I Also would like to know what size turbines are they ? Maybe the exhaust is getting restricted by a not so big of a turbine wheel that its choking the engine up top! Biggest thing I realized when I put a bigger turbine wheel on my car is that the power was coming a little later but the boost was staying almost all the way up top!
Sounds like you need external wastegates which would be difficult and require more fabrication in tight confines. I hope not. When you get it corrected I'd love to see Alex's cl65 amg reach it's full potential as well!
I’m not really great with turbos but could it be a possibility that maybe the turbo is defective. Not doing its full potential? Idk if what I’m saying sounds stupid but maybe there’s something with the turbo itself
Thanks for sharing such valuable information! Could you help me with something unrelated: I have a SafePal wallet with USDT, and I have the seed phrase. (alarm fetch churn bridge exercise tape speak race clerk couch crater letter). Could you explain how to move them to Binance?
The best step you made in diagnosing the problem is admitting you could have made a mistake. One mistake people often make is saying “it can’t do that or that’s impossible”. You stated you have experienced weird or strange circumstances. An open mind leads to endless possibilities(and solutions).Pretty sure someone said that.
This was the video I was looking for from you guys! Awesome. More of this!
LS swapping an rx8 from my wheelchair mostly by myself would be my biggest challenge so far.
If it's a Bosch ECU it's torque based and there are a bunch of tables determining the torque output. If there is a driver demand torque tables try adding 20 to the top row and see if that helps. Also add more torque in the areas that pertain to allowed engine torque. Then go check duty cycle on the wastegate solenoid. It is commanding your boost. So the first thing is driver demand. Aka pedal. Then the lookup for how much power it's allowed. Then it will look in the virtual torque tables and see how much boost and or throttle angle to give you. This happens every millisecond.
I hope they know that! Torque on these cars doesnt get unleashed until 3 or 4th gear, If I remember correctly first gear gets 500nm
Yea. That’s the go to. Once we rectified the boost issues with the wastegate nothing changed in 9 files and 40 dyno runs. Tuner and the turbo manufacturer agree that the wastegates ate most likely being pushed open.
What is wastegate duty cycle doing during runs. Is it 100 percent? If so then yes it's pushing them open. If not then it is tune related. Or hard limits in the ECU you don't have access to tables. @@FluidMotorUnion
Hope you guys figure this out. As a cl65 owner you'll have a future customer once I see these hurdles cleared 👍🏿
Man, the long road to getting these turbos right sounds......
exhausting
@ 14:00😂
Was looking forward to this Mercedes update. Thanks for bringing it back en educate us!
Also good to see the channel is growing slowly but sure! Its great content OJ! Have a great Christmas everyone 🌲⛄❄️
What a project! Keep up the good work 👍
Great series, can't wait to see the resolution.
Cut!!!!!
This sounds familiar… Alex was having issues with this engine in his whip…
12:12 "26 or 27 psi before it stopped moving, I don't know if the car is set to that".
The car isn't running, do you know how a boost control solenoid even works? If it's not activated (duty cycle) those turbos should be opening at base (wastegate) pressure. You are correct, however, that they should be set to the same pressure. I would check that the wastegate flaps are fully seated and sealed when not actuated.
Edit: watched further and because the nuts had fallen off they were flapping in the wind, so basically wide open, no wonder it wasn't making boost. I would simply find the base pressure spec and set both of them to that through trial and error by testing.
Good explaining. Hope for a solution!
“Damnit Grandma”
Plugs gapped correctly for increased boost ? You probably know this but tuning many times leads to ignition issues on these cars. My sl600 fried every ignition component shortly after tuning A fusable transformer might be a good investment
It’s not cutting. Smooth power delivery, Just not hitting target boost. Plugs were gapped to .028 when we first did the turbos.
Love it!
i look forward to seeing the next video on how this plays out
First thing I would do is unhook boost lines from the wastegates, and try to make a low rpm pull u till turbos start to cook, if I get my wastegates open at cetrain(lower boost than I want) I'd search for new wastegate valves which have higher rated spring.
Your EMAP basically controlling safety aspect of opening the wastegate.
Verify that the waste gate solenoid is holding boost or vacuum, unplugged it shouldn’t allow anything through, my guess is that its partially open and working off manifold pressure. What it should be doing is staying closed untill requested boost is achieved thwn opening.
As far as setting wastegate pressure is known on the b5s4 most tuners are telling guys to set it at 9psi and they take care of the rest (up to 20PSI+) with the WG solenoid and there are lots of amateur mechanics setting up wastegate pressure on their own. If you want someone to talk to i’d ask Tunezilla or Blake Beadie at ETS Spec about your turbo issues, you probably don’t need to pull the engine again if you can adjust the waste gates and pressurize them in car.
Is the ECU mapping on par?
The company said tying them can turns to get 15 PSI do another 10 trance and maybe you get 20 psi before you take them out it's worth a try.
This video covers 3 of those adjustments. 2 of those produced no increase past 15
@FluidMotorUnion yeah change the wastegate. Get turbosmart 👍👍👍
I dont trust the gauges sometimes. I would put a boost gauge sensor before the intake somewhere. See if it reads correctly. Eliminate that issue
Wastegate problem I would for sure check the oem one outside and simulate putting more boost in it than its designed to do! If its giving you issues theres the issue. I Also would like to know what size turbines are they ? Maybe the exhaust is getting restricted by a not so big of a turbine wheel that its choking the engine up top! Biggest thing I realized when I put a bigger turbine wheel on my car is that the power was coming a little later but the boost was staying almost all the way up top!
Is the trans tuned or converter upgraded? If there is too much slip it will pull timing/boost
How about opening the wastegates and putting thougher springs in?
Sounds like you need external wastegates which would be difficult and require more fabrication in tight confines. I hope not. When you get it corrected I'd love to see Alex's cl65 amg reach it's full potential as well!
Always enjoy you video 👍🏻👍🏻👍🏻🇬🇧
I’m not really great with turbos but could it be a possibility that maybe the turbo is defective. Not doing its full potential? Idk if what I’m saying sounds stupid but maybe there’s something with the turbo itself
Sounds like she’s just a factory turtle you might want to look at internals that wear without noise
Seems like V12s are mad troublesome. I don't get it. Are there any restrictions anywhere?
What's the ECU? I assume a Bosch MEx?
The biggest hurdle in building my own cars is being POOR!!!!!!
Being poor can create a hurdle to putting food on the table.
Hope you figure it out!
What about weistech engineering asv
whatcha doin' with that Elise??
Pull 5* and weld the wastegates shut
Algorithm comment 💪
Is this a kids show!?
Oh hey there Windows 7! 😅
Hi.
Thanks for sharing such valuable information! Could you help me with something unrelated: I have a SafePal wallet with USDT, and I have the seed phrase. (alarm fetch churn bridge exercise tape speak race clerk couch crater letter). Could you explain how to move them to Binance?
Bro, you're too afraid to touch the wastegate 😂. You call yourself a mechanic shop? Stick to bodybuilding.
You get that way after you drop the engine a second time on the shops dime to adjust a w12 Bentley…
I know what's wrong with it. OJ parked it near Alex from LSC'S v12 turbo Mercedes, and now it's got v12 cooties 🤦🏼♂️🤣
@WeistecTV