JB4 is here!
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2018 W213 E 63 S AMG Sedan
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From: Earth
2018 C63S AMG
MBWorld Fanatic!
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2018 W213 E 63 S AMG Sedan
meaning 6psi over stock is too much on just 93 octane to run reliably, right?
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Joined: Mar 2019
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From: Earth
2018 C63S AMG
Possibly. I have no idea. I am considering hybrid turbos. That was one of the reasons I dynoed my car to get a baseline as wells as see what the JB4 is putting down.
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From: Simi Valley, California
2018 C63 Sedan
Former Vendor of MBWorld
Joined: Dec 2005
Posts: 827
Likes: 152
From: Simi Valley, California
2018 C63 Sedan
The power gains seem to be very similar between JB4 and flash tuning. The flash maps do have a small advantage in terms of what can be changed but with the JB4 the user can also make on the fly performant changes using the app, like when they want to add mix in E85 for some fun. And of course with flash tuning once flashed can never be fully removed so there is always a record left behind.
MBWorld Fanatic!
Joined: Jul 2014
Posts: 1,248
Likes: 197
2018 W213 E 63 S AMG Sedan
The power gains seem to be very similar between JB4 and flash tuning. The flash maps do have a small advantage in terms of what can be changed but with the JB4 the user can also make on the fly performant changes using the app, like when they want to add mix in E85 for some fun. And of course with flash tuning once flashed can never be fully removed so there is always a record left behind.
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MBWorld Fanatic!
Joined: Dec 2019
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From: Florida
AMG C63s
The power gains seem to be very similar between JB4 and flash tuning. The flash maps do have a small advantage in terms of what can be changed but with the JB4 the user can also make on the fly performant changes using the app, like when they want to add mix in E85 for some fun. And of course with flash tuning once flashed can never be fully removed so there is always a record left behind.
PS: But yeah, for the average user/driver the performance gains are very comparable between a good piggy back and a good tune.
Last edited by tobeit; Aug 3, 2020 at 12:09 PM.
Junior Member
Joined: Mar 2019
Posts: 48
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From: Earth
2018 C63S AMG
I tend to agree with you but still opted for the flash tune because of the reason you listed.. + just too much pain for me to remove piggy backs on our cars when going in for service and the on-the-fly tuning is great but I feel is something more for the pro's who know what they are doing when changing settings. I am kind of set and forget type of guy. The warranty issue is real...but at least its not as easy to detect as its used to be. I go into service this week and have it flashed back...also, people who tune probably have other performance mods the dealer could use to reject the warranty if it comes to that (independent if it caused the issue or not like DP's, intakes, BOV adapters....). I guess I am thinking simple - if I start doing any performance mods I need to accept the risk my warranty is void.
PS: But yeah, for the average user/driver the performance gains are very comparable between a good piggy back and a good tune.
PS: But yeah, for the average user/driver the performance gains are very comparable between a good piggy back and a good tune.
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Joined: Dec 2019
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From: Florida
AMG C63s
My car is still under warranty for another year or so and I take my car into the dealership for service and two warranty work so far (one for the aux fan on high all the time and the other for my AC switch stopped working) both covered under warranty with my JB4 strapped on, but unplugged from the ODBII port, no questions asked. Several recalls have been performed on the car with dealer re-flash as well under warranty. It all depends on your SA and dealer. When I had my N55 BMW with Pure Stage 2 turbos and full bolt on + JB4, I still took my car to dealer for warranty work. I had a cool SA though. He says just let me know if you have a tune so I tell tech's not to flash your car when you bring it in for service. If you flash your car back to stock before a dealer visit for warranty work, Mercedes can tell if your ECU has been tampered with "if" they go looking, period! I confirmed this with the service manager at my dealer last week after sharing with him my plans for my car.
Junior Member
Joined: Mar 2019
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From: Earth
2018 C63S AMG
I agree. It was hot as hell and the shop had no fan blowing at the intake snorkels just one giant fan blowing cool air to the engine bay. Curios as to what it will display on a dynojet so at least it would be the same measuring tool used by others.
Super Member
Joined: Nov 2016
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From: South Fl
EQE 350+, EQS 450+, AMG C63
so I got my JB4 a couple of weeks back and was waiting for the BMS intake to come in (perpetual back order LOL) so I could do it all in one shot. I do seem to have a couple of challenges after the install
1- when I connect the JB to the ODBI port and start the car I get a message that says "Mercedes Me has limited operations" I remove it and I dont get the message
2- I opted for the Bluetooth option and after purchasing the app (funny thing this is not my first JB but it is my first BT) it installed and when I try to create a log in account nothing happens... registering flashes real fast and nothing.
Anybody have any ideas?
1- when I connect the JB to the ODBI port and start the car I get a message that says "Mercedes Me has limited operations" I remove it and I dont get the message
2- I opted for the Bluetooth option and after purchasing the app (funny thing this is not my first JB but it is my first BT) it installed and when I try to create a log in account nothing happens... registering flashes real fast and nothing.
Anybody have any ideas?
Super Member
Joined: Nov 2016
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From: South Fl
EQE 350+, EQS 450+, AMG C63
well I figured out the issue with the app with no help from BMS
They also have a firmware update that is suppose to fix the Mercedes Me Limited Service message which I applied but it did not work. Trying to get support from BMS is like pulling teeth.
I also received their intake and I guess I should not have been surprised but it was missing the standoff and the two blots for the heat shield. Contacted them and once again lack luster support... I had to make my own stand off and source some spare bolts...
They also have a firmware update that is suppose to fix the Mercedes Me Limited Service message which I applied but it did not work. Trying to get support from BMS is like pulling teeth.
I also received their intake and I guess I should not have been surprised but it was missing the standoff and the two blots for the heat shield. Contacted them and once again lack luster support... I had to make my own stand off and source some spare bolts...
