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-   -   M550i LCI - Log request (https://www.n54tech.com/forums/showthread.php?t=65086)

Boosted_8 04-19-2021 11:22 AM

M550i LCI - Log request
 
Hello there.
Long story short: A few 2021 M550i owners have started to notice the 1st and 2nd gear pull is lower than expected with the 0-60 times slower than the previous pre-LCI model. Full power comes in from 3rd and above. If any 2021 model year owners are running a JB4 it would be interesting to see :-

a) If you can hit the manufacturer claimed 3.6-3.8 second 0-60 times
b) If the Jb4 log from such event shows the actual boost in each gear, the throttle plate position and the wastegate duty.

Massive thanks for anyone that has this data they can share!

Boosted_8 04-19-2021 01:16 PM

2 Attachment(s)
Attached is my data post run in period. The 0-30 is really terrible. It's not all bad news as the 100-200kmph data is impressive, the 600bhp Audi RS6 does this in 8.7-8.8 and the f90 M5 (non comp) in 7.7 seconds for perspective

Boosted_8 04-21-2021 04:45 AM

Sport plus, gear selector in m/s and one tap on traction. Both feet hard on the pedals, click the kick down button. Chequered flag shows on dash. Release the brake.

DCFS222! 04-21-2021 08:04 AM

Quote:

Originally Posted by Boosted_8 (Post )
Sport plus, gear selector in m/s and one tap on traction. Both feet hard on the pedals, click the kick down button. Chequered flag shows on dash. Release the brake.

Sorry if this is a stupid question, but what is "click the kick down button"?

DCFS222! 04-21-2021 09:57 AM

Quote:

Originally Posted by Boosted_8 (Post )
Hello there.
Long story short: A few 2021 M550i owners have started to notice the 1st and 2nd gear pull is lower than expected with the 0-60 times slower than the previous pre-LCI model. Full power comes in from 3rd and above. If any 2021 model year owners are running a JB4 it would be interesting to see :-

a) If you can hit the manufacturer claimed 3.6-3.8 second 0-60 times
b) If the Jb4 log from such event shows the actual boost in each gear, the throttle plate position and the wastegate duty.

Massive thanks for anyone that has this data they can share!

I have a JB4 that I can take logs. But I have ******* *********. So the numbers would be skewed.

Boosted_8 04-21-2021 10:13 AM

Quote:

Originally Posted by DCFS222! (Post )
Sorry if this is a stupid question, but what is "click the kick down button"?

Push the gas pedal till you hit resistance, push a little bit harder again and you will feel the kick down trigger.

DCFS222! 04-21-2021 10:40 AM

Quote:

Originally Posted by Boosted_8 (Post )
Push the gas pedal till you hit resistance, push a little bit harder again and you will feel the kick down trigger.


Okay gotcha. I thought I read that it's better to launch an automatic, You suggest manually up shifting.

Boosted_8 04-21-2021 10:56 AM

Quote:

Originally Posted by DCFS222! (Post )
Okay gotcha. I thought I read that it's better to launch an automatic, You suggest manually up shifting.

M/S leaves you in sport auto until you pull a paddle. I would leave it there personally.

DCFS222! 04-21-2021 11:00 AM

Quote:

Originally Posted by Boosted_8 (Post )
M/S leaves you in sport auto until you pull a paddle. I would leave it there personally.

Now it makes a little bit more sense to me. M1 would be manually upshifting but if it says S1, it'll upshift itself I believe is what you're saying?

Boosted_8 04-21-2021 11:11 AM

Quote:

Originally Posted by DCFS222! (Post )
Now it makes a little bit more sense to me. M1 would be manually upshifting but if it says S1, it'll upshift itself I believe is what you're saying?

Ja, Das ist richtig

Boosted_8 04-24-2021 04:43 AM

I smell a class action... t=1799884https://g30.bimmerpost.com/forums/sh....php?t=1799884

Boosted_8 05-07-2021 07:06 AM

My Jb4 has arrived. Shame there are no fitting instructions for the new V8...

Boosted_8 05-24-2021 03:00 AM

So to confirm - Is it safe to run map 2 (94 gas here) without the EWG connectors as it seems like they wont fit the current cars? (Disappointment strike 2)

phaser 05-24-2021 06:28 AM

Quote:

Originally Posted by Boosted_8 (Post )
So to confirm - Is it safe to run map 2 (94 gas here) without the EWG connectors as it seems like they wont fit the current cars? (Disappointment strike 2)

Possibly the question is whether it would be safe to run the EWG connections even if the adapters were available to make the interface. Is there firmware etc. needed for this next level. I understand that in other applications this EWG control via JB4 makes a big difference. Looking forward to this ability.

Boosted_8 06-05-2021 03:48 PM

One last question. I'm not spotting an obvious way through for the ODB2 cables. Now this may be due to the fact I have a right hand drive car and all the suggestions I'm reading are about left hand drive cars routing cables. So has anyone in Australia, South Africa or Japan got any tips haha

Boosted_8 06-11-2021 12:58 AM

1 Attachment(s)
Well I got there. I would say installing a JB4 is not for a total novice with limited commitment... Here's the map one log from last night. Should I be asking Burger to validate it?

Steve @ BMS/Fuel-It! 06-11-2021 11:06 AM

Log looks pretty clean and boost is on target...I'd say you got there. ;)

Boosted_8 06-14-2021 11:06 AM

Last problem it seems -> The auto error code delete doesn't seem to be working. I'm running without OPF filters. I can delete the codes with Bimmerlink just fine but JB4 doesn't seem to do it? I have enabled it via the WMI options bit:6?

zse8h 07-16-2021 11:21 AM

Boosted

did you fix deleting codes with JB4?

Boosted_8 07-19-2021 03:00 AM

Actually not - I think a formal support ticket to BMS must be the next step?

Steve @ BMS/Fuel-It! 07-19-2021 12:11 PM

Auto delete will not work regardless on a platform this new. :( You have to go in to diagnostics mode and then delete the code manually.

Boosted_8 07-19-2021 02:42 PM

I'm not going to lie. I'm struggling to be pleased with this purchase.

zse8h 07-19-2021 09:38 PM

Yup - I could not get the JB4 to delete code until the car was stopped and in diagnosis mode. To do this hit the stop/start 3 times fast and this will place the car into diagnosis mode.

To your point this product was a money grab when it comes to this car. No real development has been done. Why would I receive a harness with EWG connections when clearly this has not been sorted out? The user interface still says F chassis and to me it I feel no real thought was placed into this for the G chassis.

I should have gone with racechip. Would have received a guaranteed 60hp and those guys spent weeks designing and testing a solution for this car.


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