gabemcclintock

Was running some 0-60's the other night (waiting to pick up daughter from gym. LOL) Brake boost to build boost, let off brake and go...car "launches" and seconds later it pretty much dies, felt like 100% engine power loss. Circled back, switched to Map 1 to try again and no issues (at least it didn't feel there were any)

2019 C43 sedan. JB4 + BCM

Posting .csv and graph here for any insight.



Map 2 - power loss:




Map 1:

MatthewJ

From the graph it looks like the peddle was lifted. If you indeed had it pegged to the floor on the full run then maybe look at:
1. if you have a peddle commander that has a loose connection
2. need to reset your throttle
3.have a faulty peddle signal to ECU
If you switch back to map 2 does it happen again?

gabemcclintock

felt like that but I can assure you timing 0-60 times and lifting my foot off within seconds don’t tend to equate to fast acceleration

Haven’t switched back to Map 2 and tried since as was coming concerned about possible damage.

////AMG_C43

Were you in manual mode or automatic? If manual, you may have hit that earlier rev limiter people refer to while in first gear.

gabemcclintock

Automatic

AMc450amg

HEY Y'ALL,
I actually just experienced the same thing on map 2 while making some 1/4 mile runs at the track. It was my very first run when I arrived.
2k brake boosted launch and lost all boost . And i mean All boost zero, zip, nada...... after parking it and scratching my head a bit I went to map 1 and had no boost issues. After a couple runs on map 1 I went back to map 2 and everything worked fine.
So , I can't say for sure what happened , but after several runs I never experienced that again.