w212 boost spike
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Newbie
Joined: Feb 2024
Posts: 2
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2016 Mercedes Benz e63s
w212 boost spike
i have a 2016 e63s with almost 130k miles and recently went stage 2 tune and trans tune, shortly after i noticed i was losing boost between shifts my tuner looked back at my car log and notice there was a spike in boost so we tryed a diffrent stage 2 tune then he flashed my car back to stock and the same issue occured
im curious what is causing this issue
i will attach my stock log and my tune logs for a better diag
https://www.autotuner.cloud/log/c75b...f9a707085e7d11
https://www.autotuner.cloud/log/3ac0...ff8c5743b0022d
https://www.autotuner.cloud/log/e414...bd6ffee7970124
im curious what is causing this issue
i will attach my stock log and my tune logs for a better diag
https://www.autotuner.cloud/log/c75b...f9a707085e7d11
https://www.autotuner.cloud/log/3ac0...ff8c5743b0022d
https://www.autotuner.cloud/log/e414...bd6ffee7970124
Out Of Control!!
Joined: Apr 2019
Posts: 11,923
Likes: 6,776
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
tuned boost spikes
Your turbo boost logs issue may ring a bell with @S-Prihadi
It could be the tune firmware reacting to an engine issue. You've got a lot of live data
Sorting out what part of that combination is tune vs. stock is not simple... Being back to vanilla-stock helps sort things out before tuning again.
It could be the tune firmware reacting to an engine issue. You've got a lot of live data
Sorting out what part of that combination is tune vs. stock is not simple... Being back to vanilla-stock helps sort things out before tuning again.
Last edited by CaliBenzDriver; May 7, 2026 at 12:08 AM.
Out Of Control!!
Joined: Apr 2019
Posts: 11,923
Likes: 6,776
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
Live data logs
i have a 2016 e63s with almost 130k miles and recently went stage 2 tune and trans tune, shortly after i noticed i was losing boost between shifts my tuner looked back at my car log and notice there was a spike in boost so we tryed a diffrent stage 2 tune then he flashed my car back to stock and the same issue occured
im curious what is causing this issue
i will attach my stock log and my tune logs for a better diag
https://www.autotuner.cloud/log/c75b...f9a707085e7d11
https://www.autotuner.cloud/log/3ac0...ff8c5743b0022d
https://www.autotuner.cloud/log/e414...bd6ffee7970124
im curious what is causing this issue
i will attach my stock log and my tune logs for a better diag
https://www.autotuner.cloud/log/c75b...f9a707085e7d11
https://www.autotuner.cloud/log/3ac0...ff8c5743b0022d
https://www.autotuner.cloud/log/e414...bd6ffee7970124
Let's start one level below street logs with your maintenance items and some engine data.
You are most familiar with your logs... feel free to point out the obvious.
##### From live logs...
- 1- Your fuel delivery does looks right
- 2 - Do look more closely at camshaft actuations
Focus on Intake: 1 vs. 2 vs. Rpm.... ??
Anything else ?
Last edited by CaliBenzDriver; May 7, 2026 at 05:52 PM.
