E43 Tune/ performance mods
With the year end sale, the $/hp is very competitive.
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We hope everyone is enjoying their holiday weekend!
With the year end sale, the $/hp is very competitive.
$800 - M276 43AMG, 400 & 450 V6 Bi-Turbo - Stage 1 & Stage 2

overall quite happy with the combo. It feels lot faster but on top end not as dramatic a change as when had my SL 63 tuned. Good amount more torque but the HP isn’t as big a deal. Overall though it rips 0-60 now. Would bet it’s in high 3 second range.
The Best of Mercedes & AMG




From what I understand, the M276 DE 30 LA variants' power increases were not achieved by software tuning alone.
The 329hp variant was released first, so it's not de-tuned from anything.
The 362hp variant has a lower compression ratio and increased boost from the 329hp variant.
The 396hp(US)/401hp(EU) variant has larger capacity turbos and increased boost from the 362hp variant.
There may be more differences between the variants I'm not aware of also, but since this thread is about the E43, they all had the same engine specs (2017-2018 396hp/401hp).
From what I understand, the M276 DE 30 LA variants' power increases were not achieved by software tuning alone.
The 329hp variant was released first, so it's not de-tuned from anything.
The 362hp variant has a lower compression ratio and increased boost from the 329hp variant.
The 396hp(US)/401hp(EU) variant has larger capacity turbos and increased boost from the 362hp variant.
There may be more differences between the variants I'm not aware of also, but since this thread is about the E43, they all had the same engine specs (2017-2018 396hp/401hp).
Hello good afternoon,
I was once told that the engine from the c43 to the e43 had different internals. As well as the pistons that would be forged. But I'm not sure.
overall quite happy with the combo. It feels lot faster but on top end not as dramatic a change as when had my SL 63 tuned. Good amount more torque but the HP isn’t as big a deal. Overall though it rips 0-60 now. Would bet it’s in high 3 second range.
I have the same problem, at low speed there is no noise. It looks like a normal version like the c200.
a tune will add close to 100 hp if the car is turbo charged. One pound of boost is equal to about 14 hp. The tune will raise your boost by 10 psi on average. And no don’t need to upgrade the turbos ,that is the average for almost any turbo car. My 2001 Audi s4 went from 250 hp to 320 with just a tune I flashed onto it. Tune I found over the internet.
lots of bad info on these posts in here. Wow
Last edited by Gutentight11; Mar 5, 2025 at 09:08 PM.




