C450/C43 AMG
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Stage 2 after 100kkm/60kmiles?

Old May 10, 2025 | 02:42 PM
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2017 c43 coupe
Stage 2 after 100kkm/60kmiles?

Ik it's been talked about a lot, but is it a good idea to do stage 2 after 100k kilometers, intake, downpipe and tune? I love c43 but i would like bit more power. I want to hit atleast 470hp. Car is in perfect mechanical condition, no problems with engine, gearbox works good (except very quiet rattle coming from engine, it dissapears when i rev so i doubt it's anything serious. I talked with few mechanics and they said it's fine)
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Old May 10, 2025 | 03:55 PM
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You should not hear a rattle but more like a tick which comes from the hi-flow fuel system. A rattle is metal on metal and a ticking in the W205 is the fuel system so if you don't mind the rattling, you risk more from a higher tune that is known as not-safe for these engines. Of course, unless you are willing to invest big in engine modification and upgrades, then a downpipe is not going to hurt the engine.
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Old May 10, 2025 | 08:15 PM
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2015 C400 4MATIC Palladium Silver Metallic
I have intake, ECU tune +plus JB4 custom map, and TCU tune, car traps 119mph in the quarter mile (so ~450-480 whp). I've had it tuned since 35,000 miles and now have 70,000 miles. Zero issues. MANY quarter mile drag strip passes.

If you have a rattle that goes away when you rev it, check your motor mounts.
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Old May 11, 2025 | 04:07 AM
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Originally Posted by Cosworth2000
You should not hear a rattle but more like a tick which comes from the hi-flow fuel system.
It's more like very quiet sound, something like tapping on a table with your finger.
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Old May 11, 2025 | 04:32 AM
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Here's the video of the sound
https://streamable.com/c0rcvt
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Old May 12, 2025 | 08:24 AM
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Wastegate rattle, if you only hear it at idle and decel/ coasting then thats probably it. Not much you can do about it.
Also to add to the list of stage 2 cars, i have had it for many miles and have 95k on the car now without any issues. I went with eurocharged due to their reputation and local shop to me.
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Old May 12, 2025 | 12:22 PM
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Originally Posted by MatthewJ
if you only hear it at idle and decel/ coasting then thats probably it.
It's inaudible from inside, even when hood is closed and you're standing in front of the car you don't hear it.
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Old May 12, 2025 | 04:34 PM
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Originally Posted by MatthewJ
Wastegate rattle, if you only hear it at idle and decel/ coasting then thats probably it. Not much you can do about it.
Also to add to the list of stage 2 cars, i have had it for many miles and have 95k on the car now without any issues. I went with eurocharged due to their reputation and local shop to me.
If I recalled correctly, they released software updates to address this or was it a bulletin but anyways, it doesn't solve it completely and I don't know what other things (negatively?) it affects so better off not installing.
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Old May 12, 2025 | 04:36 PM
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