Downpipes for E63S 4matic




Those with active secondary O2 CEL lights on, does the car still drive 100%?
My car was sick! After putting the catless DP on the sound and smells were apparently from a limp running broken IC pump car.
Now that the car is healthy and running right the smell is no longer eye-watering. It’s still the no-cat-life smell but it’s not a crazy stink.
And the sound! It no longer sounds like a raspy straight-piped RAM wide open throttle. When the car was sick it sounded like a UPS truck when flooring it lol. Now it sounds great. Full deep blaring AMG. Not as throaty vs stock but totally acceptable again - no more buzz or blap.
So hopefully if someone reading this thread interested in downpipes they read this far to find out catless sound good when the car is not sick, and the smell is mostly bearable too.
Man you no-cat guys must’ve just thought I was a wimp.
Carry on!
Last edited by I.T. Guy; Nov 13, 2022 at 09:07 PM.
The Best of Mercedes & AMG
My car was sick! After putting the catless DP on the sound and smells were apparently from a limp running broken IC pump car.
Now that the car is healthy and running right the smell is no longer eye-watering. It’s still the no-cat-life smell but it’s not a crazy stink.
And the sound! It no longer sounds like a raspy straight-piped RAM wide open throttle. When the car was sick it sounded like a UPS truck when flooring it lol. Now it sounds great. Full deep blaring AMG. Not as throaty vs stock but totally acceptable again - no more buzz or blap.
So hopefully if someone reading this thread interested in downpipes they read this far to find out catless sound good when the car is not sick, and the smell is mostly bearable too.
Man you no-cat guys must’ve just thought I was a wimp.
Carry on!
https://mbworld.org/forums/c219/5946...s-working.html
https://mbworld.org/forums/c219/5946...s-working.html
I had soft codes
P026A - Charge Air Cooler Efficiency Below Threshold
P023B - Charge Air Cooler Coolant Pump Control Circuit Low
that never tripped the CEL. I only found out my car was sick when it trapped 5mph lower in the 1/4 "something is wrong" and pulled that code, dealer found blown IC pump burnt harness and blown fuse. Car was just limping for who knows how long. Ugh.
IMHO the IC Circuit Ground fault is separate soft code and shows up with the always on IC pump mod and safely ignored as long as the pump is actually working.
I check my car for "soft" DTC's every week now. Silly Mercedes.
Last edited by I.T. Guy; Nov 14, 2022 at 12:43 PM.
https://mbworld.org/forums/c219/5946...s-working.html
I had soft codes
P026A - Charge Air Cooler Efficiency Below Threshold
P023B - Charge Air Cooler Coolant Pump Control Circuit Low
that never tripped the CEL. I only found out my car was sick when it trapped 5mph lower in the 1/4 "something is wrong" and pulled that code, dealer found blown IC pump burnt harness and blown fuse. Car was just limping for who knows how long. Ugh.
IMHO the IC Circuit Ground fault is separate soft code and shows up with the always on IC pump mod and safely ignored as long as the pump is actually working.
I check my car for "soft" DTC's every week now. Silly Mercedes.







