E55: gutted primaries = DIY?
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From: Jacksonville, Florida
2006 E55 AMG --old cars -- E39 M5, 2.7tt Audi S4, E36 M3 **Ducati 996, 748
E55: gutted primaries = DIY?
I searched but no results: I know someone must have done this... or knows the exhaust well enough
Was this a huge PITA? Is it a DIY?
No need to go into a debate about trq/hp - emmissions - etc.
I just want to know if its a doable job and what kind of hardache to expect.
I am not an expert but like to DIY -- I am the type who can change brakes and oil -- rig little projects -- not the type to assemble an engine.
Was this a huge PITA? Is it a DIY?
No need to go into a debate about trq/hp - emmissions - etc.
I just want to know if its a doable job and what kind of hardache to expect.
I am not an expert but like to DIY -- I am the type who can change brakes and oil -- rig little projects -- not the type to assemble an engine.
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From: Miami, FL
06 CLS55 Renntech stage 5, 04 CL600 ( will miss ),02e55 , 11 R350
why would you gut the cats ? why not just cut them off and replace them with pipes .. any decent muffler shop should be able to do that ..you can also replace the two downpipes all together with mandrel bent pipes ....for the secondaries , replace all with mandrel bent pipes to the center resonator
Thread Starter
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From: Jacksonville, Florida
2006 E55 AMG --old cars -- E39 M5, 2.7tt Audi S4, E36 M3 **Ducati 996, 748
thats a really interesting point -- I didnt consider the turbulence - resonance caused by gutting the primaries and leaving a large cavity in the piping.
I already have an X-pipe and H pipe -- no 2nds or resonator... just looking for a little more grunt.. A friend had SuperSprint from LT to the OEM mufflers - no cats or resonator.... Smell was no big deal for me -- sound was still rather tame til WOT.... So, my setup should yield similar results... I expect mine will be a tad quieter.
I already have an X-pipe and H pipe -- no 2nds or resonator... just looking for a little more grunt.. A friend had SuperSprint from LT to the OEM mufflers - no cats or resonator.... Smell was no big deal for me -- sound was still rather tame til WOT.... So, my setup should yield similar results... I expect mine will be a tad quieter.
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From: Atlanta
2006 E55 AMG
Dont do it. I did it on my mid pipe to the secondarys and it is a b***h because the cats are made of hard metal mesh substrate. It took over and hour of grinding for one cat and you wont get it smooth.
I recommend straight piping that area and you will pick up HP/TQ by eliminating the bottle neck at the primary. You should pick up 10rwhp from eliminating the bottle neck by the flange, and straight piping the primary cats.
I recommend straight piping that area and you will pick up HP/TQ by eliminating the bottle neck at the primary. You should pick up 10rwhp from eliminating the bottle neck by the flange, and straight piping the primary cats.
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03 E55 AMG, 06 Harley Road King Custom 06 Ram 2500 Cummins, 97 Firebird Race Car, 88 Cutlass Supreme
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Thread Starter
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From: Jacksonville, Florida
2006 E55 AMG --old cars -- E39 M5, 2.7tt Audi S4, E36 M3 **Ducati 996, 748
Update - just kept it easy and had it straight piped. Sound is just as i figured.. a tad more sound - not raspy or drone -- just a little more muscle. I am happy.
Only regret: should have had all the cats and res deleted @ the same time--- would have saved some money.
Only regret: should have had all the cats and res deleted @ the same time--- would have saved some money.
Thread Starter
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Joined: Oct 2009
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From: Jacksonville, Florida
2006 E55 AMG --old cars -- E39 M5, 2.7tt Audi S4, E36 M3 **Ducati 996, 748
Very reasonable request - I will see if my wife we help me contribute to the site. I cant promise good results thou -- I have a really modded intake and pulley that allow you to hear my car scream like a banshee...
For the meantime-- I highly suggest u gut everything if you can and add an X-pipe... with the OEM mufflers you will not get drone or a loud car... it still seems quieter than a GT mustang.
For the meantime-- I highly suggest u gut everything if you can and add an X-pipe... with the OEM mufflers you will not get drone or a loud car... it still seems quieter than a GT mustang.
