W211 AMG Discuss the W211 AMG's such as the E55 and the E63

e55 Gutted cats questions?

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Old Aug 20, 2009 | 04:43 PM
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myfirste55's Avatar
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E55
e55 Gutted cats questions?

Has anyone gutted the cats or replaced the VERY RESTRICTIVE H-Pipe with an offroad (catless) pipe on there E55? I heard it unlocks tons of power.. Is that true? What's the hp gain exactly? What does it sound like after?
I'm very interested.. Any thoughts

Thanks

Last edited by myfirste55; Aug 20, 2009 at 07:21 PM.
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Old Aug 20, 2009 | 09:58 PM
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shardul's Avatar
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From: Houston
2003 W211 E55, 2003 W220 S600
do a search my friend there are countless post/videos on this subject.
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Old Aug 20, 2009 | 11:58 PM
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chiromikey's Avatar
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'03 E55, Range Rover Sport Supercharged, Ducati 748R
removal of primary cats is worth roughly 15rwhp. sound will be unchanged on an otherwise stock exhaust system.
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Old Aug 21, 2009 | 12:49 AM
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Ali_E55's Avatar
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From: Abu Dhabi
C218 CLS63TT PP Edition1, W213 E63S
not always removing primary cats add power ><

one of my freind removed them and his car became weak @@

for a week it was stronger and faster but after that, it really lost alot of power.
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