Performance Exhuast for SL500

SL Rookie

New Member
Joined
Mar 24, 2003
Messages
5
Location
Bedfordshire
Car
SL500 (129)
I'm looking into changing the centre sections of the exhaust on a 1991 SL500. The purpose is to allow some freeflow and remove the restricted feel of the response from the throttle, oh and it may sound nicer too.

Has anyone replaced these sections and have there been any issues to report?

Is the CAT likely to cause a problem?
 

kid-jensen

MB Enthusiast
Joined
Dec 16, 2002
Messages
1,239
Location
Epsom Downs
Car
ML 320 W164
SL Rookie,

IMHO, changing the centre sections will not make a noticable difference to anything.

If your car is J reg or older, you can take off the Cats with a clear concience. Any newer than that, you'll probably have to replace them for the MOT.

I say probably, you might just get away with it....;)

The change in performance will not be that great though, but you may see 1-2 mpg improvement in consumption.
 

S32 AMG

New Member
Joined
Aug 9, 2003
Messages
4
NOT TRUE AT ALL, my god

mercedes catalytic converter and exhaust is probably THE MOST restrictive of ANY manufacturer,

on your SL500 you should get roughly 40HP boost with straight pipes and high flow exhaust, not to mention it would sound absolutely amazing under full throttle. That would be the very first mod i do, ALong with high flow ram air cold air intake
 

GrahamC230K

MB Enthusiast
Joined
Jul 14, 2002
Messages
9,755
Car
Audi A3 & S4 quattro
Originally posted by S32 AMG
NOT TRUE AT ALL, my god

mercedes catalytic converter and exhaust is probably THE MOST restrictive of ANY manufacturer,

on your SL500 you should get roughly 40HP boost with straight pipes and high flow exhaust, not to mention it would sound absolutely amazing under full throttle. That would be the very first mod i do, ALong with high flow ram air cold air intake

You don't think 40BHP is a bit exagerated?
 

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