SL/R230: Rear cats coming apart, can I delete?
Thread Starter
Senior Member
Joined: May 2012
Posts: 263
Likes: 1
On my 3rd coupe!
Junior Member
Joined: Sep 2009
Posts: 64
Likes: 1
From: new york
2004 sl500
No plans on lights coming on and from reading threads have not heard of lights coming on.
There is def a difference but nothing crazy or to noticeable. Mostly on deeper roar and sounds lot nicer when getting on the gas. Did not effect noise in cabin at all or at any speed.
They charged me $125 to cut out and replace with pipes. For the money , it is 100% worth the difference.
Search youtube, Mercedes sl or r230 muffler delete or resonator delete
There is def a difference but nothing crazy or to noticeable. Mostly on deeper roar and sounds lot nicer when getting on the gas. Did not effect noise in cabin at all or at any speed.
They charged me $125 to cut out and replace with pipes. For the money , it is 100% worth the difference.
Search youtube, Mercedes sl or r230 muffler delete or resonator delete
Senior Member
Joined: Aug 2009
Posts: 427
Likes: 57
13 GL350, 14 SL550
Mine were doing the same and I actually made an appointment to have them replaced with aftermarket (Monroe I think.. they make a universal cat that fits exactly)
Got there and decided I just wanted straight pipes welded in after they removed the old cats. It was actually cheaper because I didn't have to buy the new cats.
It is NOT a night and day difference but the car sounds much better!
You only hear it in two specific instances:
1. When starting the car in the garage, when it revs you hear a throatier growl than before. You'll notice difference.
2. From 1500-2000rpm when accelerating, you'll hear that roar again. It doesn't vibrate anything and there is no droning inside the car. With the top down you start hitting the gas harder from 1500rpm until 2000rpm because it just sounds so awesome
I always drive top down but don't remember hearing much of a difference inside after the cats were removed when the top is up (1500rpm roar is better as mentioned above, but if you don't accelerate hard it's not that noticeable)
I'd do it again in a heartbeat. Almost unnoticable if you drive slow and an amazing roar when you drive it hard. What a great combination!
Got there and decided I just wanted straight pipes welded in after they removed the old cats. It was actually cheaper because I didn't have to buy the new cats.
It is NOT a night and day difference but the car sounds much better!
You only hear it in two specific instances:
1. When starting the car in the garage, when it revs you hear a throatier growl than before. You'll notice difference.
2. From 1500-2000rpm when accelerating, you'll hear that roar again. It doesn't vibrate anything and there is no droning inside the car. With the top down you start hitting the gas harder from 1500rpm until 2000rpm because it just sounds so awesome
I always drive top down but don't remember hearing much of a difference inside after the cats were removed when the top is up (1500rpm roar is better as mentioned above, but if you don't accelerate hard it's not that noticeable)
I'd do it again in a heartbeat. Almost unnoticable if you drive slow and an amazing roar when you drive it hard. What a great combination!
Thread Starter
Senior Member
Joined: May 2012
Posts: 263
Likes: 1
On my 3rd coupe!
Mine were doing the same and I actually made an appointment to have them replaced with aftermarket (Monroe I think.. they make a universal cat that fits exactly)
Got there and decided I just wanted straight pipes welded in after they removed the old cats. It was actually cheaper because I didn't have to buy the new cats.
It is NOT a night and day difference but the car sounds much better!
You only hear it in two specific instances:
1. When starting the car in the garage, when it revs you hear a throatier growl than before. You'll notice difference.
2. From 1500-2000rpm when accelerating, you'll hear that roar again. It doesn't vibrate anything and there is no droning inside the car. With the top down you start hitting the gas harder from 1500rpm until 2000rpm because it just sounds so awesome Hi
I always drive top down but don't remember hearing much of a difference inside after the cats were removed when the top is up (1500rpm roar is better as mentioned above, but if you don't accelerate hard it's not that noticeable)
I'd do it again in a heartbeat. Almost unnoticable if you drive slow and an amazing roar when you drive it hard. What a great combination!
Got there and decided I just wanted straight pipes welded in after they removed the old cats. It was actually cheaper because I didn't have to buy the new cats.
It is NOT a night and day difference but the car sounds much better!
You only hear it in two specific instances:
1. When starting the car in the garage, when it revs you hear a throatier growl than before. You'll notice difference.
2. From 1500-2000rpm when accelerating, you'll hear that roar again. It doesn't vibrate anything and there is no droning inside the car. With the top down you start hitting the gas harder from 1500rpm until 2000rpm because it just sounds so awesome
HiI always drive top down but don't remember hearing much of a difference inside after the cats were removed when the top is up (1500rpm roar is better as mentioned above, but if you don't accelerate hard it's not that noticeable)
I'd do it again in a heartbeat. Almost unnoticable if you drive slow and an amazing roar when you drive it hard. What a great combination!
What are the pros & cons of removing the front pair (if anyone knows)?
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Senior Member
Joined: Oct 2009
Posts: 269
Likes: 4
From: New York
03 SL500(Sold), 09 C300, 11 E550
Do not Remove the forward cats as the car will no longer pass emissions and will trip a MIL. if i remember correctly one side is permanently attached to the exhaust manifold anyway so you would need to buy new headers to do that... Not the type of car for that modification...
Rear cat delete is perfect for this car though. the sound is amazing
Rear cat delete is perfect for this car though. the sound is amazing
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