C63 - Remap or Seconday Cat Delete first?
Discussion
I've had my 2014 C63 for just over a year now, and i still love it. Bought it with 11k on and now its just touched 24k.
as with my previous cars after a while i like to 'do something' to them to just freshen things up. In my case and with most C63s it looks fantastic as it is and i dont really need to change anything appearance wise, except perhaps blacking a lot of the chrome out.
im considering a Eurocharged (V7) remap from the likes of MSL. I hear time and time again that the remap opens up all 500ish ponies and is leaps and bounds 'more' AMG than present. But the other thing im tempted to do is a secondary cat delete to open up some noise.
my fear of the cat delete is that if i take them off and i dont like the sound then its not really a straightforward case of putting them back in.. or is it? One thing that puts me off the cat delete is drone inside the cabin which i definitely want to avoid.
which should be first do you think?
I don't want to sound like a killjoy as I have had Cat deletes and exhaust mods on many of my cars.
I presume you are in the UK, if so your car is now 3 years old and so needs an MOT. If it would be difficult to put the Cats back in then you may have difficulty passing the test.
Good luck with the car though.
I presume you are in the UK, if so your car is now 3 years old and so needs an MOT. If it would be difficult to put the Cats back in then you may have difficulty passing the test.
Good luck with the car though.
You should do your mods before you remap (inc cat delete).
As for whether you should do a cat delete in the first place, I don't know about C63 specifically, but:
- It will usually increase rasp and drone
- As long as you keep your cats, you can always swap them back in come MOT time (or if you decide you don't like it) and it shouldn't be very difficult
As for whether you should do a cat delete in the first place, I don't know about C63 specifically, but:
- It will usually increase rasp and drone
- As long as you keep your cats, you can always swap them back in come MOT time (or if you decide you don't like it) and it shouldn't be very difficult
The car will still pass an MOT on emissions with the secondary cats removed. However, a tester could fail it on the grounds that the factory cats have been removed. The way around this is to have the OEM cats gutted and refitted. The weld should be on the top and thus would not be visible at not time.
What is to be gained? No performance gains with the cat delete. You'll get more noise obviously but because the resonator is left in place you won't get any drone.
You can remap before or after because the cats don't add anything performance wise. You need full manifolds if you want exhaust based gains.
What is to be gained? No performance gains with the cat delete. You'll get more noise obviously but because the resonator is left in place you won't get any drone.
You can remap before or after because the cats don't add anything performance wise. You need full manifolds if you want exhaust based gains.
thanks for the replies chaps.
i should have emphasised i only considered a secondary cat delete for a little more noise as opposed to power gains, id rely on a remap for that.
a Eurocharged remap is £750, and if they did the cat delete a further £250.
Prospeed Cardiff can do the cat delete for almost £100 less, and have said they can fit flanges at additional charge so that i can replace the straight pipes with the cats come MOT time or for resell time. Sounds good to me?
could just take the car to MSL to get the mapping done at a later date then.
i should have emphasised i only considered a secondary cat delete for a little more noise as opposed to power gains, id rely on a remap for that.
a Eurocharged remap is £750, and if they did the cat delete a further £250.
Prospeed Cardiff can do the cat delete for almost £100 less, and have said they can fit flanges at additional charge so that i can replace the straight pipes with the cats come MOT time or for resell time. Sounds good to me?
could just take the car to MSL to get the mapping done at a later date then.
My personal problem with a Secondary Cat Delete is that you have to cut the AMG system. Personally if I was looking to buy a C63 now, I'd be under the car to take a look at whether the exhaust had been played with and in my opinion, in a sea of bad/thrashed examples now, it would make me steer clear.
The trouble is, the exhaust is only three parts and this is manifolds, 'down pipes' incl Secondary Cats back to the centre-resonator, and thereafter it's the resonator, rear silencers and pipework. The only bolt-on options are really long-tube headers, or aftermarket rear silencers. The trouble with both is that:
1. With headers, although you can achieve another 40-50hp, it makes the car insanely loud when full throttle when bolted to the AMG silencers. It still sounds like and AMG but amplified 10x.
2. All aftermarket rear silencers that I have come across are quieter than the AMG system, and lose the AMG tone.
The pricey option is headers and aftermarket silencers, which will give you a respectfully 'louder than the standard AMG system' noise but with performance also (incl remap). There are then valved silencers which have a cut-out, which when opened make it incredibly loud, louder than headers onto AMG silencers so you can flit between the two although, the AMG noise is lost.
The trouble is, the exhaust is only three parts and this is manifolds, 'down pipes' incl Secondary Cats back to the centre-resonator, and thereafter it's the resonator, rear silencers and pipework. The only bolt-on options are really long-tube headers, or aftermarket rear silencers. The trouble with both is that:
1. With headers, although you can achieve another 40-50hp, it makes the car insanely loud when full throttle when bolted to the AMG silencers. It still sounds like and AMG but amplified 10x.
2. All aftermarket rear silencers that I have come across are quieter than the AMG system, and lose the AMG tone.
The pricey option is headers and aftermarket silencers, which will give you a respectfully 'louder than the standard AMG system' noise but with performance also (incl remap). There are then valved silencers which have a cut-out, which when opened make it incredibly loud, louder than headers onto AMG silencers so you can flit between the two although, the AMG noise is lost.
Edited by Swole on Tuesday 24th October 12:14
... Car is booked in with MSL on Monday for the sec cat delete with straight pipes, resonator stays as it is. I wont be messing with headers or the primary cats, or the resonator for that matter, and i cant justify the price of an IPE system etc etc as theres just no need.
come selling time i will have the cats welded back in. other than this my car is a factory standard car so i was a little on the fence about chopping up the AMG exhaust but i'll be keeping the car for some time so i dont really mind.
can't wait to upset my neighbors...
come selling time i will have the cats welded back in. other than this my car is a factory standard car so i was a little on the fence about chopping up the AMG exhaust but i'll be keeping the car for some time so i dont really mind.
can't wait to upset my neighbors...
irfan1712 said:
... Car is booked in with MSL on Monday for the sec cat delete with straight pipes, resonator stays as it is. I wont be messing with headers or the primary cats, or the resonator for that matter, and i cant justify the price of an IPE system etc etc as theres just no need.
come selling time i will have the cats welded back in. other than this my car is a factory standard car so i was a little on the fence about chopping up the AMG exhaust but i'll be keeping the car for some time so i dont really mind.
can't wait to upset my neighbors...
You'll enjoy the noise, and you'll spend more on fuel to hear it come selling time i will have the cats welded back in. other than this my car is a factory standard car so i was a little on the fence about chopping up the AMG exhaust but i'll be keeping the car for some time so i dont really mind.
can't wait to upset my neighbors...
. I went the radical way and installed headers, which I regretted at first due to how raw it was but after around 500-miles it refined itself suitably, although it really is so loud still.Swole said:
irfan1712 said:
... Car is booked in with MSL on Monday for the sec cat delete with straight pipes, resonator stays as it is. I wont be messing with headers or the primary cats, or the resonator for that matter, and i cant justify the price of an IPE system etc etc as theres just no need.
come selling time i will have the cats welded back in. other than this my car is a factory standard car so i was a little on the fence about chopping up the AMG exhaust but i'll be keeping the car for some time so i dont really mind.
can't wait to upset my neighbors...
You'll enjoy the noise, and you'll spend more on fuel to hear it come selling time i will have the cats welded back in. other than this my car is a factory standard car so i was a little on the fence about chopping up the AMG exhaust but i'll be keeping the car for some time so i dont really mind.
can't wait to upset my neighbors...
. I went the radical way and installed headers, which I regretted at first due to how raw it was but after around 500-miles it refined itself suitably, although it really is so loud still.I had no issues with headers and no mapping. It felt a lot better actually, much more eager and generally quicker through the revs, although I went with Sports Cats so this might be the reason I had no issues. I then went through Eurocharged V5, V6 and V7.
V5 was much the same throttle mapping as standard albeit more powerful. V6 was roughly the same, but all in all quite unrefined and crude at time with shifts. V7 is totally different, it's quicker all over but I'd say the throttle mapping is quite sensitive in S+/M, and I found myself having to adapt to it. C in V7 is actually a lot nice, much less lazy but still butter smooth and sedate.
V5 was much the same throttle mapping as standard albeit more powerful. V6 was roughly the same, but all in all quite unrefined and crude at time with shifts. V7 is totally different, it's quicker all over but I'd say the throttle mapping is quite sensitive in S+/M, and I found myself having to adapt to it. C in V7 is actually a lot nice, much less lazy but still butter smooth and sedate.
irfan1712 said:
... Car is booked in with MSL on Monday for the sec cat delete with straight pipes, resonator stays as it is. I wont be messing with headers or the primary cats, or the resonator for that matter, and i cant justify the price of an IPE system etc etc as theres just no need.
come selling time i will have the cats welded back in. other than this my car is a factory standard car so i was a little on the fence about chopping up the AMG exhaust but i'll be keeping the car for some time so i dont really mind.
can't wait to upset my neighbors...
I bought my 2013 C63 Saloon last week and im thinking of popping down to MSL for the secondary cat delete. Have you had yours done yet? Opinions?come selling time i will have the cats welded back in. other than this my car is a factory standard car so i was a little on the fence about chopping up the AMG exhaust but i'll be keeping the car for some time so i dont really mind.
can't wait to upset my neighbors...
trowelhead said:
I had the secondary cat delete done by MSL
For me did exactly what I wanted, kept very similar sound just louder (but not ott)
I had absolutely no unwanted drone either so was perfect. Would recommend!
Just came back from MSL and got the secondary cats deleted. It sounds bloody EPIC, and IMO should be like this from stock. Like you i have no drone and can’t even realise it has had it done, until i put my foot down. A lot more pops on downshifts and at upshifting at WOT gives me the meanest crack i’ve heard. Absolutely love it. For me did exactly what I wanted, kept very similar sound just louder (but not ott)
I had absolutely no unwanted drone either so was perfect. Would recommend!
I don't know anyone whos had MOT issues with a secondary cat delete... it doesn't remotely effect emissions. If you start playing with the primary cats then yes that's a risk you take.
Secondary cat on the c63 is by far the best thing I've done for it, sounds fantastic with no drone as mentioned above. I have gone off the idea of a map, I'm reading so many conflicting reviews on version 7 of the Eurocharged map that its put me off a bit really. Its fast enough as is!
Secondary cat on the c63 is by far the best thing I've done for it, sounds fantastic with no drone as mentioned above. I have gone off the idea of a map, I'm reading so many conflicting reviews on version 7 of the Eurocharged map that its put me off a bit really. Its fast enough as is!
You can still buy V5 from Eurocharged. I’m on V7 with headers and it is another level vs standard car, absolutely brutal.
Regarding emissions, my headers have sports cats and emissions wise, I pass. Visually it looks fine underneath, although if they remove the undertray they’d notice that there are no primary cats up by the engine.
Regarding emissions, my headers have sports cats and emissions wise, I pass. Visually it looks fine underneath, although if they remove the undertray they’d notice that there are no primary cats up by the engine.
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