Review: 2nd Cat Delete
05-23-2017, 11:22 AM
#26
MBWorld Fanatic!
Totally. They sound so damn good, but still.
Try and buy performance exhausts for any Euro car and it's wicked expensive though.
Try and buy performance exhausts for any Euro car and it's wicked expensive though.
05-23-2017, 11:27 AM
#27
Member
Thread Starter
Before this, my wrenching passion came from toying with Hondas and DSMs, from there I moved up to the drifting world (240s, RX7s, etc.)... In both instances, do you know what 3 grand would've got me?! I could've bought a whole new car with that money, essentially!
The following 2 users liked this post by Nando_514:
C63fora2w1 (06-14-2017),
kickinrocks (06-14-2017)
05-23-2017, 12:38 PM
#28
Member
*sigh*
I really need to read through old threads again and get a better understanding of what options there are for "after the engine". I know I want LTH, and I'd like hi-flo cats with it. But now I'm wondering about doing a secondary cat delete for now and then doing LTH w/ hi-flo cats later.
Hrrrmmmmm.....
I really need to read through old threads again and get a better understanding of what options there are for "after the engine". I know I want LTH, and I'd like hi-flo cats with it. But now I'm wondering about doing a secondary cat delete for now and then doing LTH w/ hi-flo cats later.
Hrrrmmmmm.....
05-23-2017, 01:25 PM
#29
Member
Thread Starter
*sigh*
I really need to read through old threads again and get a better understanding of what options there are for "after the engine". I know I want LTH, and I'd like hi-flo cats with it. But now I'm wondering about doing a secondary cat delete for now and then doing LTH w/ hi-flo cats later.
Hrrrmmmmm.....
I really need to read through old threads again and get a better understanding of what options there are for "after the engine". I know I want LTH, and I'd like hi-flo cats with it. But now I'm wondering about doing a secondary cat delete for now and then doing LTH w/ hi-flo cats later.
Hrrrmmmmm.....
06-14-2017, 03:49 PM
#30
Let me start by saying, I just got my secondary cats deleted a few hours ago and... WOW! It definitely makes a noticeable difference.
On a whim after work, I decided to head down to a local muffler shop to ask about getting these cats removed and putting straight pipe in their place. We put the car on the lift and took a look... After only 30 seconds, he realized how simple this was going to be. "I'll do it for $80." At only 80 bucks, I couldn't refuse.
30 minutes later, he lowered the car down and I started it... At first, I was very unimpressed. It sounded exactly the same as when I pulled in. Mind you, the engine was obviously still warm, so it was idling normally at 800ish RPMs. So I revved it up...
This things screams above 3500-4000 RPMs! It sounds like a gift from the V8 gods LOLOL. Happy with my investment, I paid the man and drove off. Being from NYC, there was a s*** ton of traffic heading home during rush hour. Driving through the 20 minutes of traffic, you'd be hard-pressed to hear the difference between a stock 63 and one with the 2nd cats removed. It wasn't until I cleared the traffic that I was able to open up this little ****...
I slammed on the gas and banged through 2nd to 4th. Like I mentioned earlier, it isn't until you hit 3500-4000 RPM that you really hear the difference. It's a violent and slightly offensive sound in the higher RPMs. And in no way am I saying, by offensive, that it's bad. It's a throaty tone, just as it was before. But in the higher RPMs, it sounds more mechanical and less restrained. It's as if this is what the car wanted from the beginning!
As for perfomance gains... Sure, you can say you feel a difference, but I wouldn't be too sure that it isn't just the rush of having a new part installed on your car. You're looking for a difference, you'll find it. But so far, my butt-dyno says there's definitely a bit more umpphh when it goes, especially in the lower RPMs.
All in all, just like MANY other threads have said, this is probably one of the best bang-for-buck mods you can do to the car. While driving like a human being, it sounds exactly the same as it did before. In my eyes, this only adds to the value this mod brings. After having gone through the phase of having loud and in-your-face cars, the comfort of having the ability to drive like a regular car is welcomed. At less than $100, the happiness it brings is bar-none. I've driven the car for a total of an hour and half since getting the pipes installed and no CEL. If someone asked if I'd recommend this to another 63 driver, I would in a heartbeat.
I'll try to post a quick video this weekend
Also, I have a before video of the car revving so I'll be able to do a before and after.
On a whim after work, I decided to head down to a local muffler shop to ask about getting these cats removed and putting straight pipe in their place. We put the car on the lift and took a look... After only 30 seconds, he realized how simple this was going to be. "I'll do it for $80." At only 80 bucks, I couldn't refuse.
30 minutes later, he lowered the car down and I started it... At first, I was very unimpressed. It sounded exactly the same as when I pulled in. Mind you, the engine was obviously still warm, so it was idling normally at 800ish RPMs. So I revved it up...
This things screams above 3500-4000 RPMs! It sounds like a gift from the V8 gods LOLOL. Happy with my investment, I paid the man and drove off. Being from NYC, there was a s*** ton of traffic heading home during rush hour. Driving through the 20 minutes of traffic, you'd be hard-pressed to hear the difference between a stock 63 and one with the 2nd cats removed. It wasn't until I cleared the traffic that I was able to open up this little ****...
I slammed on the gas and banged through 2nd to 4th. Like I mentioned earlier, it isn't until you hit 3500-4000 RPM that you really hear the difference. It's a violent and slightly offensive sound in the higher RPMs. And in no way am I saying, by offensive, that it's bad. It's a throaty tone, just as it was before. But in the higher RPMs, it sounds more mechanical and less restrained. It's as if this is what the car wanted from the beginning!
As for perfomance gains... Sure, you can say you feel a difference, but I wouldn't be too sure that it isn't just the rush of having a new part installed on your car. You're looking for a difference, you'll find it. But so far, my butt-dyno says there's definitely a bit more umpphh when it goes, especially in the lower RPMs.
All in all, just like MANY other threads have said, this is probably one of the best bang-for-buck mods you can do to the car. While driving like a human being, it sounds exactly the same as it did before. In my eyes, this only adds to the value this mod brings. After having gone through the phase of having loud and in-your-face cars, the comfort of having the ability to drive like a regular car is welcomed. At less than $100, the happiness it brings is bar-none. I've driven the car for a total of an hour and half since getting the pipes installed and no CEL. If someone asked if I'd recommend this to another 63 driver, I would in a heartbeat.
I'll try to post a quick video this weekend
Also, I have a before video of the car revving so I'll be able to do a before and after.
06-14-2017, 04:34 PM
#32
Super Member
I think you would be much better off taking it to your local muffler shop that works on hot rods and builds custom exhausts. It will not have a fancy name attached to it but it will be made to your exact specifications, out of the material of your choice, with the mufflers of your choice and cost about 1/5 of what you would pay anyone else. When I am out of warranty that is exactly what I intend to do.
06-14-2017, 10:25 PM
#33
Member
*sigh*
I really need to read through old threads again and get a better understanding of what options there are for "after the engine". I know I want LTH, and I'd like hi-flo cats with it. But now I'm wondering about doing a secondary cat delete for now and then doing LTH w/ hi-flo cats later.
Hrrrmmmmm.....
I really need to read through old threads again and get a better understanding of what options there are for "after the engine". I know I want LTH, and I'd like hi-flo cats with it. But now I'm wondering about doing a secondary cat delete for now and then doing LTH w/ hi-flo cats later.
Hrrrmmmmm.....
06-20-2017, 04:23 PM
#35
Here is what I found... Mic mounted on the diffuser.
I listen to it alot...
I listen to it alot...
The following users liked this post:
OmarC63 (06-20-2017)
06-21-2017, 04:18 PM
#36
Junior Member
Here is what I found... Mic mounted on the diffuser.
I listen to it alot...
https://www.youtube.com/watch?v=1Gy5CBDxRfE
I listen to it alot...
https://www.youtube.com/watch?v=1Gy5CBDxRfE
06-21-2017, 05:27 PM
#37
It sounds amazing but I was really interested in hearing a before and after of the same car using the same recording equipment, just to get a full understanding of the difference.
06-21-2017, 07:12 PM
#38
Junior Member
Join Date: Aug 2007
Location: Perth West Australia
Posts: 58
Likes: 0
Received 2 Likes
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2 Posts
MY13 C63 P30, K&N filters, V6 tune, secondary cats deleted.
After doing a lot of reading on this forum about 2nd cat deletions, this post from Nando_514I sealed the deal for me, but I wanted the ability to bolt the cats back in and out rather than the cut and weld option.
After getting a price from Mike for his power pipes (which is a quality product) the Aus$ and freight pushed it up to around $1000 ouch, so I found a local exhaust shop that built a stainless steel with mantel bend bolt in-out pipes for $300, in C mode just putting around you would hardly know the cats were removed but push down the loud pedal this thing comes alive, then in S, S+ of M it's just awsome, this is the best bang for bucks upgrade I have ever done, they should come like this from the factory :-). The best thing about this mod is you can drive under the radar with a beautiful slightly louder note or you can live in the "violent and slightly offensive sound in the higher RPMs" range.
So if anyone out there is sitting on the fence about doing this mod, JUST DO IT, you will not regret it.
After getting a price from Mike for his power pipes (which is a quality product) the Aus$ and freight pushed it up to around $1000 ouch, so I found a local exhaust shop that built a stainless steel with mantel bend bolt in-out pipes for $300, in C mode just putting around you would hardly know the cats were removed but push down the loud pedal this thing comes alive, then in S, S+ of M it's just awsome, this is the best bang for bucks upgrade I have ever done, they should come like this from the factory :-). The best thing about this mod is you can drive under the radar with a beautiful slightly louder note or you can live in the "violent and slightly offensive sound in the higher RPMs" range.
So if anyone out there is sitting on the fence about doing this mod, JUST DO IT, you will not regret it.
The following users liked this post:
C63fora2w1 (06-22-2017)
06-22-2017, 04:30 PM
#39
Secondary Cat Delete
Recently had a local muffler shop cut my secondaries out and replaced with straight SS pipe. Tame during normal driving, loud when you get on it, and no drone at highway speeds. Overall, very happy with it. Considering how cheap it is to do, it's totally worth it. If I ever get bored with it or want moar loudness, I'll x-pipe the resonator.
