Secondary Cat delete on C63s Perf Exhaust
#251
Did I hurt your feelings? It seems like it. You can't stop talking.
Piggyback to get 600hp to the wheels? What are you even saying dude? It is now clear that you have no idea what you're talking about. 510 to the wheel is the MOST you will ever get from a tune only or a piggyback. And for me, it is VERY far from being enough for a DD. FYI, you need upgraded turbos to get 600 to the wheel.
Please stop spreading misinformation, and more importantly, stop trying to speak for everyone and stick to what you have actually experienced.
If you didn't want this thread to go off-topic this much, you could've kept classy without bashing my post that offered a nice, cheap alternative for people that wanted more sound AND power. You are just a classless party pooper.
Piggyback to get 600hp to the wheels? What are you even saying dude? It is now clear that you have no idea what you're talking about. 510 to the wheel is the MOST you will ever get from a tune only or a piggyback. And for me, it is VERY far from being enough for a DD. FYI, you need upgraded turbos to get 600 to the wheel.
Please stop spreading misinformation, and more importantly, stop trying to speak for everyone and stick to what you have actually experienced.
If you didn't want this thread to go off-topic this much, you could've kept classy without bashing my post that offered a nice, cheap alternative for people that wanted more sound AND power. You are just a classless party pooper.
600 hp sent to the rear wheels. As in RWD, not AWD. No one is making 600 WHEEL horsepower on stock turbos. But 600 HP (what a standard tune or piggy will get you) to the crank on a RWD car is about the limit for a daily driver.
Look at the new M5 or the E63S. If traction wasn't an issue at those power levels, you think BMW or MB still would have opted to add all that weight over the front axle for no reason?
If the C63S had AWD, I would say the sky's the limit for power... but that's not the case for a front engine, RWD car. Mid-engine, rear engine, even a front engine with a transaxle would be much better for traction.
Last edited by AlexZTuned; 09-10-2017 at 12:27 PM.
#252
Reading comprehension > you
600 hp sent to the rear wheels. As in RWD, not AWD. No one is making 600 WHEEL horsepower on stock turbos. But 600 HP (what a standard tune or piggy will get you) to the crank on a RWD car is about the limit for a daily driver.
Look at the new M5 or the E63S. If traction wasn't an issue at those power levels, you think BMW or MB stillwould have opted to add all that weight over the front axle for no reason?
600 hp sent to the rear wheels. As in RWD, not AWD. No one is making 600 WHEEL horsepower on stock turbos. But 600 HP (what a standard tune or piggy will get you) to the crank on a RWD car is about the limit for a daily driver.
Look at the new M5 or the E63S. If traction wasn't an issue at those power levels, you think BMW or MB stillwould have opted to add all that weight over the front axle for no reason?
From a dig, traction is an issue in any RWD car, including a 675LT and a P1.
If we're talking about traction, I think you're first to admit that it's easy to break traction, even at stock power output.
That by itself isn't a reason to be happy with a measly 600hp. I don't live at the 1/4 mile and this problem is easily fixed with a pair of sticky tires like you've mentioned previously.
I've been DDing my 750hp+ C63S for quite some time now and traction wise, I can live with it just fine. On stock tires!
I don't agree with your assertion stating that 600hp crank is the limit for a daily driver. You are, again, making assumptions for everyone. Maybe invest in some driver ED classes?
But yes sir, it is clear that you suffer from the Napoleon complex, therefore, I'll leave it at that. I will not be contributing to polluting this thread and entertaining you any further.
Enjoy your monster.
The following users liked this post:
Ed99 (10-08-2017)
#253
You are right. I read that too quickly. I stand corrected.
From a dig, traction is an issue in any RWD car, including a 675LT and a P1.
If we're talking about traction, I think you're first to admit that it's easy to break traction, even at stock power output.
That by itself isn't a reason to be happy with a measly 600hp. I don't live at the 1/4 mile and this problem is easily fixed with a pair of sticky tires like you've mentioned previously.
I've been DDing my 750hp+ C63S for quite some time now and traction wise, I can live with it just fine. On stock tires!
I don't agree with your assertion stating that 600hp crank is the limit for a daily driver. You are, again, making assumptions for everyone. Maybe invest in some driver ED classes?
But yes sir, it is clear that you suffer from the Napoleon complex, therefore, I'll leave it at that. I will not be contributing to polluting this thread and entertaining you any further.
Enjoy your monster.
From a dig, traction is an issue in any RWD car, including a 675LT and a P1.
If we're talking about traction, I think you're first to admit that it's easy to break traction, even at stock power output.
That by itself isn't a reason to be happy with a measly 600hp. I don't live at the 1/4 mile and this problem is easily fixed with a pair of sticky tires like you've mentioned previously.
I've been DDing my 750hp+ C63S for quite some time now and traction wise, I can live with it just fine. On stock tires!
I don't agree with your assertion stating that 600hp crank is the limit for a daily driver. You are, again, making assumptions for everyone. Maybe invest in some driver ED classes?
But yes sir, it is clear that you suffer from the Napoleon complex, therefore, I'll leave it at that. I will not be contributing to polluting this thread and entertaining you any further.
Enjoy your monster.
#254
Well that escalated quickly!
Guilty, wish you the best for your sale mate. 655Whp is definitely reaching this cars max potential.
Look forward to seeing that this 1500hp beast will look like. ZO6? GTR?
In the meantime, let's stick to the OP.
Guilty, wish you the best for your sale mate. 655Whp is definitely reaching this cars max potential.
Look forward to seeing that this 1500hp beast will look like. ZO6? GTR?
In the meantime, let's stick to the OP.
The following users liked this post:
Guilty (09-10-2017)
#255
Junior Member
Joined: Feb 2017
Posts: 24
Likes: 0
From: Central Valley
W205 C63 Coupe, 2015 Ford F150
My local shop (Fresno, Ca) is quoting me $700 for the secondary cat delete. This seems a bit steep compared to what everyone else has paid.. Anyone recommend a shop in SoCal or NorCal?
#256
3C Performance Exhaust
2608 S La Cienega Blvd, Los Angeles, CA 90034
(310) 839-2442
https://yelp.com/biz/3c-performance-...-los-angeles-2
The following users liked this post:
MrTPT (09-12-2017)
#257
That's obscene. Ask for an estimate as to how many hours of labor/ what their rates are. Mine took ~3 hours plus the two pieces of exhaust piping. Exact bill was $300. Welds are on point and not a hack job. Tight quarters and little room for error as I can imagine what an exhaust leak there would sound like/smell like.
#258
Junior Member
Joined: Feb 2017
Posts: 24
Likes: 0
From: Central Valley
W205 C63 Coupe, 2015 Ford F150
That's obscene. Ask for an estimate as to how many hours of labor/ what their rates are. Mine took ~3 hours plus the two pieces of exhaust piping. Exact bill was $300. Welds are on point and not a hack job. Tight quarters and little room for error as I can imagine what an exhaust leak there would sound like/smell like.
#259
#260
As for the downpipes that's a decision you need to make, short of warranty concerns, if its just replacing the angled piece left by removing the second cats, then just stainless steel inserts tig welded in should be suffice...Note an exhaust shop would need to carry out the work.
#262
By removing the secondary cats, you will experience a lot more crackle in each sports mode, in particular Sport + and Race modes. Even in Comfort mode you'll here a nice burble and small crackles in the lower gears when slowing down.
Re-tuning the ECU to inject more fuel will result in more serious crackles, however warranty comes into play there not to mention sound regulations. I would suggest remove the S/Cats first as I think you'll be really satisfied.
Hope that helps
Re-tuning the ECU to inject more fuel will result in more serious crackles, however warranty comes into play there not to mention sound regulations. I would suggest remove the S/Cats first as I think you'll be really satisfied.
Hope that helps
#265
Removal of Secondary Cats
I had mine done after I spoken with MB, and there didn't seem to be any concerns relating to Warranty.....If the exhaust itself had a manufacturing default, then it may raise some questions around the possible cause of the fault and whether or not the secondary cats removal was in some way responsible. As far as all other components and electrical systems are concerned, it will not void any warranty.
I'm led to believe that the secondary cats were necessary for some countries to comply with strict Emission control standards like in California, so unless you live there knock yourself out.
Note: I had the secondary Cats removed and fitted 12 mm spacers and the car sounds fantastic and the widened track just gives it a OEM feel without going too far
#266
I had mine done after I spoken with MB, and there didn't seem to be any concerns relating to Warranty.....If the exhaust itself had a manufacturing default, then it may raise some questions around the possible cause of the fault and whether or not the secondary cats removal was in some way responsible. As far as all other components and electrical systems are concerned, it will not void any warranty.
I'm led to believe that the secondary cats were necessary for some countries to comply with strict Emission control standards like in California, so unless you live there knock yourself out.
Note: I had the secondary Cats removed and fitted 12 mm spacers and the car sounds fantastic and the widened track just gives it a OEM feel without going too far
#267
Removal of Secondary Cats
Regards
P.K
#268
Planning on getting this done soon... any recommendations on how to get it done? Specifically, I can see how a performance shop can easily cut out the secondary cat, but how do they weld the new section back in place?? I don't see any way for them to actually access the top half of the exhaust, as it's so wedged up there... do any of you have any insight in how it's been done on your cars? Thanks.
#269
I just had mine done a couple of weeks ago at Eurocharged Toronto.
They did it pretty easily and it only took a couple hours.
I did something similar in my E92 M3 and the difference was night/day. The increase for my C63S was less than I imagined, but I'm still very happy I did it! It's the middle of winter here, so I haven't driven the car in the same way I would in the summer. I'm sure when summertime comes and I boot it harder, it's going to sound even better!
They did it pretty easily and it only took a couple hours.
I did something similar in my E92 M3 and the difference was night/day. The increase for my C63S was less than I imagined, but I'm still very happy I did it! It's the middle of winter here, so I haven't driven the car in the same way I would in the summer. I'm sure when summertime comes and I boot it harder, it's going to sound even better!
Last edited by KJ; 01-19-2018 at 09:39 AM.
The following users liked this post:
oajr (01-20-2018)
#271
And obviously, the welds go all around the exhaust! LOL
#273
great thread, very useful. the question i have is the same that some other gent had, which is, "does it change the loudness, AT STARTUP, with the valves closed?" I understand that the loudness is NOT changed at idle with the valves closed, but the answer read that it may actually increase the decibels at startup, which in my case would be bad given the hour of the day that i leave for work.
can anyone please confirm that the volume is louder, at startup (while in cold start mode), even with the valves closed?
thanks in advance,
can anyone please confirm that the volume is louder, at startup (while in cold start mode), even with the valves closed?
thanks in advance,
#274
..."does it change the loudness, AT STARTUP, with the valves closed?" I understand that the loudness is NOT changed at idle with the valves closed, but the answer read that it may actually increase the decibels at startup, which in my case would be bad given the hour of the day that i leave for work.
can anyone please confirm that the volume is louder, at startup (while in cold start mode), even with the valves closed?
can anyone please confirm that the volume is louder, at startup (while in cold start mode), even with the valves closed?
Now that I got it done, I can definitely say that this is NOT true. Cold start isn't noticeably louder after doing this with the valves closed.
When cruising at highway speeds 90 MPH (145 km/h) there is no drone. I noticed now that opening and closing the valves while cruising, I don't notice any difference in sound.
Before the mod, I could notice a difference in sound when pressing the button while cruising at highway speed. I actually thought the shop might have unplugged my exhaust from the switch during the modification process!
Then I stomped on the gas and hit the button and noticed a huge difference in sound and thought "nevermind, it still works". This is perfect for me, because I don't want the exhaust to be louder while cruising on the highway, but as soon as I open up the throttle, I can hear the power much more!
I would definitely recommend this mod for anyone who loves the stock sound and wants just a little more volume (more bass especially) with no compromises (no loud start, no droning on the highway etc.). It won't satisfy anyone looking for a huge increase in volume. But it won't leave anyone with "regret" after doing it either.
I'm stuck right in the middle, I want even more sound, but at the same time, I don't want to draw too much attention to myself either. I decided I'm going to leave it like this, since I like to have my fun and fly under the radar so to speak.
#275
........I would definitely recommend this mod for anyone who loves the stock sound and wants just a little more volume (more bass especially) with no compromises (no loud start, no droning on the highway etc.). It won't satisfy anyone looking for a huge increase in volume. But it won't leave anyone with "regret" after doing it either.......
Again, thanks for taking the time to respond.