Surprise
Thread Starter
MBWorld Fanatic!
Joined: May 2009
Posts: 1,484
Likes: 13
From: Abu Dhabi
C218 CLS63TT PP Edition1, W213 E63S
Surprise
Speechless
direct no cats
turbo sound is louder and better
exhuast note at muffler is bout 30% louder @ WOT but from inside the car it is almost like stock. no noise at all
NOW i need a tune for CEL and more boost
direct no cats
turbo sound is louder and better
exhuast note at muffler is bout 30% louder @ WOT but from inside the car it is almost like stock. no noise at all
NOW i need a tune for CEL and more boost
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Thread Starter
MBWorld Fanatic!
Joined: May 2009
Posts: 1,484
Likes: 13
From: Abu Dhabi
C218 CLS63TT PP Edition1, W213 E63S
here are some videos
http://www.youtube.com/watch?v=1ou060vx-ag
http://www.youtube.com/watch?v=20nZxaXSoDQ
http://www.youtube.com/watch?v=1ou060vx-ag
http://www.youtube.com/watch?v=20nZxaXSoDQ
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Super Member
Joined: Mar 2007
Posts: 937
Likes: 1
From: Long Island, NY
SL63
here are some videos
http://www.youtube.com/watch?v=1ou060vx-ag
http://www.youtube.com/watch?v=20nZxaXSoDQ
http://www.youtube.com/watch?v=1ou060vx-ag
http://www.youtube.com/watch?v=20nZxaXSoDQ
Did you dyno the car before and after cat delete.
Would you offer your impression if car feels much stronger ?
MBWorld Fanatic!
Joined: Apr 2009
Posts: 2,515
Likes: 17
From: Toronto
2016 C63 S
Just a question....
Is the tune going to be that much more different than a stage 1 tune
By uncorking the exhaust you're allowing the turbos to spin more free thus allowing the turbos to work more efficiently
Won't the stage 1 tune compensate for that?
Just askin....
Is the tune going to be that much more different than a stage 1 tune
By uncorking the exhaust you're allowing the turbos to spin more free thus allowing the turbos to work more efficiently
Won't the stage 1 tune compensate for that?
Just askin....
Member
Joined: Dec 2011
Posts: 221
Likes: 4
2012 CLS 63 AMG
I'm real interested in Ali's results, particularly if he goes with the Vtech stage 2 tune as this is the route I want to take with my car. It would be real interesting to compare his stage 2 with exhaust mods results to my bone stock with stage 1 tuning.
I really need to get my car to a track soon. I'm thinking low 11's won't be a problem
Last edited by Ready2roll; Dec 31, 2011 at 10:08 AM.
Thread Starter
MBWorld Fanatic!
Joined: May 2009
Posts: 1,484
Likes: 13
From: Abu Dhabi
C218 CLS63TT PP Edition1, W213 E63S
turbo spool sounds al lot louder and better.
i didn't try with one of my friends to see the diffrence at least in performance.
but if it is true that deleting cats are giving 6RWHP, i would rather to but them back.
i can feel it is pulling stronger, but i have to try it by compairing with one of my friends that i tried with before.
i didn't try with one of my friends to see the diffrence at least in performance.
but if it is true that deleting cats are giving 6RWHP, i would rather to but them back.
i can feel it is pulling stronger, but i have to try it by compairing with one of my friends that i tried with before.
Thread Starter
MBWorld Fanatic!
Joined: May 2009
Posts: 1,484
Likes: 13
From: Abu Dhabi
C218 CLS63TT PP Edition1, W213 E63S
i didn't dyno the car
any deleting in cats for a FI car will sure make some power.
infact, i saw the stock cats, they were short and either 300 or 400 cell.
they are not restrictive as 55k cats.
Member
Joined: Dec 2011
Posts: 221
Likes: 4
2012 CLS 63 AMG
turbo spool sounds al lot louder and better.
i didn't try with one of my friends to see the diffrence at least in performance.
but if it is true that deleting cats are giving 6RWHP, i would rather to but them back.
i can feel it is pulling stronger, but i have to try it by compairing with one of my friends that i tried with before.
i didn't try with one of my friends to see the diffrence at least in performance.
but if it is true that deleting cats are giving 6RWHP, i would rather to but them back.
i can feel it is pulling stronger, but i have to try it by compairing with one of my friends that i tried with before.
One would think you would gain far more by removing the cats.
Do you have access to a dyno?
I'm anxious to see how you run against your friend
Super Member
Joined: Jan 2004
Posts: 939
Likes: 5
From: Del Mar, CA
2003 CL600 2005 745Li
turbo spool sounds al lot louder and better.
i didn't try with one of my friends to see the diffrence at least in performance.
but if it is true that deleting cats are giving 6RWHP, i would rather to but them back.
i can feel it is pulling stronger, but i have to try it by compairing with one of my friends that i tried with before.
i didn't try with one of my friends to see the diffrence at least in performance.
but if it is true that deleting cats are giving 6RWHP, i would rather to but them back.
i can feel it is pulling stronger, but i have to try it by compairing with one of my friends that i tried with before.
Thread Starter
MBWorld Fanatic!
Joined: May 2009
Posts: 1,484
Likes: 13
From: Abu Dhabi
C218 CLS63TT PP Edition1, W213 E63S
Senior Member
Joined: Mar 2008
Posts: 317
Likes: 0
2012 E63 PP, 2012 Ferrari 458, 2012 Boxster S
Which would be considered the most restrictive in terms of releasing air flow to the turbos? The Cat or the Resonator?
I'm still not decided if I will go with straight pipes or keep either the Cat or Resonator.
Ken
I'm still not decided if I will go with straight pipes or keep either the Cat or Resonator.
Ken
Administrator
Joined: Nov 2001
Posts: 12,263
Likes: 901
From: THE Orange County, California
2024 C8 Z06- 2025 BMW CS- 2022 Porsche 992 GTS
If you drop the cell count in the cats on a turbo you will get more air and you should get more power.
