Cutting off 4 cats ...
#1
Cutting off 4 cats ...
What do you think guys...im thinking since long tubes headers are out of reach for me (since the only availables are 8000 and not even out) im thinking about cutting the 4 cats off...should provide 30-40hp and even nicer exhaust tone!![Smilie](https://mbworld.org/forums/images/smilies/smile.gif)
Only thing im worried is running a little on the lean side
![Smilie](https://mbworld.org/forums/images/smilies/smile.gif)
Only thing im worried is running a little on the lean side
![EEK!](https://mbworld.org/forums/images/smilies/eek.gif)
#3
What do you think guys...im thinking since long tubes headers are out of reach for me (since the only availables are 8000 and not even out) im thinking about cutting the 4 cats off...should provide 30-40hp and even nicer exhaust tone!![Smilie](https://mbworld.org/forums/images/smilies/smile.gif)
Only thing im worried is running a little on the lean side![EEK!](https://mbworld.org/forums/images/smilies/eek.gif)
![Smilie](https://mbworld.org/forums/images/smilies/smile.gif)
Only thing im worried is running a little on the lean side
![EEK!](https://mbworld.org/forums/images/smilies/eek.gif)
Thanks
Andy
#4
Member
Join Date: Mar 2008
Posts: 240
Likes: 0
Received 0 Likes
on
0 Posts
'09 C63 Performance Package - Steel Grey/Sahara Biege
Any idea on pricing?
Thanks for all of your input (on this and other topics!)
#5
Very cool. For clarification, the longtube header will eliminate the first set of cats, correct? If that is the case, and there are some of us that don't want the bother or expense of headers, will you offer a "manifold-back" xpipe that will, like the longtubes, eliminate the first cats?
Any idea on pricing?
Thanks for all of your input (on this and other topics!)
Thanks for all of your input (on this and other topics!)
![Cheers](https://mbworld.org/forums/images/smilies/cheers.gif)
The car goes in for exhaust fab. after complete v2 testing (dyno/track) next week.
#6
Almost a Member!
Join Date: Aug 2008
Posts: 33
Likes: 0
Received 0 Likes
on
0 Posts
MTM AUDI TT October Built C63 AMG Palladium Silver. PP ,CF,Alcantara Steering wheel
Andy what about a choice of a full titanium exhaust for weight purposes, i am sure that you will have a lot of buyers...
#7
MBWorld Fanatic!
Yes we will also be fabricating a manifold back setup with X pipe, and yet another exhaust option for those that just want headers.
I can't say for sure yet, but pricing for hard parts like headers/exhaust/pulleys/thermal gaskets, etc. will be lower than what I've seen on the market to date. As soon as I have more info I'll post it.
I can't say for sure yet, but pricing for hard parts like headers/exhaust/pulleys/thermal gaskets, etc. will be lower than what I've seen on the market to date. As soon as I have more info I'll post it.
![Cheers](https://mbworld.org/forums/images/smilies/cheers.gif)
![thumbs](https://mbworld.org/forums/images/smilies/thumbsup.gif)
Trending Topics
#8
The difference in weight is easily offset by the additional cost. $$$$$$. If you can put together a list of committed buyers (as in ten people ready to put a deposit down) I'll look into it.
#9
Super Member
Join Date: May 2008
Location: Baton Rouge, La.
Posts: 953
Likes: 0
Received 0 Likes
on
0 Posts
Steel Gray 09' C63 AMG
#12
Almost a Member!
Join Date: Aug 2008
Posts: 33
Likes: 0
Received 0 Likes
on
0 Posts
MTM AUDI TT October Built C63 AMG Palladium Silver. PP ,CF,Alcantara Steering wheel
here is the first one ready to put down the deposit(seriously)...come on guys lets put on some titanium on our cars along with the carbon
![Smilie](https://mbworld.org/forums/images/smilies/smile.gif)
#13
Super Member
Join Date: May 2008
Location: Baton Rouge, La.
Posts: 953
Likes: 0
Received 0 Likes
on
0 Posts
Steel Gray 09' C63 AMG
Other than the header(s) upgrade over the OEM log manifolds(s) is there are increase in power/ torque with an exhaust upgrade. Do any of the name brand tuners offer an exhaust upgrade yet with dyno numbers to back it up? If there is no real power upgrade from the exhaust system whats the point of hacking the OEM system up for? More noise, I'll pass.
-Troy
-Troy
#14
Other than the header(s) upgrade over the OEM log manifolds(s) is there are increase in power/ torque with an exhaust upgrade. Do any of the name brand tuners offer an exhaust upgrade yet with dyno numbers to back it up? If there is no real power upgrade from the exhaust system whats the point of hacking the OEM system up for? More noise, I'll pass.
-Troy
-Troy
I'll post clips, and dyno/track results so everyone can decide for themselves if the gains are worth it or not.
Thanks
#15
Junior Member
Join Date: Jul 2008
Location: Baton Rouge, Louisiana
Posts: 68
Likes: 0
Received 0 Likes
on
0 Posts
09 c63
I can't speak for anyone else but after throwing mine up on a lift and inspecting the exhaust there is definitely room for improvement. Larger diameter tubing, mandrel bends (instead of the dented factory pieces around the diff), a true X-pipe, removal of the secondary cats, and longtubes should all add up to some decent power. Our goal is to retain the factory tips (which everyone loves including me) and not blow your eardrums out while still picking up power.
I'll post clips, and dyno/track results so everyone can decide for themselves if the gains are worth it or not.
Thanks
I'll post clips, and dyno/track results so everyone can decide for themselves if the gains are worth it or not.
Thanks
![thumbs](https://mbworld.org/forums/images/smilies/thumbsup.gif)