06' S65 exhaust question
Thread Starter
Super Member
Joined: Jul 2007
Posts: 783
Likes: 13
2006 s65. Ford Excursion 6.0. Pontiac GTO convertible. Porsche 944 Turbo SCCA car. Wife-E550 and 968
06' S65 exhaust question
Does anyone know why there is a restriction in the right exhaust pipe about 3/4ths of the way down the car towards the mufflers? Did the MB engineers decide that the car needed some increased backpressure to spool the turbos or something? Would removing it help/hurt power? And same question about mufflers... does removing them help or hurt power? I have heard conflicting advice about backpressure in exhaust systems on Turbo cars. Some guys say less helps the turbos spool quicker. Some say the opposite. Any thoughts?
Super Member
Joined: Nov 2003
Posts: 881
Likes: 55
From: Mechanicsville, VA
'09 CLK550, '18 AMG GTR, '06 C55 AMG, '25 GLS450, 09 E63
Does anyone know why there is a restriction in the right exhaust pipe about 3/4ths of the way down the car towards the mufflers? Did the MB engineers decide that the car needed some increased backpressure to spool the turbos or something? Would removing it help/hurt power? And same question about mufflers... does removing them help or hurt power? I have heard conflicting advice about backpressure in exhaust systems on Turbo cars. Some guys say less helps the turbos spool quicker. Some say the opposite. Any thoughts?
Junior Member
Joined: Jan 2010
Posts: 24
Likes: 1
From: Billerica, MA
S65 & 996TT
I wanted it a bit louder, so I just cut the mufflers off. Makes a great sound, but isn't overly loud at all for a DD.
http://forums.yuppieracing.net/showthread.php?t=3998
http://forums.yuppieracing.net/showthread.php?t=3998
Thread Starter
Super Member
Joined: Jul 2007
Posts: 783
Likes: 13
2006 s65. Ford Excursion 6.0. Pontiac GTO convertible. Porsche 944 Turbo SCCA car. Wife-E550 and 968
I wanted it a bit louder, so I just cut the mufflers off. Makes a great sound, but isn't overly loud at all for a DD.
http://forums.yuppieracing.net/showthread.php?t=3998
http://forums.yuppieracing.net/showthread.php?t=3998
Any idea if cutting the mufflers out f's up the backpressure for turbos at all? Z
Junior Member
Joined: Jan 2010
Posts: 24
Likes: 1
From: Billerica, MA
S65 & 996TT
Back pressure seems to be unchanged. I had the car on the dyno AFTER I made the exhaust mod, and it performed outstanding (522HP & 608TQ), and was still building more power as it hit the rev limiter.
You need to get on Yuppeiracing.net man! You're local!!
