Renntech sound pipes and CF air box with BMC filters
Thread Starter
Senior Member
Joined: May 2006
Posts: 283
Likes: 2
From: N. Cal
2008 MB CLK Black Series
Renntech sound pipes and CF air box with BMC filters
Had the sound pipes installed and I installed the Renntech air box. After having seen and installed the carbonio CF air box, I can tell you IMO the quality of the Renntech is far superior to the carbonio. However, the install requires a little more me mechanical skills. I can't believe how MB had what is essentially two filters on each intake. It must really choke the air intake.
I also purchased the Renntech ECU and will be removing tomorrow and shipping it for he flash. Can't wait to feel the difference. In power after its installed.
I also purchased the Renntech ECU and will be removing tomorrow and shipping it for he flash. Can't wait to feel the difference. In power after its installed.
Thread Starter
Senior Member
Joined: May 2006
Posts: 283
Likes: 2
From: N. Cal
2008 MB CLK Black Series
According to Renntech its 53h 30t, which includes the ECU flash, which I've purchased but have not yet sent in the ecu. I know, for the $$$ it doesn't seem like alot of HP gains, but I prefer to be conservative and not push the limits with the ECU. I feel as if Renntech puts alot of R&D into their products. Besides, I really love the sound the sound pipes make.
Todd
Todd
Junior Member
Joined: Mar 2010
Posts: 61
Likes: 0
2009 SL-63
I have the CLK Black which HG Motorsports is working on now featured in their recent post. It has the Renntech sound pipe, ECU, intake, long tube headers & throttle body.
We are going to Dyno it soon but it sure makes more power than my last CLK Black.
The sound pipe works very well. Not harsh at all in normal driving but wakes up when you get on it. I suggest the long tube headers with hi flow cats. That is where a bunch of power is made. I'm working on controlling that power now with many suspension upgrades. The Quaife differential, solid bushings, and rear camber adjustment should give more traction at the track. As Hartmut always said "these cars like allot of neg. camber".
I agree, the front end works well at the track with 2 degrees neg. camber. It's the rear that needs it and there is little adjustment except what you get lowering it but not enough. Will keep everyone posted.
We are going to Dyno it soon but it sure makes more power than my last CLK Black.
The sound pipe works very well. Not harsh at all in normal driving but wakes up when you get on it. I suggest the long tube headers with hi flow cats. That is where a bunch of power is made. I'm working on controlling that power now with many suspension upgrades. The Quaife differential, solid bushings, and rear camber adjustment should give more traction at the track. As Hartmut always said "these cars like allot of neg. camber".
I agree, the front end works well at the track with 2 degrees neg. camber. It's the rear that needs it and there is little adjustment except what you get lowering it but not enough. Will keep everyone posted.
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Newbie
Joined: May 2013
Posts: 6
Likes: 0
CLK63 Black Series
I have the CLK Black which HG Motorsports is working on now featured in their recent post. It has the Renntech sound pipe, ECU, intake, long tube headers & throttle body.
We are going to Dyno it soon but it sure makes more power than my last CLK Black.
The sound pipe works very well. Not harsh at all in normal driving but wakes up when you get on it. I suggest the long tube headers with hi flow cats. That is where a bunch of power is made. I'm working on controlling that power now with many suspension upgrades. The Quaife differential, solid bushings, and rear camber adjustment should give more traction at the track. As Hartmut always said "these cars like allot of neg. camber".
I agree, the front end works well at the track with 2 degrees neg. camber. It's the rear that needs it and there is little adjustment except what you get lowering it but not enough. Will keep everyone posted.
We are going to Dyno it soon but it sure makes more power than my last CLK Black.
The sound pipe works very well. Not harsh at all in normal driving but wakes up when you get on it. I suggest the long tube headers with hi flow cats. That is where a bunch of power is made. I'm working on controlling that power now with many suspension upgrades. The Quaife differential, solid bushings, and rear camber adjustment should give more traction at the track. As Hartmut always said "these cars like allot of neg. camber".
I agree, the front end works well at the track with 2 degrees neg. camber. It's the rear that needs it and there is little adjustment except what you get lowering it but not enough. Will keep everyone posted.
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MBWorld Fanatic!
Joined: Apr 2006
Posts: 1,063
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From: Central New Jersey
CLK63 Black, E350 Wagon, Supercharged Denali, Lotus Elise, Tesla Model 3 Dual-Motor.
-Are the long tube headers you're talking about being supplied by HG or by Renntech? All I've seen on the Renntech site are the shorty's. Also, is anyone making catless long tube headers to be used with a tune yet? Curious as to what the difference in sound is with the "sound/performance pipes" in person as it's always hard to really get any idea what anything sounds like over an internet video, especially regarding any amount of drone inside the cabin at a mellow pace in the highway. Any local cars in LA with this mod?
MachC5
Junior Member
Joined: Mar 2010
Posts: 61
Likes: 0
2009 SL-63
A street set up you can run 1.5 to 2 deg. neg. camber for fairly aggressive drivers. For track set-ups and especially slicks 3 deg. is recommended.
With such a heavy car in hard cornering, negative camber allows the tire to have a big square contact patch for optimum grip at the critical time of loading in a turn.
If you have ever seen a tire under hard cornering, they distort rolling the outer edge of the tread under reducing the contact patch. The negative camber adjusts the angle. Yes you will wear the inner side of the tread faster in normal driving but trust me Mercedes more than most, benefit from aggressive neg. camber due to their weight. Hartmut at Renntech will confirm that.
The replacement of the 24 rubber bushings in the rear suspension and the 100% locking diff. by Weistec really improves the cars handling. I drive twisty 50 to 100 mph mountain roads but track times will tell it all.
It handles very neutral now the rear gives you accurate feedback from the tires. I have always felt the rear end of the car was it's weakest link.
Maybe Jeremy Clarkson likes to slide the rear around corners out of control, I like to go around corners fast and under control !
With such a heavy car in hard cornering, negative camber allows the tire to have a big square contact patch for optimum grip at the critical time of loading in a turn.
If you have ever seen a tire under hard cornering, they distort rolling the outer edge of the tread under reducing the contact patch. The negative camber adjusts the angle. Yes you will wear the inner side of the tread faster in normal driving but trust me Mercedes more than most, benefit from aggressive neg. camber due to their weight. Hartmut at Renntech will confirm that.
The replacement of the 24 rubber bushings in the rear suspension and the 100% locking diff. by Weistec really improves the cars handling. I drive twisty 50 to 100 mph mountain roads but track times will tell it all.
It handles very neutral now the rear gives you accurate feedback from the tires. I have always felt the rear end of the car was it's weakest link.
Maybe Jeremy Clarkson likes to slide the rear around corners out of control, I like to go around corners fast and under control !
Newbie
Joined: May 2013
Posts: 6
Likes: 0
CLK63 Black Series
Thanks for the solid info. I'll be looking into getting these parts and setting this up pretty soon. Even though the car is mostly street driven, it sees so few miles that the increased wear will likely be a non issue. I imagine even if clarkson still wanted to drive the car sideways he'd be able to with a bit more control now:p
