CL55 AMG, CL65 AMG, CL63 AMG (C215, C216) 2000 - 2014 (Two Generations)

645 WHP CL65!!!

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Jul 21, 2014 | 06:53 PM
  #1  
RaceHorse's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Photogenic
 
Joined: Jan 2011
Posts: 1,181
Likes: 59
CL65
645 WHP CL65!!!



Careful cutting with a sawzall, not for everyone.






Soft flex mock up.


Tell me what you think!!! I have recently added some catless downpipes and the stock airboxes just couldn't cut it anymore. Higher rpms the car didn't feel itself. Also, ended up with a CEL which was no surprise. Code came up for the obvious, rear O2s.

Along with everyone else looking to make a cold air intake, I was able to get some parts together and set up a dyno session. I started with 2.25" to 4" reducers with a 2" sheet metal ring inside. This allowed me to oval the silicone fittings and have something to tighten the hose clamps up against. The problem is trying to attach to the tiny lip on the radiator. I finished up on Saturday and I only had very soft 4" flex that was collapsing around 3k rpms. Since I was set up to dyno sunday morning, I ended up adding 4" hard elbows off the fittings and attached the cone filters. This was the closest I could provide to the finished product last minute, and I was very happy with the results.

I will end up having silicone fittings to the radiator and then hard pipe to cone filters up front. K&N RU-3130 filters, are not the biggest and not the smallest. They were in stock at Advanced Auto which made it easy to test fit. Keep in mind to fit they still required trimming the back of the grill and cutting away at the bumper support.

The funny thing is CEL went off after putting cone filter setup on. After a few dyno pulls no issues since.

I will provide more pics once I'm done. As you can see getting air in and out of the turbos makes a big difference.

Last edited by RaceHorse; Jul 21, 2014 at 06:57 PM.
Reply
Old Jul 21, 2014 | 07:32 PM
  #2  
Dr Matt's Avatar
MBWorld Fanatic!
 
Joined: Aug 2013
Posts: 1,077
Likes: 80
From: Anchorage
05 CL65
Sweet! Congratulations, nice to see you could make that kind of power through those little filters. I am hoping to get back on the dyno to get my AFR corrected soon, but without the downpipes I won't match your #'s.
Reply
Old Jul 21, 2014 | 07:46 PM
  #3  
RaceHorse's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Photogenic
 
Joined: Jan 2011
Posts: 1,181
Likes: 59
CL65
Those filters are 3.5" inlet but I put the 4" flex on the outside and it fits snug. They are 7" long and 4.75" diameter on the large end. Even after cutting away at the grille they are still getting bent a little. I would like to have a mesh grille that sits out flush with the hood allowing for more space and larger openings, although seeing the filters would look cheap.
Reply
Old Jul 21, 2014 | 07:48 PM
  #4  
Dr Matt's Avatar
MBWorld Fanatic!
 
Joined: Aug 2013
Posts: 1,077
Likes: 80
From: Anchorage
05 CL65
What fuel is the tune for/on?
Reply
Old Jul 21, 2014 | 08:07 PM
  #5  
RaceHorse's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Photogenic
 
Joined: Jan 2011
Posts: 1,181
Likes: 59
CL65
Originally Posted by Dr Matt
What fuel is the tune for/on?
In NY we have 93 octane . I don't know if they make a different tune for 93 as opposed to 91 in other places, but its not a 100 octane tune. This was the same tune since last September.
Reply
Old Jul 21, 2014 | 08:40 PM
  #6  
Need4Speed's Avatar
Former Vendor of MBWorld
 
Joined: May 2013
Posts: 13,059
Likes: 50
From: Glendale, CA
2018 C63S
beast !
Reply
Old Jul 21, 2014 | 08:53 PM
  #7  
Thericker's Avatar
MBWorld Fanatic!
 
Joined: Feb 2004
Posts: 9,155
Likes: 20
From: Southern, CA.
V12-Biturbo
Nice! Looks NASA approved.. It would be interesting if you added pure ms 109 then redyno, then dyno tune specifically for 109.. I've seen 15-20 whp by JUST adding 109 to these v12tt's turbs luv it regardless of tune..

Curious since you mentioned running same tune & only mod was CAI & down pipes what were the old dyno #'s before these integral mods? Thnx!

Last edited by Thericker; Jul 21, 2014 at 08:58 PM.
Reply
Old Jul 21, 2014 | 10:45 PM
  #8  
Grip Grip's Avatar
MBWorld Fanatic!
15 Year Member
Photogenic
Photoriffic
Liked
 
Joined: Mar 2011
Posts: 1,008
Likes: 8
From: Nashville, TN
SLK55 AMG - Renntech Supercharged
Wow, great numbers. Apparently these cars are breathing through straws.

Last edited by Grip Grip; Jul 25, 2014 at 06:55 PM. Reason: grip grip
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

 Verdad Gallardo
story-1

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-2

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-3

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-4

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
story-5

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

 Verdad Gallardo
story-6

Mercedes EQS Gets A Major Update: Everything You Need to Know

 Verdad Gallardo
story-7

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

 Verdad Gallardo
story-8

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

 Verdad Gallardo
story-9

10 Most Reliable Mercedes-Benz Models You Can Buy Used

 Verdad Gallardo
Old Jul 22, 2014 | 07:58 AM
  #9  
RaceHorse's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Photogenic
 
Joined: Jan 2011
Posts: 1,181
Likes: 59
CL65
Previous Dyno with same tune was 562 whp. That was with stock downpipes and air boxes in closer to 90 weather. It was higher 70s for this pull. First decent pull was 636whp then 638 whp 5 mins later. After 15 minute cool down this 645 came out and I was happy. I'm sure MS 109 and a 45 degree track day would give some nice times with a little extra power.
Reply
Old Jul 22, 2014 | 09:49 AM
  #10  
shardul's Avatar
Former Vendor of MBWorld
iTrader: (1)
 
Joined: May 2008
Posts: 12,139
Likes: 295
From: Houston
2003 W211 E55, 2003 W220 S600
Nice Numbers!
Reply
Old Jul 22, 2014 | 03:53 PM
  #11  
TMC M5's Avatar
MBWorld Fanatic!
 
Joined: Nov 2002
Posts: 2,895
Likes: 53
From: Maryland
'14 E63S & '14 Audi SQ5
Monster #'s! That should be good for 130+mph trap speeds in good DA.
Reply
Old Jul 22, 2014 | 07:50 PM
  #12  
RaceHorse's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Photogenic
 
Joined: Jan 2011
Posts: 1,181
Likes: 59
CL65
Hey thanks for the kind words, 130+ traps would be a big jump, but I wouldn't complain if it happened. I may have to pull it out of shiny car retirement this winter. I'll bolt on the drag radials and try to move up the list before Dr. Alaska and Jody Foster fight for number 1 and 2 spots. LOL.
Reply
Old Jul 22, 2014 | 09:27 PM
  #13  
320 dreamer's Avatar
MBWorld Fanatic!
 
Joined: Sep 2008
Posts: 3,152
Likes: 0
From: murfreesboro,tn
2003 porsche 996 turbo
Originally Posted by RaceHorse
Those filters are 3.5" inlet but I put the 4" flex on the outside and it fits snug. They are 7" long and 4.75" diameter on the large end. Even after cutting away at the grille they are still getting bent a little. I would like to have a mesh grille that sits out flush with the hood allowing for more space and larger openings, although seeing the filters would look cheap.
i had a friend build me this grill for my filters when i had my slk32
Attached Thumbnails 645 WHP CL65!!!-hpim0532.jpg  
Reply
Old Jul 23, 2014 | 08:05 AM
  #14  
TwinTurboTim's Avatar
Senior Member
10 Year Member
 
Joined: Aug 2013
Posts: 296
Likes: 2
From: NE Minneapolis, MN
2006 CL65
I made the same intake though without the nasa space material and I only made 619 so congrats!
Reply
Old Jul 23, 2014 | 10:58 AM
  #15  
RaceHorse's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Photogenic
 
Joined: Jan 2011
Posts: 1,181
Likes: 59
CL65
Originally Posted by TwinTurboTim
I made the same intake though without the nasa space material and I only made 619 so congrats!
What size pipes? what size filters? Also I was able to dyno on the cooler side of summer weather at only 76 degrees. Maybe all little things add up...Then again dyno numbers are just numbers.
Reply
Old Jul 23, 2014 | 11:19 AM
  #16  
TwinTurboTim's Avatar
Senior Member
10 Year Member
 
Joined: Aug 2013
Posts: 296
Likes: 2
From: NE Minneapolis, MN
2006 CL65
Same size as the plastic pipes that go through the radiator. Cant remember if it was 3 or 3.5. I also didnt even run my filters when I dynoed it. Mine was also on 100 oct tune and I have made full catless downpipes.
Reply
Old Jul 23, 2014 | 12:16 PM
  #17  
RaceHorse's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Photogenic
 
Joined: Jan 2011
Posts: 1,181
Likes: 59
CL65
Originally Posted by 320 dreamer
i had a friend build me this grill for my filters when i had my slk32
Nice grille, that's what I had in mind, I would use black clamps to hide the connection, otherwise looks awesome.
Reply
Old Jul 23, 2014 | 12:19 PM
  #18  
RaceHorse's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Photogenic
 
Joined: Jan 2011
Posts: 1,181
Likes: 59
CL65
Originally Posted by TwinTurboTim
Same size as the plastic pipes that go through the radiator. Cant remember if it was 3 or 3.5. I also didnt even run my filters when I dynoed it. Mine was also on 100 oct tune and I have made full catless downpipes.
My downpipes are cat less as well, no 100 octane for Me, only thing I can think is a4" is around 40% more free area than the 3". Then again you ran no filters, who knows?
Reply
Old Jul 23, 2014 | 02:54 PM
  #19  
02cl55amg's Avatar
Super Member
 
Joined: Oct 2007
Posts: 741
Likes: 6
From: SIN CITY
CL65
Can't wait for 130mph traps!!!
Reply
Old Jul 23, 2014 | 03:59 PM
  #20  
V12TTenthusiast's Avatar
Super Member
 
Joined: Jul 2013
Posts: 930
Likes: 24
06 SL65AMG, 13 Tesla Model S 60kwh, 02 Jaguar S-Type 3.0, 12 S550 4 Matic, 07 E320 Bluetec, 06 LX470
Damn that's those are good numbers your 1st and 2nd pull pretty much matched mine, but I didn't think you can get 645 out of a 65 amg with catless downpipes/intake/ecu/tcu and we pretty much have the same engine mods atm

Wish I knew this before having the car under the knife again I would have tried doing a run when the car was completely cooled lol
Reply
Old Jul 23, 2014 | 05:12 PM
  #21  
Thericker's Avatar
MBWorld Fanatic!
 
Joined: Feb 2004
Posts: 9,155
Likes: 20
From: Southern, CA.
V12-Biturbo
Originally Posted by TwinTurboTim
Same size as the plastic pipes that go through the radiator. Cant remember if it was 3 or 3.5. I also didnt even run my filters when I dynoed it. Mine was also on 100 oct tune and I have made full catless downpipes.
The diameter of piping (at least where these v12tt's are concerned) benefits greatly by the largest possible fitment. OEM pipe DIA is the 2nd largest flaw coupled to insipid kramped hamster maze design of stock setup. The difference in your dyno & Racehorse could easily be chalked up to dyno settings, weather, or wheel/tire sizing setup etc etc..

Edit: Stock piping is actually 2 7/8" not 3.5" I had 3.5" SS tubing fab'd on an early cai & held it up to stock krap, it looked huge in comparo lol

Last edited by Thericker; Jul 23, 2014 at 05:30 PM.
Reply
Old Jul 24, 2014 | 10:09 AM
  #22  
kamilclk430's Avatar
MBWorld Fanatic!
 
Joined: Mar 2009
Posts: 2,630
Likes: 9
From: Chicago
W215 V12TT Build by Speedriven, W221 S550 4Matic
Awesome #s congrats
Reply
Old Jul 25, 2014 | 06:51 PM
  #23  
RaceHorse's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Photogenic
 
Joined: Jan 2011
Posts: 1,181
Likes: 59
CL65
a little progress...



Passenger side, waiting on a 4" 90 degree elbow




Passenger side from the front.


I am waiting for 2 other elbows to be delivered, with 2 additional on back order.(which may encourage me to find another supplier). The 4-3.75" I ordered for the drivers side is too loose to connect to the stock radiator opening and I will have to get a 4-3.5" 45 degree bevel. The 4-3.75"on the passenger side fit well after trimming 3/4" off the smaller end so it would slide towards the grille more and clear the coil on the 4" end. The driver side turbo inlet is on a slight angle. I'm going to try and trim a 2.25"-2.25" 45 degree short to direct it up so I can add the 2.25"-4 straight reducer then 4" 90 towards the stock opening up front.

In the end, both sides will be very similar both with 2- 45 degree bevels and a 90 degree elbow. 4" throughout with reducers at the turbo and stock openings on the radiator. The drivers side needs a little extra to straighten out and clear the ABC reservoir. I hope that helps those trying to do something similar.

On a different note, I'm starting to wonder if alot of the heat soak in a stock setup is a result of the narrow airway starving the turbos forcing more exhaust to make the same boost. Having much less restriction on both ends seems to make boost effortlessly. Ok maybe I just said the same thing as Thericker did above just with east coast words. As Grip said " like sucking through straws" LOL

Last edited by RaceHorse; Jul 25, 2014 at 06:59 PM.
Reply
Old Jul 25, 2014 | 07:06 PM
  #24  
RaceHorse's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Photogenic
 
Joined: Jan 2011
Posts: 1,181
Likes: 59
CL65
a few more to follow above



down to turbo.




down to stock radiator opening
Reply
Old Jul 27, 2014 | 08:11 PM
  #25  
V12Godspeed's Avatar
MBWorld Fanatic!
 
Joined: Mar 2004
Posts: 5,768
Likes: 5
From: South FL & NYC
Your worst nightmare...
Great numbers, your car should definitely see 130 traps!

I am amazed at how Sean (Ricker) was able to discover all this a while back and share it with us, now we could reap the benefits! Big props to everyone who has done this.
Reply


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 03:57 PM.

story-0
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE