CL-Class (W215) 2000-2006: CL 500, CL 600

Few questions regarding the v12tt

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Jun 23, 2014 | 08:51 PM
  #1  
Boost4Breakfast's Avatar
Thread Starter
Newbie
 
Joined: Jun 2013
Posts: 4
Likes: 0
04 Audi S4, 06 infiniti g35 sport coupe, some others ;)
Few questions regarding the v12tt

Im looking a picking up a sl600. I will be modifying it quite a bit as i cant leave anything stock. I have some questions that are hard to find a direct answer:
1) does the v12 indeed have forged pistons?

2) has anyone tried clipping the turbine wheels on the turbochargers to increase flow and reduce drive pressure and reversion?

3) what are actual size of the oem injectors?

4) are the factory o2 sensors narrowband (0-1v) or wideband (0-5v)?

5)does anyone know (tuners chime in here) if the mafs operate in series or parallel?

6) what parameters trigger overboost cel? (Ie. maf voltage or map voltage)

7) has anyone actually logged drive pressure:boost pressure ratio?
Reply
Old Jun 23, 2014 | 11:45 PM
  #2  
BlownV8's Avatar
MBWorld Fanatic!
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 2003
Posts: 8,882
Likes: 1,212
From: In my garage
E55, GLS450, GL63, GLE350
1) does the v12 indeed have forged pistons?
Don't believe the 600 has forged pistons.

2) has anyone tried clipping the turbine wheels on the turbochargers to increase flow and reduce drive pressure and reversion?
The modificiation is typically to machine the turbo to accept a larger wheel for more boost.

5)does anyone know (tuners chime in here) if the mafs operate in series or parallel?

Neither, it runs MAP.

6) what parameters trigger overboost cel? (Ie. maf voltage or map voltage)
Boost is controlled electronically.

7) has anyone actually logged drive pressure:boost pressure ratio?
Many have data logged.
Reply
Old Jun 24, 2014 | 12:55 AM
  #3  
Boost4Breakfast's Avatar
Thread Starter
Newbie
 
Joined: Jun 2013
Posts: 4
Likes: 0
04 Audi S4, 06 infiniti g35 sport coupe, some others ;)
Blown, thanks for a quick reply and input. I would still like others input as well. In regards to #6, id like more info on the resolution of the map (ie. 4 bar, 5 bar). Any extra info on any other # is appreciated.
I have some modifications planned out if i pick the sl600 up.
Reply
Old Jun 24, 2014 | 01:05 AM
  #4  
Boost4Breakfast's Avatar
Thread Starter
Newbie
 
Joined: Jun 2013
Posts: 4
Likes: 0
04 Audi S4, 06 infiniti g35 sport coupe, some others ;)
What kind of drive pressure are people seeing?
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


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


All times are GMT -4. The time now is 04:18 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