SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

SL/R230: SL500 ECU upgrade

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Sep 29, 2010 | 05:24 PM
  #1  
Rook3300's Avatar
Thread Starter
Member
 
Joined: Dec 2008
Posts: 244
Likes: 1
From: Louisiana
2005 SL500
SL500 ECU upgrade

Ok, I've been on these boards for over 2 years now and have not seen anyone chime in on an ECU upgrade for the old stand-by 5.0L engine. It seems that I'll have mine for a while (the trade-in values are apparently in the crapper) and would like to eek out a little performance boost for my baby.

I've been looking at the Veloce Performance ECU upgrade. Supposedly bumps up power from the stock 302hp to about 335hp or so. Has anyone ever gotten a tune on their SL500? Does it make a difference at all?

Thanks!

-ROOK
Reply
Old Sep 29, 2010 | 07:11 PM
  #2  
NCE500's Avatar
Super Member
 
Joined: Apr 2006
Posts: 796
Likes: 0
From: Raleigh NC
2007 E63, 2006 C55
RE: ECU Upgrade

Most of the aftermarket vendors make a chip upgrade for your engine, but the gains will probably not be huge, maybe 20 hp/20 torque. Whether that is worth the cost and effort is a personal decision.

Eurocharged, Powerchips, Kleemann, Renntech all have ECU upgrades for your car. I have had very good results with Eurocharged in my SL600. I'd suggest that you shop them all and see what works best for you.
Reply
Old Sep 30, 2010 | 01:08 AM
  #3  
Rook3300's Avatar
Thread Starter
Member
 
Joined: Dec 2008
Posts: 244
Likes: 1
From: Louisiana
2005 SL500
Yea, I've taken a look at what's out there. I just want to see if anyone else has done anything to their 5.0L engines. If I were dealing with an SL55 or 600 or 65, I could look at the boards and find loads of testimonials regarding ECU and even TCU tunes for those. I haven't found one for the 5.0L engine.

With regards to the performance-per-dollar. I'd rather start off at the lower point (approx $1100 for tune, for 20hp = $55/hp) before I jump into the deep end of the pool (approx $13K-$15 for supercharger, install & tune, for 150hp = $85-$100/hp). But before I do, I'm just looking for some actual person who has actually purchased an actual ECU tune on the 5.0L V8.

I'm not quite satisfied with the power my SL500 makes and am looking to take it to the next level. I'll either have to take matters into my own hands (tuning) or wait till the market bounces back to trade up (which could take a long while at this rate).

-ROOK
Reply
Old Oct 3, 2010 | 02:38 PM
  #4  
IngenereAMG's Avatar
MBWorld Fanatic!
 
Joined: Feb 2004
Posts: 3,703
Likes: 5
From: Arizona
SL55AMG, Ferrari 348, Ferrari Testarossa, Ferrari F40, Ferrari Mondial t, Ducati 916, Indycar
We tune the 500 engine, and while the numbers themselves aren't huge, it's the way my guys develop the tuning.

We broaden the power band, remove the speed limiter and improve the throttle response in addition to bumping power by ~10%. Overall, while not turning the car's power to an AMG, it is a very nice set up, well within the design specs of the engine and very reliable.

Let me know if you have other questions.
Reply
Old Oct 9, 2010 | 07:11 AM
  #5  
Late's Avatar
Senior Member
15 Year Member
 
Joined: Oct 2009
Posts: 269
Likes: 4
From: New York
03 SL500(Sold), 09 C300, 11 E550
Originally Posted by IngenereAMG
We tune the 500 engine, and while the numbers themselves aren't huge, it's the way my guys develop the tuning.

We broaden the power band, remove the speed limiter and improve the throttle response in addition to bumping power by ~10%. Overall, while not turning the car's power to an AMG, it is a very nice set up, well within the design specs of the engine and very reliable.

Let me know if you have other questions.
Hey Dino, would your tune compensate for basic things like removing secondary cats and add a little extra power? I noticed after i got my straight pipes installed that when downshifting the RPM really hangs after hard acceleration. Also feels a little less torquey on full throttle starts.

I'm not looking to get a tune until i figure out whether i will be keeping the 500 or trading it in for an m6 but this might persuade me
Reply
Old Oct 28, 2013 | 01:38 AM
  #6  
SL4Life's Avatar
Senior Member
 
Joined: May 2012
Posts: 263
Likes: 1
On my 3rd coupe!
Originally Posted by IngenereAMG
We tune the 500 engine, and while the numbers themselves aren't huge, it's the way my guys develop the tuning.

We broaden the power band, remove the speed limiter and improve the throttle response in addition to bumping power by ~10%. Overall, while not turning the car's power to an AMG, it is a very nice set up, well within the design specs of the engine and very reliable.

Let me know if you have other questions.
I know this thread is old but if it's still alive please pm the cost for the 500ecu upgrade. Thanks
Reply
Old Oct 28, 2013 | 12:28 PM
  #7  
heylifeisshort's Avatar
Junior Member
 
Joined: Apr 2013
Posts: 34
Likes: 0
2004 SL600
Not worth it for an NA motor

Originally Posted by Rook3300
Ok, I've been on these boards for over 2 years now and have not seen anyone chime in on an ECU upgrade for the old stand-by 5.0L engine. It seems that I'll have mine for a while (the trade-in values are apparently in the crapper) and would like to eek out a little performance boost for my baby.

I've been looking at the Veloce Performance ECU upgrade. Supposedly bumps up power from the stock 302hp to about 335hp or so. Has anyone ever gotten a tune on their SL500? Does it make a difference at all?

Thanks!

-ROOK
This is just my personal opinion, so no flames please: For a naturally-aspirated motor, an expensive ECU tune is just not worth it. The gains to be had don't justify the costs. Even combined with other bolt-ons, the $/HP is still very high. I suggest you look into upgrading the vehicle to a super/turbocharged version. You may get far more bang for your buck, and you will have instant satisfaction. The upgrade alone will cure your desire for more power, and if you want more after that, then tuning a super/turbocharged motor will yield much greater gains than an NA motor for the money. Again, just the opinion of a guy who watches his pennies and has been tuning vehicles for 24 years.
Reply
Old Oct 28, 2013 | 01:05 PM
  #8  
Benz-O-Rama's Avatar
MBWorld Fanatic!
 
Joined: Apr 2006
Posts: 8,137
Likes: 27
From: Maryland
Eurocharged 2004 E500, Eurocharged ECU/TCU 2005 SL600, 2010 Caddy SwaggerWagon
I have a Eurocharged tune on my E500 (Same engine) and it's run hiccup free for over 100K miles. I added shorty log style VRP HEM's, and some other minor exhaust work, etc... and promptly ran an 13.49@102.5. Not bad, considering the platform.

At the time, I paid $800 for the tune, but now... pfft..... the price is peanuts for a 500.
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

10 Coolest Mercedes-Benz Wagons of All Time

 Verdad Gallardo
story-1

New Mercedes-AMG SUVs Arrive With NEW V8 Engine: 12 Things You Need to Know

 Verdad Gallardo
story-2

8 Oddball Mercedes Ideas That Actually Made it to Production

 Verdad Gallardo
story-3

Dubai Tuner Gives the Mercedes G-Class An Entirely New Look

 Verdad Gallardo
story-4

Six Gift Ideas Your AMG Loving Dad or Grad Will Cherish

 
story-5

7 Craziest Things AMG Gas Ever Built

 Verdad Gallardo
story-6

New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

 Verdad Gallardo
story-7

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

 Verdad Gallardo
story-8

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

 Verdad Gallardo
story-9

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

 Verdad Gallardo
Old Oct 28, 2013 | 04:39 PM
  #9  
Bigsnake's Avatar
Junior Member
 
Joined: Mar 2013
Posts: 35
Likes: 0
From: Sweden
MB SL500 R230
Hi. I have a 2003 SL5oo and I have reprogramed my ECU. I've got 31 Hp more and 48 torque. But the big deferens was the throttle response and the gear changes. It holds the gears longer, sometimes to long. It takes 1-2 sec before it changes up a gear after you lift off the throttle. sometimes that can be a problem if you want to lower your speed discreetly after you spot a police car behind you.

Mercedes Modell:SL class 230 - Engine 5.0L 225kW / 306HK 460Nm (2001 - 2006) V8 24V M113
Ecotrim
Effect (kW)225 kW+18 kW. (HK)306 HK+24 HK
Torque Nm+37 (497 Nm) at 4250 rpm
Stag 1
(243 kW)+23 kW (248 kW). (330 HK)+31 HK
Torque +46 Nm(506 Nm) at 4250 rpm

Last edited by Bigsnake; Oct 28, 2013 at 04:49 PM.
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 02:04 PM.

story-0
10 Coolest Mercedes-Benz Wagons of All Time

Slideshow: These estates prove you don't need extra ride height to have performance, style, and everyday usability.

By Verdad Gallardo | 2026-06-23 14:16:58


VIEW MORE
story-1
New Mercedes-AMG SUVs Arrive With NEW V8 Engine: 12 Things You Need to Know

Slideshow: Mercedes-AMG's updated GLE 63 S and GLS 63 bring a new-generation V8, subtle design revisions, and familiar supercar-rivaling performance figures.

By Verdad Gallardo | 2026-06-17 12:52:51


VIEW MORE
story-2
8 Oddball Mercedes Ideas That Actually Made it to Production

Slideshow: Mercedes has never been afraid to experiment, and some of its strangest ideas turned out to be surprisingly successful.

By Verdad Gallardo | 2026-06-10 17:43:40


VIEW MORE
story-3
Dubai Tuner Gives the Mercedes G-Class An Entirely New Look

Sideshow: A Middle Eastern tuner has transformed the Mercedes-AMG G 63 into an open-top special, replacing nearly every exterior panel in the process.

By Verdad Gallardo | 2026-06-10 15:29:50


VIEW MORE
story-4
Six Gift Ideas Your AMG Loving Dad or Grad Will Cherish

Slideshow: Six gift ideas your AMG loving dad or grad will cherish.

By | 2026-06-03 17:26:18


VIEW MORE
story-5
7 Craziest Things AMG Gas Ever Built

Slideshow: Sometimes AMG builds fast sedans. Other times, it builds twin-turbo V12 land missiles and six-wheeled off-road monsters.

By Verdad Gallardo | 2026-05-26 17:59:58


VIEW MORE
story-6
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

Slideshow: Mercedes-AMG's new electric GT 4-Door Coupe trades combustion for software, synthetic noise, and more than 1,100 horsepower.

By Verdad Gallardo | 2026-05-20 20:08:15


VIEW MORE
story-7
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-8
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-9
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