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

SL/R230: RENNTech SL500

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Apr 13, 2004 | 12:45 AM
  #1  
Dernick's Avatar
Thread Starter
Almost a Member!
 
Joined: May 2003
Posts: 29
Likes: 0
From: Austin, TX
'05 Infiniti G35 Coupe
RENNTech SL500

About a year ago, my father bought a '03 SL500. After having it for a while, he's decided to , in his words, "make a significant performance addition". After attending the Houston Auto Show with him this past weekend, we ran by the RENNTech display and now he is seriously thinking about installing their low-boost supercharger kit.

Does anyone on here have any experience with RENNTech, or if even this kit itself? If so, what kind of performance gains (0-60, 1/4 mile) should he expect? He doesn't really understand the specifics of all the auto-lingo (I'm a sophomore ME major here at the University of Texas so i'ts kinda second nature to me), so he doesn't know exactly all the things the techs are telling him.

If anyone can shed some light on the subject for me, that would be great.
Reply
Old Apr 13, 2004 | 05:17 PM
  #2  
jl88's Avatar
Super Member
 
Joined: Nov 2001
Posts: 894
Likes: 1
Renntech actually uses the supercharger found in the AMG models. I believe they lower the boost because the internals on the 500 are not as strong as the 55. In addition, the 500 has higher compression, which cannot be paired with a high boost supercharger.

Renntech makes good stuff. Performance will be slower than the SL55 however.

Look at Kleemann's supercharger. Cheaper but better performance.

www.kleemann.dk
Reply
Old Apr 13, 2004 | 07:05 PM
  #3  
vraa's Avatar
Out Of Control!!
 
Joined: Jul 2002
Posts: 28,933
Likes: 12
The Kleemann s/c is about $11,00 plus installation. The figures are 5.00hp/473lb-ft
Reply
Old Apr 14, 2004 | 02:13 AM
  #4  
SLVRBLT43K's Avatar
Member
 
Joined: Mar 2003
Posts: 122
Likes: 0
From: Brentwood, CA
05 sl600, 06 CLS55 AMG, 1971 Cuda
Go for the Kleemann. The performance is great and the price is even better now. You can't go wrong.
Reply
Old Apr 14, 2004 | 01:39 PM
  #5  
JamE55's Avatar
Out Of Control!
20 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: Nov 2001
Posts: 21,014
Likes: 2
From: CA, NV, CO
Dernick

Best bang for your buck is Kleemann!
Reply
Old Apr 14, 2004 | 06:54 PM
  #6  
prsmith777's Avatar
Senior Member
 
Joined: Apr 2002
Posts: 255
Likes: 0
From: Alexandria, Lousiana
06 Infiniti FX35, 07 SL55
I just got my SL500 back from a Kleemann SC install and I love the power. I probably should have gotten the Sl55 to begin with, but this certainly does help.
Reply
Old Apr 15, 2004 | 10:32 PM
  #7  
vraa's Avatar
Out Of Control!!
 
Joined: Jul 2002
Posts: 28,933
Likes: 12
Re: Dernick

Originally posted by JamE55
Best bang for your buck is Kleemann!
Not only that, the guys at Evosport are the best guys to deal with.
Reply
Old Apr 27, 2004 | 10:19 AM
  #8  
Dernick's Avatar
Thread Starter
Almost a Member!
 
Joined: May 2003
Posts: 29
Likes: 0
From: Austin, TX
'05 Infiniti G35 Coupe
Re: Re: Dernick

OK, he's going for RennTech's low boost s/cer kit, which should make around 450ish HP at the crank. There are a couple of reasons he went this route. First of all, RennTech takes up every part of the Mercedes warranty that is voided by installing the s/cer. Second, there is a dealer in Houston *Mercedes of Sugarland) inwhich the owner and other managers have RennTech modified cars, kinda making them put their feet in their mouths if they tried to deny service or warranty claims. Lastly, the guy that's going to do the install is Jurgen Steiner, one of Mercedes's 'master mechanics' and one of the main guys within RennTech.

It should be ready sometime late next week.
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 May 24, 2004 | 02:17 AM
  #9  
numbahone's Avatar
Newbie
 
Joined: May 2004
Posts: 1
Likes: 0
From: honolulu
03 sl500, 12 e63s wagon
results of renntech supercharger mod?

I was wondering if you ever got this done? How's the car now?
Reply
Old May 24, 2004 | 11:17 AM
  #10  
Dernick's Avatar
Thread Starter
Almost a Member!
 
Joined: May 2003
Posts: 29
Likes: 0
From: Austin, TX
'05 Infiniti G35 Coupe
Re: results of renntech supercharger mod?

Originally posted by numbahone
I was wondering if you ever got this done? How's the car now?
We waited about a week for the parts to come in because they were missing a clutch for the supercharger. Then when it was shipped, it ended up somewhere in Alabama. I'm going down the the place today because the parts should have been in on Saturday. The mechanic doing the install has guaranteed it'll be done by mid-week.
Reply
Old May 26, 2004 | 04:37 PM
  #11  
Dernick's Avatar
Thread Starter
Almost a Member!
 
Joined: May 2003
Posts: 29
Likes: 0
From: Austin, TX
'05 Infiniti G35 Coupe
Here are some pics of the install. I took these Monday, but as of now everything is installed except the intercooler. It's going on the dyno tomorrow to be tuned and we should have it by Friday. I'll post more then.

I don't feel like uploading pics and all, so I'll just post a link to where I've posted them elsewhere...

http://www.caranddriver.com/idealbb/...7755D38A5C21BD
Reply
Old Jun 1, 2004 | 02:50 AM
  #12  
dgussin1's Avatar
Super Member
 
Joined: Mar 2004
Posts: 533
Likes: 3
From: Los Angeles, Ca
2016 GLC300 sport
Originally posted by Dernick
Here are some pics of the install. I took these Monday, but as of now everything is installed except the intercooler. It's going on the dyno tomorrow to be tuned and we should have it by Friday. I'll post more then.

I don't feel like uploading pics and all, so I'll just post a link to where I've posted them elsewhere...

http://www.caranddriver.com/idealbb/...7755D38A5C21BD
what were the dyno results? a graph would be awesome.
Reply
Old Jun 1, 2004 | 02:21 PM
  #13  
Dernick's Avatar
Thread Starter
Almost a Member!
 
Joined: May 2003
Posts: 29
Likes: 0
From: Austin, TX
'05 Infiniti G35 Coupe
Originally posted by dgussin1
what were the dyno results? a graph would be awesome.

We didn't get a chance to put it on the dyno because it took longer to finish the install than we thought, plus the fact that our mechanic when on a weeklong vacation with his family the day after we picked the car up. Not this weekend but the next one we are planning to put it on the dyno. Here's a video though of the mechanic and my dad 'attempting' to do a burnout in the garage. Too bad the traction control kicked in.

http://webspace.utexas.edu/msd3075/MOV00348.MPG

You might want to right-click and Save As because it's a pretty big file.
Reply
Old Jun 22, 2004 | 07:29 PM
  #14  
carlosfernandez's Avatar
Super Member
 
Joined: Jun 2004
Posts: 691
Likes: 0
From: Ponce Puerto Rico
SL500 2003 previous/ E350 2007 actually
Finally what happend with the car did renntech work good or not
Reply
Old Jun 23, 2004 | 10:40 AM
  #15  
Dernick's Avatar
Thread Starter
Almost a Member!
 
Joined: May 2003
Posts: 29
Likes: 0
From: Austin, TX
'05 Infiniti G35 Coupe
Originally posted by carlosfernandez
Finally what happend with the car did renntech work good or not

The car is running great. It is getting an ECU upgrade in a week or two, but other than that, I don't know much about the daily grind of it seeing as the car is in Houston and I'm in Austin right now.

When I'm hone this weekend, I'll try to get some pictures of it.
Reply
Old Jun 23, 2004 | 01:32 PM
  #16  
carlosfernandez's Avatar
Super Member
 
Joined: Jun 2004
Posts: 691
Likes: 0
From: Ponce Puerto Rico
SL500 2003 previous/ E350 2007 actually
OK

I also try to link to your C & D post but most of the photo did not down so if yu have the oportunity post it on this page
Reply
Old Jun 23, 2004 | 03:38 PM
  #17  
Dernick's Avatar
Thread Starter
Almost a Member!
 
Joined: May 2003
Posts: 29
Likes: 0
From: Austin, TX
'05 Infiniti G35 Coupe
Originally posted by carlosfernandez
OK

I also try to link to your C & D post but most of the photo did not down so if yu have the oportunity post it on this page

They should be working about 2-3 minutes after I post this. I needed the webspace that the pics were saved on for something else, but now I'll put the pics back up. Sorry.
Reply
Old Jul 1, 2004 | 05:55 PM
  #18  
carlosfernandez's Avatar
Super Member
 
Joined: Jun 2004
Posts: 691
Likes: 0
From: Ponce Puerto Rico
SL500 2003 previous/ E350 2007 actually
thanks dernick:

Looks good, did you has the time to prove the car in the highway o in a racetrack to see the average 0 to 60 or quarter mile?
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 07:32 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