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

Renntech CL 55 Stage 6

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Old Jun 9, 2006 | 04:13 PM
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SL55 AMG, 2006 Range Rover Sport with Kahn Design Package
Renntech CL 55 Stage 6

Hello guys,

Just one pic (teaser) of Stage 6 RennTECH.

Last edited by art@kronen; Apr 11, 2007 at 10:08 PM.
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Old Jun 9, 2006 | 04:36 PM
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so stage 6 includes what? how fast? 1/4mile time....i heard there is a 9second cl55 in texas
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Old Jun 9, 2006 | 05:29 PM
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The CF is pretty, but like Bux, I'd rather hear about the numbers.
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Old Jun 9, 2006 | 06:41 PM
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Originally Posted by DFW01E55
The CF is pretty, but like Bux, I'd rather hear about the numbers.
Those cf bits cover up ture SLR style top mount intercoolers to replace the bs junk these 55k cars come with from the factory.

Dont see manycars running around with those these days
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Old Jun 9, 2006 | 06:44 PM
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SL55 AMG, 2006 Range Rover Sport with Kahn Design Package
Numbers

0 - 60 mph : 4 secs
1/4 time : 11.5 secs
Trap speed: 125 mph
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Old Jun 9, 2006 | 06:48 PM
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Originally Posted by adam@kronen
0 - 60 mph : 4 secs
1/4 time : 11.5 secs
Trap speed: 125 mph
125 mph? Seems very very high!!
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Old Jun 9, 2006 | 06:51 PM
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SL55 AMG, 2006 Range Rover Sport with Kahn Design Package
Yup, thats the numbers i got from the RT team.
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Old Jun 9, 2006 | 06:51 PM
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Originally Posted by adam@kronen
0 - 60 mph : 4 secs
1/4 time : 11.5 secs
Trap speed: 125 mph
They have not made to many Stage 6 cars so is this the car from the Super Tuner Shootout? Is it Horizon Blue?

Love that car. That is how a 5.5L amg V8k car should be modded!!!

Thanks
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Old Jun 9, 2006 | 07:06 PM
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How much rwhp/crank is this Stage 6 putting out?
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Old Jun 9, 2006 | 07:07 PM
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SL55 AMG, 2006 Range Rover Sport with Kahn Design Package
They have not made to many Stage 6 cars so is this the car from the Super Tuner Shootout? Is it Horizon Blue?

Love that car. That is how a 5.5L amg V8k car should be modded!!!

Thanks
Yes it is. It was 2 years ago when you last saw it. A lot has changed since then. A member of the forum (W211) might replace his K4 for a full RT Stage 6

Right now we have three Stage 6 cars.

CLS 55 Stage 6 (Miami)
CL 55 Stage 6 (Miami)
SL 55 Stage 6 (Scottsdale)
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Old Jun 9, 2006 | 07:36 PM
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Originally Posted by adam@kronen
Yes it is. It was 2 years ago when you last saw it. A lot has changed since then. A member of the forum (W211) might replace his K4 for a full RT Stage 6

Right now we have three Stage 6 cars.

CLS 55 Stage 6 (Miami)
CL 55 Stage 6 (Miami)
SL 55 Stage 6 (Scottsdale)
Know all about thta CL its an amazing car.
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Old Jun 10, 2006 | 03:39 AM
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WOW can't wait to hear more. the renntech airbox looks very different than the normal "V8 Kompressor Intake". is this a new replacement version, a new part, or just part of the stage 6 conversion? looks incredible.
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Old Jun 10, 2006 | 02:02 PM
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Can you post pics of the CLS 55 Stage 6?
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Old Jun 10, 2006 | 03:17 PM
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SL55 AMG, 2006 Range Rover Sport with Kahn Design Package
Can you post pics of the CLS 55 Stage 6?
The CLS 55 stage 6 is driven by Hartmut (Renntech CEO and founder) right now. I will probably request some pictures later today. I have the SL 55 pictures from Dyno Comp (Scottsdale) pretty soon.
From what i heard, Stage 6 is pushing high 600. Will be confirmed later.

WOW can't wait to hear more. the renntech airbox looks very different than the normal "V8 Kompressor Intake". is this a new replacement version, a new part, or just part of the stage 6 conversion? looks incredible.
The Stage 6 includes stage 5 + 2 intercoolers, intake manifold, air intake, and the air filter housing.

Last edited by art@kronen; Jun 10, 2006 at 03:21 PM.
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Old Jun 10, 2006 | 03:54 PM
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Originally Posted by adam@kronen
The Stage 6 includes stage 5 + 2 intercoolers, intake manifold, air intake, and the air filter housing.
awesome. i always had a hunch that there is power to be made with the induction system, notably the intake manifold and the intake geometry. the airbox is beautiful. does it house slr-style intercoolers? and lastly, more pics please! also, side note but do you guys just sell/install parts/conversions or do you do mercedes maintenance too? thanks
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Old Jun 10, 2006 | 05:49 PM
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SL55 AMG, 2006 Range Rover Sport with Kahn Design Package
Yes, it is SLR style intercoolers. Hence, the factory airbox cannot be used in this case.

do you guys just sell/install parts/conversions or do you do mercedes maintenance too
We sell and install performance and aerodynamics parts for MB and we also do Mercedes maintanence. (oil change, etc)

Pictures of the SL 55 Stage 6 will be available on Monday pm. Hopefully.

Last edited by art@kronen; Jun 10, 2006 at 05:56 PM.
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Old Jun 10, 2006 | 11:47 PM
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what does the stage 6 cost installed/tuned?
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Old Jun 11, 2006 | 03:29 AM
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SL55 AMG, 2006 Range Rover Sport with Kahn Design Package
Stage 6 (the works) - $35995
Headers, larger crankshaft pulley, SLR styled intercooler system, air intake, air filter housing, ECU software upgrade, throttle body.

Again, i am sorry guys i couldnt get more pictures as fast as i would like. Please be patient.
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Old Jun 11, 2006 | 09:47 AM
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Originally Posted by JamE55
How much rwhp/crank is this Stage 6 putting out?
............good question, but don't expect to see an answer. Too much tuner hot air. You won't see a time slip and you won't see a dynograph.

Ted
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Old Jun 11, 2006 | 06:44 PM
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Originally Posted by Ted Baldwin
............good question, but don't expect to see an answer. Too much tuner hot air. You won't see a time slip and you won't see a dynograph.
Here are the Dyno graphs for the S/C 55k from the Renntech website. I cannot say how realistic the numbers are, but the gains for some tuning parts are relatively modest (throttle body and airbox for instance). The new intercoolers seem to give a huge boost in HP. Numbers all reflect wheel measurements; multiply by 1.23 to give the crank numbers.

As I study these graphs while contemplating engine upgrades for my CLS55, the biggest impact comes from stage 1 (ECU & Pulley, +51 hp, +38 torque) and then the stage 6 addition of the larger intercoolers (+51 hp, +8 torque). Airbox alone +15 hp, +14 torque; headers alone +24hp, +30 torque; airbox + headers +30 hp, +34 torque; larger throttle body +7 hp, +14 torque. I just derived these numbers from the graphs and I cannot attest to their accuracy in a real life vehicle, but it still shows the relative gains from each modification.

Cost of the stage 6 seems to be about double that of Kleemann stage 4. Kleemann doesn't offer the larger intercoolers but does change out the crankshaft, which Renntech seems to leave alone.

Despite the prodigious power of the supercharged 55k engine in the stock cars, there is a lot of untapped reserve if you want to spend the cash. This is one reason I went for a CLS55 rather than wait for a CLS63, even though I may or may not ever do any engine upgrades.












Last edited by Heisenberg; Jun 11, 2006 at 07:23 PM.
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Old Jun 11, 2006 | 08:15 PM
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So for about $36,000.00 you can get 536rwph? I think the secret is in the larger intercoolers they provide. Thanks for posting the dynos.
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Old Jun 11, 2006 | 08:20 PM
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Originally Posted by ekovalsky
Here are the Dyno graphs for the S/C 55k from the Renntech website. I cannot say how realistic the numbers are, but the gains for some tuning parts are relatively modest (throttle body and airbox for instance). The new intercoolers seem to give a huge boost in HP. Numbers all reflect wheel measurements; multiply by 1.23 to give the crank numbers.

As I study these graphs while contemplating engine upgrades for my CLS55, the biggest impact comes from stage 1 (ECU & Pulley, +51 hp, +38 torque) and then the stage 6 addition of the larger intercoolers (+51 hp, +8 torque). Airbox alone +15 hp, +14 torque; headers alone +24hp, +30 torque; airbox + headers +30 hp, +34 torque; larger throttle body +7 hp, +14 torque. I just derived these numbers from the graphs and I cannot attest to their accuracy in a real life vehicle, but it still shows the relative gains from each modification.

Cost of the stage 6 seems to be about double that of Kleemann stage 4. Kleemann doesn't offer the larger intercoolers but does change out the crankshaft, which Renntech seems to leave alone.

Despite the prodigious power of the supercharged 55k engine in the stock cars, there is a lot of untapped reserve if you want to spend the cash. This is one reason I went for a CLS55 rather than wait for a CLS63, even though I may or may not ever do any engine upgrades.












...........You are making my point. Those graphs CANNOT be for the car that traps at 125mph as posted earlier. if you are to accept what was posted earlier that the car traps at 125mp......if you use a simple HP calculator then the owner of the car who's graph you've posted deserves a refund. The curb weight for a CL55 is 4300lbs, if you add a modest 50Lbs for the mods and 150lbs for the driver, that brings the weight to 4500. If you calculate HP using the trap speed method, then the CL55 with a trap speed of 125mph should be malking 686HP and 823Lbft of torque to THE REAR WHEELS!!!

...........if you use the 1/4 mile time method then you get 585HP and 702Lbft of torque AT THE REAR WHEEL!!

...........first of all, you can see how to spot nonsense........the trap speed and the 1/4 mile methods do not even match.

.................Here is a web page containing how to do the calculations. Try them yourself http://www.cprparts.com/HPcalculator.html

Ted

Last edited by Ted Baldwin; Jun 11, 2006 at 08:26 PM.
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Old Jun 12, 2006 | 12:28 PM
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Originally Posted by Ted Baldwin
............good question, but don't expect to see an answer. Too much tuner hot air. You won't see a time slip and you won't see a dynograph.

Ted
Well in the super tuner shootout the CL55 was quicker than the Kleemann SL55 wich had every go fast part Kleemann offered. RENNtech does not post 1/4 times but neither does Brabus, Kleemann... or any of the reputable tuners.

This car is not hot air...in reality its pumping a whole not more cold air than any other tuners car being that no one else has desiged a intercooler box like that. The junk seen in these AMG cars fromt he factory is just not up to the job and that SLR style box flows far better than stock and has less pressure drop due to resistance when flowing air through the cooler.

Last edited by CynCarvin32; Jun 12, 2006 at 12:40 PM.
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Old Jun 12, 2006 | 12:39 PM
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Originally Posted by Ted Baldwin
...........You are making my point. Those graphs CANNOT be for the car that traps at 125mph as posted earlier. if you are to accept what was posted earlier that the car traps at 125mp......if you use a simple HP calculator then the owner of the car who's graph you've posted deserves a refund. The curb weight for a CL55 is 4300lbs, if you add a modest 50Lbs for the mods and 150lbs for the driver, that brings the weight to 4500. If you calculate HP using the trap speed method, then the CL55 with a trap speed of 125mph should be malking 686HP and 823Lbft of torque to THE REAR WHEELS!!!

...........if you use the 1/4 mile time method then you get 585HP and 702Lbft of torque AT THE REAR WHEEL!!

...........first of all, you can see how to spot nonsense........the trap speed and the 1/4 mile methods do not even match.

.................Here is a web page containing how to do the calculations. Try them yourself http://www.cprparts.com/HPcalculator.html

Ted
while I have no background for using formula's to back a car into a 1/4 mile time it should be stated that RENNtech does not post figues for the 1/4 time for any of their cars. They don't want to get involved with that likely because to many factors go into what makes the perfect 1/4 time.

The figure given by Adam might have been a guess. But the CL55, CLS55, and SL55 with these upgrades are extremely quick and offer the best cooling system seen for the 55k vehicles.

As someone who has had many a track day destroyed (road racing) because the factory intercooler system on these Kompressor cars (v6 and v8) just cant keep up with even a lightly modified car I can really appreciate the work done on those SLR style coolers. Pumps and upgraded additional coolers are nice but the fact still remains that the factory cooler in the V of the engine is just not all that great. Having said that, the cooler made by RENNtech is almost like art.

Most people wont need a cooler like that but for the customers who do demand a car that has very controlled intake temps it is really the only option.
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Old Jun 12, 2006 | 02:00 PM
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SL55 AMG, 2006 Range Rover Sport with Kahn Design Package
More pictures.

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