SL55/63/65/R230 AMG: Drag Times B4 & After VRP825 kit
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Senior Member
Joined: Jan 2009
Posts: 307
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From: Atlanta
SL600 (1000 hp), Cayenne S, 996TT EVO GT750, F430 Spyder,A real Ford GT, 08 Gallardo Spyder
Drag Times B4 & After VRP825 kit
When its all said and done, the "games" played with the dyno numbers can certainly be manipulated but 1/4 speed is a function of HP. Granted, ETs are very dependent on traction and launching skills but speed I have found is a true measure of HP, especially if you keep track of the Density Altitude (DA).
Anyway, just as I suspected there was no real change in my speed after installing the VRP825 kit.
Before the VRP825 kit and Victors so-so tune, I had a renntech ECU/TCU flash and ran 119.5 mph (DA-1100). Yesterday, I did 120 mph (DA 1005***). I will say that Marcins intercoolers did eliminate heat soak (I did 9 runs, all same speed). Before the kit, I could not do that.
One thing I forgot to mention about Motorwerks in Detroit was that after the Texas Mile, I had to replace several panels under the car (They came off partially). Since then my tech found many panels that were not re-installed correctly and many missing sheet metal type screws that were never re-installed back by Motorwerks techs. Poor attention to detail. Just stating my experience.
ET: 11.95 With MT ET 305/35/18s @16-18 psi
60: 2.0
330: 5.3
1/8: 7.9
mph: 93.7
1000:10.2
ET: 12.9 With Falken 305/25/20 @38 psi
ET: 12.7 = @22 psi
***B/P 29.7, 96% humidity, 68 Temp.
Anyway, just as I suspected there was no real change in my speed after installing the VRP825 kit.
Before the VRP825 kit and Victors so-so tune, I had a renntech ECU/TCU flash and ran 119.5 mph (DA-1100). Yesterday, I did 120 mph (DA 1005***). I will say that Marcins intercoolers did eliminate heat soak (I did 9 runs, all same speed). Before the kit, I could not do that.
One thing I forgot to mention about Motorwerks in Detroit was that after the Texas Mile, I had to replace several panels under the car (They came off partially). Since then my tech found many panels that were not re-installed correctly and many missing sheet metal type screws that were never re-installed back by Motorwerks techs. Poor attention to detail. Just stating my experience.
ET: 11.95 With MT ET 305/35/18s @16-18 psi
60: 2.0
330: 5.3
1/8: 7.9
mph: 93.7
1000:10.2
ET: 12.9 With Falken 305/25/20 @38 psi
ET: 12.7 = @22 psi
***B/P 29.7, 96% humidity, 68 Temp.
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Joined: Feb 2004
Posts: 9,155
Likes: 20
From: Southern, CA.
V12-Biturbo
When its all said and done, the "games" played with the dyno numbers can certainly be manipulated but 1/4 speed is a function of HP. Granted, ETs are very dependent on traction and launching skills but speed I have found is a true measure of HP, especially if you keep track of the Density Altitude (DA).
Anyway, just as I suspected there was no real change in my speed after installing the VRP825 kit.
Before the VRP825 kit and Victors so-so tune, I had a renntech ECU/TCU flash and ran 119.5 mph (DA-1100). Yesterday, I did 120 mph (DA 1005***). I will say that Marcins intercoolers did eliminate heat soak (I did 9 runs, all same speed). Before the kit, I could not do that.
One thing I forgot to mention about Motorwerks in Detroit was that after the Texas Mile, I had to replace several panels under the car (They came off partially). Since then my tech found many panels that were not re-installed correctly and many missing sheet metal type screws that were never re-installed back by Motorwerks techs. Poor attention to detail. Just stating my experience.
ET: 11.95 With MT ET 305/35/18s @16-18 psi
60: 2.0
330: 5.3
1/8: 7.9
mph: 93.7
1000:10.2
ET: 12.9 With Falken 305/25/20 @38 psi
ET: 12.7 = @22 psi
***B/P 29.7, 96% humidity, 68 Temp.
Anyway, just as I suspected there was no real change in my speed after installing the VRP825 kit.
Before the VRP825 kit and Victors so-so tune, I had a renntech ECU/TCU flash and ran 119.5 mph (DA-1100). Yesterday, I did 120 mph (DA 1005***). I will say that Marcins intercoolers did eliminate heat soak (I did 9 runs, all same speed). Before the kit, I could not do that.
One thing I forgot to mention about Motorwerks in Detroit was that after the Texas Mile, I had to replace several panels under the car (They came off partially). Since then my tech found many panels that were not re-installed correctly and many missing sheet metal type screws that were never re-installed back by Motorwerks techs. Poor attention to detail. Just stating my experience.
ET: 11.95 With MT ET 305/35/18s @16-18 psi
60: 2.0
330: 5.3
1/8: 7.9
mph: 93.7
1000:10.2
ET: 12.9 With Falken 305/25/20 @38 psi
ET: 12.7 = @22 psi
***B/P 29.7, 96% humidity, 68 Temp.
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Joined: Sep 2008
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From: murfreesboro,tn
2003 porsche 996 turbo
nows a great time to sign up for eurocharged tuning session in atlanta on 12/12. tony can custom dyno tune your car and get those numbers were they should be!!
https://mbworld.org/forums/sl55-amg-...uning-day.html
https://mbworld.org/forums/sl55-amg-...uning-day.html
Thread Starter
Senior Member
Joined: Jan 2009
Posts: 307
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From: Atlanta
SL600 (1000 hp), Cayenne S, 996TT EVO GT750, F430 Spyder,A real Ford GT, 08 Gallardo Spyder
x
RenntechE55.....Sorry about that. Meant 12.7 with Falkens @ 22psi.
JAYCL600......Have a looong trip this week. I get to test "drive" my brand new 24 foot v-nose race trailer
and guess whats in it! Call u on the road.
Thericker......Victor was suppose to do a custom tune but long story short, it did not happen n I ended up with a box tune.
320 Dreamer.....I'll be there to meet everybody but without my car. The car will be out-of-state getting a "special treat".
JAYCL600......Have a looong trip this week. I get to test "drive" my brand new 24 foot v-nose race trailer
and guess whats in it! Call u on the road.Thericker......Victor was suppose to do a custom tune but long story short, it did not happen n I ended up with a box tune.
320 Dreamer.....I'll be there to meet everybody but without my car. The car will be out-of-state getting a "special treat".
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Joined: Apr 2006
Posts: 8,137
Likes: 26
From: Maryland
Eurocharged 2004 E500, Eurocharged ECU/TCU 2005 SL600, 2010 Caddy SwaggerWagon
To put your mph in some perspective, my bone stock SL600 with only a Eurocharged shelf tune, turned a max of 121mph.
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MBWorld Fanatic!
Joined: Dec 2005
Posts: 1,653
Likes: 5
From: Ann Arbor
'03 SL55
I agree with the other guys that it looks like the tune is holding you back.
You did pick up some trap speed (120 mph with +1000 DA compared to 119.5 MPH with -1000 DA) but your setup should be faster than that.
The most noticeable thing with your ET is the 60' time. It's pretty remarkable that you run a sub-12 1/4 with a 2.0s 60' time. All the R230s with low to mid 11 second 1/4 miles have 60' times in the 1.6s to 1.7s range.
Good luck!
You did pick up some trap speed (120 mph with +1000 DA compared to 119.5 MPH with -1000 DA) but your setup should be faster than that.
The most noticeable thing with your ET is the 60' time. It's pretty remarkable that you run a sub-12 1/4 with a 2.0s 60' time. All the R230s with low to mid 11 second 1/4 miles have 60' times in the 1.6s to 1.7s range.
Good luck!
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Thread Starter
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From: Atlanta
SL600 (1000 hp), Cayenne S, 996TT EVO GT750, F430 Spyder,A real Ford GT, 08 Gallardo Spyder
I agree with all the remarks. The verdict is still out as to whether the tune is the culprit. The tune was identical (supposedly) to the ones that went into the other V12TT VRP cars.
The three other possible issues still on the table are:
1. MAP sensor
2. Wastegate
3. Blow off valve
Dyno graph shows boost never gets above 17.5 if I recall correctly. Should be up to 23-24 based on tuner.
Also boost peaks at 3600 rpm and then drops off significantly.
While rare, mercedes does have a tech bulletin that talks about miscalibrated/malfunctioning turbo pressure control valves.
The three other possible issues still on the table are:
1. MAP sensor
2. Wastegate
3. Blow off valve
Dyno graph shows boost never gets above 17.5 if I recall correctly. Should be up to 23-24 based on tuner.
Also boost peaks at 3600 rpm and then drops off significantly.
While rare, mercedes does have a tech bulletin that talks about miscalibrated/malfunctioning turbo pressure control valves.
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Joined: Mar 2006
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From: Chicago
CL65
The kit makes 825 HP on a 65 engine. I'm not sure why this hasn't been explained. It should and will make less on a 600 engine. I believe the 600 engines will be well north of 750 HP once the tune is figured out.
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From: South FL & NYC
Your worst nightmare...
+1, Even though the extra 100 ponies don't come from the displacement, The turbocharger compressor wheels are larger, by how much? don't know...
Has anybody swapped out the compressor wheels on a 600 to see if this is truly the main difference???. I also know MKB seels a cam for the 600 motors, so does brabus, my thoughts are they are using the 65 camshafts and dropping it into the 600.
Has anybody swapped out the compressor wheels on a 600 to see if this is truly the main difference???. I also know MKB seels a cam for the 600 motors, so does brabus, my thoughts are they are using the 65 camshafts and dropping it into the 600.
MBWorld Fanatic!
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Posts: 5,768
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From: South FL & NYC
Your worst nightmare...
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Posts: 3,704
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From: 20854
new balance
+1, Even though the extra 100 ponies don't come from the displacement, The turbocharger compressor wheels are larger, by how much? don't know...
Has anybody swapped out the compressor wheels on a 600 to see if this is truly the main difference???. I also know MKB seels a cam for the 600 motors, so does brabus, my thoughts are they are using the 65 camshafts and dropping it into the 600.
Has anybody swapped out the compressor wheels on a 600 to see if this is truly the main difference???. I also know MKB seels a cam for the 600 motors, so does brabus, my thoughts are they are using the 65 camshafts and dropping it into the 600.
drive safe JC, talk to you soon
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From: South FL & NYC
Your worst nightmare...
, Just exploring the difference between these 2 beast, I like this type of conversation. Pictures below are from 2 V12's...
Left one is CL65 , Right one S600
Super Member
Joined: Sep 2007
Posts: 631
Likes: 2
From: Paris.
E320
+1, Even though the extra 100 ponies don't come from the displacement, The turbocharger compressor wheels are larger, by how much? don't know...
Has anybody swapped out the compressor wheels on a 600 to see if this is truly the main difference???. I also know MKB seels a cam for the 600 motors, so does brabus, my thoughts are they are using the 65 camshafts and dropping it into the 600.
Has anybody swapped out the compressor wheels on a 600 to see if this is truly the main difference???. I also know MKB seels a cam for the 600 motors, so does brabus, my thoughts are they are using the 65 camshafts and dropping it into the 600.
Brabus Do not sell Camshaft For any MB V12 Twin-turbo Engine.The only Camshafts Brabus Offers are the ones Found in Their 6.3 Engine conversion.
MKB Has camshafts but they won't sell them as a separate item.
Super Member
Joined: Sep 2007
Posts: 631
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From: Paris.
E320
Are you sure Jay? I would agree on the larger compressor wheel and exhaust wheel...Don't see the compressor housing being any larger. It just wouldn't be cost effective for mercedes to remake the housing , Just exploring the difference between these 2 beast, I like this type of conversation.
Pictures below are from 2 V12's...
Left one is CL65 , Right one S600
, Just exploring the difference between these 2 beast, I like this type of conversation. Pictures below are from 2 V12's...
Left one is CL65 , Right one S600
I'm Pretty Sure The housings are the same. Only the size of the wheels change.
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From: South FL & NYC
Your worst nightmare...
Super Member
Joined: Sep 2007
Posts: 631
Likes: 2
From: Paris.
E320
I think mercedes could easily Find 612hp in The 5.5 Engine ... But how to explain to customers that they paid $75000 more over an 600 just for an ECU tune and a Bodykit... That's why they over-engineer some cars.
A SL600 doesn't need anything else than An ECU tune to make 65 Power...
It's like Brabus Who needs to cast new Exhaust Manifolds for the 65 to Justify the price of their stupid T65S kit that makes 720 Hp for 20,000 Bucks, and has absolutely no Cooling upgrades...
A lot of technical features are not justified. The O.5l the 65 has over the 600 have no reason exept to justify the "65" name...
