RennTech Stage 4
Thread Starter
Newbie
Joined: Aug 2006
Posts: 8
Likes: 0
From: Boca Raton
CLS 55, RennTech stage 4
RennTech Stage 4
Hi Guys,
Picked up my CLS 55 from RennTech on Friday. I had headers/ECU/Pulley/Airbox and Toe link (traction) installed.
Pre installation estimate were 90 HP and 110 Ft//lb of Torque.
Dyno'd demonstrated an increase of 63 HP (48RW Gain) and 96 Ft/lb of Torque (87 F).
All said and done 540 HP and 617 Ft/lb of Torque.
With the ECU upgrade dthe super charger now comes on at 1200 RPMs almost idle. (1800 RPMs is stock setting).
Is the car faster? Yes, I raced my neighbor's M5 and was able to pull out from behind him on 95 (Boca) and pass him with both cars wide open.
Here is the down side, the power is now unusable with speeds under 40 MPH. Wheel spin is constant to the point of disappointment.
With that said, I hope to improve my driving skills.
Anyone considering these upgrades must be ready for a slower 1/4 mile due to unusable torque with an upside of a much stronger hit at low to mid highway speeds.
Picked up my CLS 55 from RennTech on Friday. I had headers/ECU/Pulley/Airbox and Toe link (traction) installed.
Pre installation estimate were 90 HP and 110 Ft//lb of Torque.
Dyno'd demonstrated an increase of 63 HP (48RW Gain) and 96 Ft/lb of Torque (87 F).
All said and done 540 HP and 617 Ft/lb of Torque.
With the ECU upgrade dthe super charger now comes on at 1200 RPMs almost idle. (1800 RPMs is stock setting).
Is the car faster? Yes, I raced my neighbor's M5 and was able to pull out from behind him on 95 (Boca) and pass him with both cars wide open.
Here is the down side, the power is now unusable with speeds under 40 MPH. Wheel spin is constant to the point of disappointment.
With that said, I hope to improve my driving skills.
Anyone considering these upgrades must be ready for a slower 1/4 mile due to unusable torque with an upside of a much stronger hit at low to mid highway speeds.
MBWorld Fanatic!
Joined: Mar 2004
Posts: 5,768
Likes: 5
From: South FL & NYC
Your worst nightmare...
Hi Guys,
Picked up my CLS 55 from RennTech on Friday. I had headers/ECU/Pulley/Airbox and Toe link (traction) installed.
Pre installation estimate were 90 HP and 110 Ft//lb of Torque.
Dyno'd demonstrated an increase of 63 HP (48RW Gain) and 96 Ft/lb of Torque (87 F).
All said and done 540 HP and 617 Ft/lb of Torque.
With the ECU upgrade dthe super charger now comes on at 1200 RPMs almost idle. (1800 RPMs is stock setting).
Is the car faster? Yes, I raced my neighbor's M5 and was able to pull out from behind him on 95 (Boca) and pass him with both cars wide open.
Here is the down side, the power is now unusable with speeds under 40 MPH. Wheel spin is constant to the point of disappointment.
With that said, I hope to improve my driving skills.
Anyone considering these upgrades must be ready for a slower 1/4 mile due to unusable torque with an upside of a much stronger hit at low to mid highway speeds.
Picked up my CLS 55 from RennTech on Friday. I had headers/ECU/Pulley/Airbox and Toe link (traction) installed.
Pre installation estimate were 90 HP and 110 Ft//lb of Torque.
Dyno'd demonstrated an increase of 63 HP (48RW Gain) and 96 Ft/lb of Torque (87 F).
All said and done 540 HP and 617 Ft/lb of Torque.
With the ECU upgrade dthe super charger now comes on at 1200 RPMs almost idle. (1800 RPMs is stock setting).
Is the car faster? Yes, I raced my neighbor's M5 and was able to pull out from behind him on 95 (Boca) and pass him with both cars wide open.
Here is the down side, the power is now unusable with speeds under 40 MPH. Wheel spin is constant to the point of disappointment.
With that said, I hope to improve my driving skills.
Anyone considering these upgrades must be ready for a slower 1/4 mile due to unusable torque with an upside of a much stronger hit at low to mid highway speeds.
Senior Member
Joined: Dec 2004
Posts: 355
Likes: 0
.
Here is the down side, the power is now unusable with speeds under 40 MPH. Wheel spin is constant to the point of disappointment.
With that said, I hope to improve my driving skills.
Anyone considering these upgrades must be ready for a slower 1/4 mile due to unusable torque with an upside of a much stronger hit at low to mid highway speeds.
Here is the down side, the power is now unusable with speeds under 40 MPH. Wheel spin is constant to the point of disappointment.
With that said, I hope to improve my driving skills.
Anyone considering these upgrades must be ready for a slower 1/4 mile due to unusable torque with an upside of a much stronger hit at low to mid highway speeds.
Member
Joined: Mar 2006
Posts: 99
Likes: 0
From: California
S55, ML350
Quaiffe LSD takes longer to install but is supposed to be far superior to any other options. Something worth looking into.
Question. What percentage loss are you using to figure your hp from the rwhp number?
Also why did you choose RennTech over the other companies?
Question. What percentage loss are you using to figure your hp from the rwhp number?
Also why did you choose RennTech over the other companies?
Thread Starter
Newbie
Joined: Aug 2006
Posts: 8
Likes: 0
From: Boca Raton
CLS 55, RennTech stage 4
My warrenty with MB continues when you use RennTech, not the case with some of the other companies (per my dealer).
I caluclated a 19% loss (per RennTech). Do you have any info or know where I can find it on the LSD you mentioned?
Thanks
rob
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Member
Joined: Oct 2004
Posts: 192
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From: San Francisco, CA
04 E 500 4matic wagon; CLS 63 AMG
Senior Member
Joined: Oct 2006
Posts: 350
Likes: 1
2001 VW Jetta GLX VR6
Renntech selling AMG LSDs, don't they offer their own LSD? I am not familiar with whether RT sells a LSD but I know that Kleemann has their own LSD.
Member
Joined: Mar 2006
Posts: 99
Likes: 0
From: California
S55, ML350
Any reputable shop should know of quaife and be able to order you one. Finding a shop to install it may be a little more difficult. I'd look into it though, Saleen S7's come from the factory with quaife lsd's stock.
