dogma

Has anyone had any experienace with the Kleeman ECU upgrade for the SL500? They claim a 30bhp and 36ft torque increase for $1,800. Thoughts?

detailas

The guy from local Kleemann shop told me that only ECU upgrade is not worth it, unless it is accompanied by free flow exhausts, air-box, etc...

Anyhow, if I was convinced about the HP gain and only just wanted an ECU upgrade, I'd choose Powerchip (Evosport).. Hp/price ratio...

George

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dogma

Do you have any of the specs on the Powerchip?

dogma

I found the info on the powerchip online at

https://www.powerchipgroup.com/datas...13/Mer0127.pdf

Thanks. Have you looked into this upgrade before? What were your thoughts?

dogma

The local Kleeman dealer here said they have dyno'd the airbox and found no appreciable difference past the ECU upgrade. This is through an Atlanta MB dealership.

detailas

As per Powerchip Co., the octanes play substantial role in the HP gain. I fill my gas tank with 100-octane fuel nominal (98 for real) and with the Gold-98 upgrade one gains 8.9% (takes you from 306 hp to 333 hp).

When I first posted my thoughts in the forum, most of the people said that it's not really worth the $$ / hassle... However, if the 'pulling' difference (before/after) was noticeable, I guess I would do it..

You can check my initial thoughts here:

https://mbworld.org/forums/sl-class-r230/164282-company-s-ecu-re-programming-would-you-choose.html


George

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amgme

those gains are pretty hard to believe for a N/A engine. do they have a dyno chart and what fuel they used? race fuel? here in ca, 91 is highest we can get.

johnny5

This could be just me but paying like $1500 or even higher is kind of hard to pay for just a ECU chip. If it was a dramatic difference in power I would be all over it but thats just me.

dogma

They had the dyno work on the website. They show 30 bhp and 36ft.lb.of torque increases. This is for $990. While I like the $33 per hp increase, it does seem to good to be true. That is why I am looking for someone who has made the mod with this chip.

johnny5

Hmmm, you got me curious. If its true and proven hell Im interested! Anyone know?

johnny5

Just checking in on thread.....has anyone decided to chip there car using Kleemann or Renntech ECU upgrades??

mveloz

I had it done in my car with powerchip. Since they are in Los Angeles, I took my car to them. In California only 91 octane, so they did not recommended the gold, unless I’m willing to drive around looking for a gas station with 93 plus. (Very hard to find). The response in my car is a lot better than before.

jmejones

I have RennTech ECU and TCU mods. Unbelievable and dyno results consistently prove on many RennTech moded cars.

AdamG@NorCal

On behalf of Renntech, i want to thank you for purchasing our upgrades.


On another note, Amgme has recently upgraded his ecu on his SL550. You can ask him for his feedback.


For Norcal clients, we can program your ECU for a weekend for a test run before actually purchasing the upgrades. However, we will hold your credit card and sign a paperwork agreeing to pay if you decide to keep the upgrade.

johnny5

About how much HP as well as Torque did you get from just the chip?? Im guessing you have done more than just ecu mods so getting accurate numbers will kind of be hard to distinguish which one helped with increase???

jmejones

The only thing extra was a Eisenmann race exhaust and the RennTech specs are what I got. Horsepower Gain 132 Torque Gain 155 lb-ft
Horsepower 625 Torque 745 lb

AdamG@NorCal

I think thats on the 65 engines?

Acez

the 600 should be closer

johnny5

Thats a big gain what car do you have?

detailas

Should be an SL55 (625 hp - 132 hp gain = 493 hp stock..)

AdamG@NorCal

Just an ecu upgrade? So stage 5?

jmejones

No...I have a SL600 and this is directly from RennTech:SL600
Stock Horsepower 493 @ 5,000 RPM Stock Torque 590 lb-ft @ 1,800-3,500 RPM
Performance Package 1 $6,400
RENNtech ECU &
Transmission Computer Upgrade**
Part #54 230 00 24
Horsepower Gain 132 Torque Gain 155 lb-ft
Total Horsepower 625 @ 5,000 RPM Total Torque 745 lb-ft @ 1,800-3,500 RPM

No reason for me to lie...

jmejones

The following are SL65 numbers:
SL65 AMG
Stock Horsepower 604 @ 5,500 RPM Stock Torque 738 lb-ft @ 2,000-3,000 RPM
Performance Package 1 $6,800
RENNtech ECU &
Transmission Computer Upgrade**
Part #54 230 00 51
Horsepower Gain 66 Torque Gain 102 lb-ft
Total Horsepower 670 @ 5,500 RPM Total Torque 840 lb-ft @ 2,000-3,000 RPM
Performance Package 2 $11,950
RENNtech ECU & Airbox
Part #54 230 00 52
Horsepower Gain 81 Torque Gain 132 lb-ft
Total Horsepower 685 @ 5,500 RPM Total Torque 870 lb-ft @ 2,000-3,000 RPM
V12 Airbox & Engine Cover $5,995
Part #54 230 00 53
Horsepower Gain 15 Torque Gain 30 lb-ft
Total Horsepower 619 @ 5,500 RPM Total Torque 768 lb-ft @ 2,000-3,000 RPM

AdamG@NorCal

Ok got it. I though u had an SL 55.

johnny5

Okay so Im assuming if you want to see noticable gains you will have to go with the package deal and not just an ecu upgrade???