FEGELEIN

Wanted to stretch its legs last night. Was late had a great open stretch of highway, and my friends NYPD detective PBA card and metal shield ready if necessary (lol).
Dam governor shuts down at 130! what a shame, so much was left in her.

RickP330

Oh that's strange, whats the speed rating on the tires? It's only reason to govern the speed, can I come borrow that shield LOL.
RickP

emilner

MB servive bulletin 412T.Renntech.ECU should fix your problem....

LaicepsYdobon

4matics are limited to 130MPH while RWD cars are limited to 155MPH. Like emilner suggested you can flash your ECU to remove the governor but please be careful both with yourself and others. And don't forget to check your tire ratings also; the Michelins on my 4matic are rated only up to 100MPH.

emilner

Your Michelins are certainly not oem with a rating that low. Are you positive they are only rated to 100? I didn't think Michelin made a tire with such a low rating....

gcollier

RWD are limited to 130 also but my Renntech ECU reflash bumped it up to 187mph.

ipp

But that doesn't help you anything? 187 mph is 300 km/h, I have a hard time beleiving the E350 will do that...

LaicepsYdobon

The tires came with the car; they are all-season Michelins (not sure exactly which model). I checked the rating on them and looked up what the rating meant in my MB manual. That was 2 years ago but I'll go and check over the weekend to make sure I'm not mistaken. I'll let you know after I "hit the books"

LaicepsYdobon

Super steep downhill with hurricane like winds blowing from the rear ?

gcollier

yea I doubt it will do that but it should definately be able to do in the 150 range with no problem.

gaazmon

like others have said, if you flash your ECU and remove the speed limiter, you should get higher speed rated tires.

how can the car go 187??? doesn't the speedometer run out at 160??? i thought the most it let's you get is 155

gcollier

That's what the new limit is with the ecu. When has a speedometer ever stopped a car from going faster?

gaazmon

damn. i never knew the E could hit those speeds. i mean i know the 63 can once you remove the speed limiter.

Rowrbazzle

Indeed. I remember going about 125 (per the speedo on my other friend's car) while riding in a Ford Taurus where the speedometer only went to 85.

I don't understand why the governor is only 130 on this car. That seems low considering my Mazda3 with a 2.3L cut off at 120 (if I remember correctly).

emilner

I guarantee MB did not put tires on your car that have a 100mph speed rating while leaving the speed limiter at 130. You could own the company on that one....

gaazmon

they did that so they could put lower rated tires that only go for 130mph (H rated) vs a higher rating such as V W or Z. also it takes them out of liability since if the car could go to 160 from factory and you as the consumer put 130mph rated tires, as a replacement set, and went over and the tires blew up, then you would try to sue.

my 06 yukon xl denali can go to about 120mph but cuts off there (i've never tried that high, i know it hits 100).

ya, i'm sure they are still rated for 130mph.

LaicepsYdobon

Thanks for reminding me; I just checked and I have H rated tires which are good up to 130mph. I don't know what I was looking at 2 years ago

emilner

There are quite a few letters on the sidewall, I mix them up sometimes. I miss the old days where it was Z or garbage. I'm glad to here your tires are rated at 130, I could not imagine Michelin making a tire of that size with a 100mph rating (I consider them to be the best tire company, period).

jbean114

I am new to mods or engine tunes of any kind, so my apologies if this question seems a bit naive, but I heard that if you remove the governor it voids the warranty. Is this true, or just a way to scare people to leave the governor activated?

Also, with the service bulletin mentioned above, I assume I need to go to a special place to have this done (like gcollier did in Scottsdale)? Do you think an MB service center would do it, or would it have to be an after-market shop?

The reason being that I live in Germany with the US spec E550 and would love to use the car to it's full potential on those fantastic autobahns before I ship her back to the States. And yes, of course I would get a set of proper summer tires rated for higher speeds if I decided to do this.

Thanks for the help...

On a side note, I am going to a German dealer today or next week to inquire about any options they have to replace the orange side markers... They are really starting to bug me. I'll let you all know what they say/provide.

Cheers!

jbean114

On my E550 RWD, I am limited to 130mph... Where did you get the info on the 155mph?

FEGELEIN

That makes perfect sense now, since the governor is matched to the tire rating, but on a world class car like this, the tires should be higher rated and the governor raised!!!!

FEGELEIN

It's a lease, so I am not going to play w/ it. I have my 911 to rip into the stratosphere. It was about 2am on an empty parkway, so optimal safety situation for all.

LaicepsYdobon

The 155MPH limit is a gentleman's agreement between the three big Germany car manufacturers (Audi, BMW and MB). All sport model cars coming out of the factory are limited to 155MPH by an electronic governor within the ECU. However, they also made it extremely easy to remove this electronic limit with a simple ECU reflash.
The reason why some cars are limited to 130MPH or 155MPH is because of the package the car is equipped with. If you have a non-sport model your car is limited to 130MPH. If you have the sport package your car's top speed is bumped up to 155MPH. For the life of me I can't find the top speed info on the E-Class spec sheet so I looked on BMWs and I found it there:

http://www.bmwusa.com/Standard/Content/Vehicles/2010/3/335ixDriveSedan/Features_and_Specs/335ixDriveSedanSpecifications.aspx

Look at the top speed, there are two values there; with and without the sport package.

Even all M and AMG cars are limited to 155MPH straight from the factory:

http://www.bmwusa.com/Standard/Conte...fications.aspx

FEGELEIN

But all 550s come w/ the AMG sport package, so why the 130?

LaicepsYdobon

Because you have a 4matic. 4matics use all season tires which are H rated and limited to 130MPH. If you were to have a non-4matic 550 it would have summer performance tires which would be rated higher than 130mph and your ECU would be bumped up to 155MPH. If your car is a 4matic it doesn't matter if you have the sport package or not you are limited to 130MPH.