Alexfor8

Has anyone been able to remove the top speed limiter of 186mph? I have a Eurocharged tune but they said the transmission was limiting the top speed even though the ecm had the top speed removed

E634Me

Have you still run into the limit or is this an intellectual curiosity?

Alexfor8

Yes, I can confirm the limit is still there.

E634Me

Interesting. Will keep a watch on this to see what comes out of removing the transmission limiter.

Mandarin

I know a few people with different tunes and their cars don't have speed limit after tune.

The tune I'm going to install soon also is removing the speed limit.

whoover

How do you verify that? Don't you need an airstrip or the Bonneville salt flats or the like in this country? It would take quite a long run to get to 186.

There are stretches of I-5 in the middle of California where I've driven 140, but those are flat, straight and in the middle of nowhere, and even in my S65 I couldn't have gone any faster even if I had the nerve.

Mandarin

Did I say those people are in the US?)))

diamondblak05

If you all read OP's post, he's talking about the tranny limiting the top speed and not the ECM.

24Hours

Not only the physical limits imposed from our lousy HWY system, but the threat of criminal charges at speeds like that keep me from attempting. However a friend did test the 155mph rumor on the old V70R on a stretch of I-95 coming out of Larchmont.

E634Me

It takes less room than you might think. I did 170 mph on the autobahn during our European Delivery trip on the last night heading back to Stuttgart from Munich. Car was still pulling strong when I let off. I figure it would probably take less than another mile from the 170 mph to reach the 186 mph limiter. Distance goes by deceptively fast at that speed.

Did a number of pulls from around 180 kph (111 mph) to 220 or 240 kph (149 mph). You really don't get a good feel for how strong this car is when doing pulls from 60 mph to 100 mph, the car actually feels like it pulls harder at the higher speeds. This is of course pretty subjective as I suspect a Vbox would show that the car's acceleration is actually less during the higher speed pulls.

Back here in the states where speed limits are the rule, I've rarely topped 100 mph - but the car gets there quickly when I do

Wolfman

The car will easily go over 190 on your speedo before the limiter kicks in and on certain highways in Germany (at the right time, based on traffic) you can drive that until it gets boring or your tank runs dry. Which will happen first
The speedo will be off by a bit (3-5mph). I remember that AMS tested the accuracy of many performance cars and while most were showing optimistic values, higher-end models were surprisingly close.

The car cannot only go that fast but it can easily sustain the speed...
That said, the transmission being the limiter? I have seen videos (autotopNL) where the S63 drove to 315kmph (196mph). Different gearing?

Carac

Final drive ratio in the S63 is 2.82. It's 3.060 in the E63. Transmission ratios are identical though.

e65

on w212, my top speed limiter was removed. 7 speed mct. 6th gear goes well beyond the 186mph limiter,

it could be transmission programming that is creating the limit for w213. I doubt the car is running out of RPM with 9 speeds.

beyond the limiter the car no longer feels stable. Road imperfections are exaggerated. Intercoolers cant keep up. ECU pulls timing. It's really hard on the car.

jasontaylor7

As I explained elsewhere years ago, anyone can do it, and without risk of a speeding ticket. And it is totally free. This is a rear-wheel powered car, so you just lift up the rear off the ground using your favorite jack stands and let her rip. Make sure you have enough extra height for tire stretch. The open differential might be an issue. Does this car has an electronic LSD in the traction control? And, there could be oscillations that are muted on an actual surface. I don't know.

The next most expensive testing method is on a dyno. After that it gets interesting. You'll need to calibrate using gps in the top gear to know the actual speeds, but this test is good for knowing what governors you have on a vehicle.

whoover

These cars are AWD with electronic diffs. Open differential?

Anyway, I'd put that kind of verification of VMax in the intellectual curiosity bin. Very different from driving over 186 MPH. On tires that are rated to 186.

zukmeister

Lol - this is such a terrible idea

E634Me

Please try it on your own E63s and let us know how it goes ;-)

Keith66

Dude... so much NO to unpack here. Unless you are going for a Darwin Award.

Even if you don't die by being launched through your house, you just overheated all your junk and achieved nothing.

TugboatBill

When you do this be sure to have several cameras running and then post it on youtube. 1 million hits, baby!