Speed Limiter on my e34 525i Touring

Hey folks. It's been awhile I've had this problem and I really ant to be rid of it.

The car is a 1992 e34 525i Touring

When I'm on the highway and going fast, as soon as I reach 170, a new messege appears on my computer screen says, "Max. 110mph"

And I also use to get an actual engine cut off at 205, but I Installed Dinan ECU chip and it went away.

From there, the climb to 200 is rather slow considering I'm in 4th at 4300rpm out of 7000rpm.

I never had this problem before. I was able to do 240+ with 5 people in the car. I'm not sure what the problem is exactly, but if anyone knows any computer reset's or something to get rid of the "max. 110mph" code.

Well, I know the OBC can be set to chime when you go past a set speed (you set it). Other than that... can't help you with the engine.

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Originally Posted by BMWDriver

Well, I know the OBC can be set to chime when you go past a set speed (you set it). Other than that... can't help you with the engine.

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Yea, I set it to 260 in efforts of passing the damn limiter. The car will still acclerate but just not as quickly. I really need this code gone, I cant stand the fact that a simple vdub will get to 200 before me from a highway run which we all know how well Bmw's pull straight through to 200+

Hmm, well patience is a virtue.

Please tell us hwat modifications you have. Did you put the wheels on after the dinan chip? Are you using the correct fuel grade? What maintenance have you done to the car? etc.

The more info you give the easier it is to help you.

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Originally Posted by Brandon J

Hmm, well patience is a virtue.

Please tell us hwat modifications you have. Did you put the wheels on after the dinan chip? Are you using the correct fuel grade? What maintenance have you done to the car? etc.

The more info you give the easier it is to help you.

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I've had this problem for a really long time, almost as long as I can remember. I original bought the chip in hopes of removing the limiter but no avail. I have Regular fuel most of the time, every 2 weeks, I drive it till it's almost empty and fill up with supreme to clean out the lines, injectors, etc. Here is a list of maintence I've done: (Note: I had this problem before ANY of this maintence was performed)

-New Upper Control Arms
-New Lower Control Arms
-New Cross member
-New Stabilizer Bars
-New Tie Rod Assemblies
-Rear Self-Leveling Delete
-Bored Intake Manifold
-Bored Throttle Body
-Custom Cold Air Intake
-DINAN Performance Chip
-DINAN Transmission Chip
-Fan Shroud Delete
-New Head Gasket
-New NKG Spark Plugs
-New Oil Pan
-New Oil Pan Gasket
-New Radiator
-New Thermostat
-New Thermostat Housing + Gasket
-New Valve Cover Gasket
-Polished Piston Heads and Valves

Since 170km roughly correlates to 110 mph I'm guessing the OBC is doing the conversion and displaying the reminder. If accompanied by the gong this is simply the resettable speed warning and does nothing to limit performance.
Supposedly the BM speed limiter takes effect at 155mph, this is moot with 2.5 liters.
240+ km with 5 on board? How long until you and your pals are scraped up with a shovel?
Scram all the "mods" and I'll bet the performance improves.

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Originally Posted by Ross

Since 170km roughly correlates to 110 mph I'm guessing the OBC is doing the conversion and displaying the reminder. If accompanied by the gong this is simply the resettable speed warning and does nothing to limit performance.
Supposedly the BM speed limiter takes effect at 155mph, this is moot with 2.5 liters.
240+ km with 5 on board? How long until you and your pals are scraped up with a shovel?
Scram all the "mods" and I'll bet the performance improves.

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Scram?

I was doing 250 with 7 on board actually racing a supra non-turbo on the highway out-pulling him.

When the messege comes on, I hear the ding and then it starts accelerating slowly but I was able to get it up to 220, took almost 2 minutes from 175

The message should read "You are driving like a fool"

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Originally Posted by Ross

The message should read "You are driving like a fool"

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It should, but it doesn't.

Anyway, now that you mention the OBC, I remember that it had been changed at some-point because the screen was half inked out like a broken calculator screen so it was changed but it wasn't me that had changed it. Could it be that's the problem, that the changed obc was incorrect serial number or the obc is deffective?

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Originally Posted by bad_manners_god

It should, but it doesn't.

Anyway, now that you mention the OBC, I remember that it had been changed at some-point because the screen was half inked out like a broken calculator screen so it was changed but it wasn't me that had changed it. Could it be that's the problem, that the changed obc was incorrect serial number or the obc is deffective?

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Regardless of whether the OBC was changed/defective, it would have no bearing on the cars ability to exceed a certain speed. Your problem(s) ;) lie elsewhere.

Is it getting hot in here?

Dave M