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80mph max?

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Old Apr 30, 2007 | 07:44 PM
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From: Turbocharged in NC
Default 80mph max?

Does anyone know whether or not the 80mph message on the DIC is a suggestion or it will enforce it when the F55 suspension fritz's out?
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Old May 1, 2007 | 08:21 AM
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I believe the computer will actually limit your speed. The owner's manual also indicates speed will be limited.
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Old May 1, 2007 | 04:23 PM
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just dont go over 80 if the f55 is fritzed, why would you want to?
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Old May 2, 2007 | 12:13 AM
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What happened to your F55?
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Old May 2, 2007 | 06:28 AM
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Originally Posted by C-INRED
What happened to your F55?
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Old May 3, 2007 | 12:49 PM
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You wil hit 80 and the car will jerk violently at 80mph. Ain't no way your getting above 80mph.
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Old May 4, 2007 | 06:30 PM
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From: Turbocharged in NC
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To answer the question of what happened to my F55, when I installed my APS Twin Turbo kit on my 2005 C6, the air intake hose needed to go where the F55 sensors were. I removed the sensors and installed C6 Z06 shocks. That is when the messages started, and I started looking for how to disable them.

Click here for my install pics

Turns out that after wasting two hours Monday and another 2 hours on Wednesday at my local dealership, and having them tell me things like the servers were down and GM needed to write a program for my car. I finally today took it to a different dealer a little further away. My car was in and out in just a few minutes, and the messages are gone.

It looks like you definitely can disable the F55 option on a 2005 C6 using the Tech2 tool, you just have to find a technician who knows how to do it, and at a Chevy dealer, that can be challenging sometimes, but there are good Corvette techs out there.

Also, if you have HPTuners and ever get the message, you can edit the Speed Limiter2 setting in the PCM and set it to 186MPH like the speed limiter1 is set, and the DIC message changes to 158MPH max, so I wonder if that means it would go 158mph or 186mph... Hmmmm.....

Oh well, now it'll go 186mph for sure.

Last edited by wewing; May 4, 2007 at 06:32 PM.
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Old May 4, 2007 | 09:58 PM
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Killing the F55... baby, what are you thinking?
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Old May 4, 2007 | 11:51 PM
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On page 3-58, the 2005 owner's manual says that some speed limit will be enforced, but it does not say it will be 80 mph.

MAXIMUM SPEED 80 MPH (129 km/h): To
acknowledge the warning, press the RESET button.
After you press the RESET button, a message will
reappear every 10 minutes until this condition changes.
This message indicates that a malfunction is present
in the selective real time damping system. The vehicle
speed will be limited to a value determined by the
vehicle when the shock absorber system has failed and
the shocks are in their full soft mode. Have your
vehicle serviced by your GM dealer as soon as possible.
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Old May 5, 2007 | 12:51 AM
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From: Turbocharged in NC
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I can tell you that when it says 80mph on the DIC, it means it. I tried it out, and it did limit me to that. Also, that full soft mode, its more like your car bouncing like a basketball. When I still had the shocks on the car, but the front sensors were missing, the car basically dribbled itself down the road.

I do wish I could have saved the F55, and I tried hard as you can see from my link to my install web site in my post above, but at some point you have to admit defeat. My wallet thanked me for installing the regular shocks, my butt wishes they were still F55.

The car handles great though.
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