ASR - Acts like governor?

**dkroshko** · 03-11-2006, 10:08 PM

I just picked up a 2000 z28 with 3" Flowmaster Pipes and K&N cold air intake... I was running it down the freeway and it would not go past 115. I had ASR enabled every time I hit that speed - Does anyone know if ASR will prevent the car from going 115+ or do I have another problem??

**snake_skinner00** · 03-12-2006, 04:39 AM

ASR is your traction control. it would have nothing to do with the speed limiter. i've had my 2000 above 115 plenty of times, so mabye a previous owner has set a speed limiter of 115 on your car or something?

***Ed Blown Vert*** · 03-12-2006, 05:58 AM

You hitting the speed limiter.

**BrandonDrecksage** · 03-12-2006, 07:03 AM

if your car didn't come with z rated tires from the factory....that is where your speed limiter is..with z rated tires from the its around 162 or so.

**2001NBMZ28** · 03-12-2006, 09:09 AM

Look at the tire sticker on the drivers side door.

**myk02k** · 03-12-2006, 09:41 AM

...I don't believe my car has had Z-rated tires, but i have hit 140 MPH before.

**02z28ls1** · 03-12-2006, 01:17 PM

My 02 Z-28 can w/the standard tire wheel set-up and they were z-rated,didn't see any lesser rated tire availability on the option list-never heard of a Z-28 that was limited to 115. Have heard of the pickup trucks being limited to around 95. I agree that someone has fiddled w/the computer and lowered the max speed. Even my 98 V-6 car went 125 fairly easy.

**dkroshko** · 03-12-2006, 04:29 PM

the sticker on the door says tire rating it "T"... it just doesnt make sense that a z28 would cut out at 115.

Although i have read that some audi's with ASR had enabled the speed limiter at a programed mph...

I'll have to test it out at an open dry road and find out

**dkroshko** · 03-12-2006, 04:31 PM

Originally Posted by snake_skinner00

ASR is your traction control. it would have nothing to do with the speed limiter. i've had my 2000 above 115 plenty of times, so mabye a previous owner has set a speed limiter of 115 on your car or something?

if the speed limiter had been set lower - is there a way to turn it off?

***Ed Blown Vert*** · 03-12-2006, 05:18 PM

Tuning software can change it

**hammertime** · 03-12-2006, 06:45 PM

Originally Posted by dkroshko

the sticker on the door says tire rating it "T"... it just doesnt make sense that a z28 would cut out at 115.

From TireRack
P - 93 MPH
Q - 99 MPH
S - 112 MPH
T - 118 MPH
U - 124 MPH
H - 130 MPH
V - 149 MPH
Z - 149+ MPH
W - 168 MPH
Y - 186 MPH

Your car probably came with 235/55-16's which were not Z rated. Cars with 245/50's are...

**dkroshko** · 03-12-2006, 06:52 PM

dang, you guys were right it is a limiter. The stock tires were T rated (looked at the driver side door sticker), and looks like they are good up to 118. So i went out for a drive and turned the ASR off just incase and heck my Z topped off at 118...

does anyone know how much it would cost to re-tune the computer to not limit

have any of you experienced this before?

Not that I drive over 118 all the time, but it would be nice to know im not limited..

**02z28ls1** · 03-12-2006, 07:00 PM

Get some higher speed rated tires if you do reflash the computer,just to be smart and safe. The limit is there for a reason. Wanted to add that i learn something new everyday-didn't know they sold a lower speed rated tire on a Z-28-not sure why they would. My V-6 -5 speed car was not speed limited,guess it was the manual transmission. It had the T-rated tires.

**dkroshko** · 03-12-2006, 07:03 PM

Originally Posted by 02z28ls1

Get some higher speed rated tires if you do reflash the computer,just to be smart and safe. The limit is there for a reason. Wanted to add that i learn something new everyday-didn't know they sold a lower speed rated tire on a Z-28-not sure why they would. My V-6 -5 speed car was not speed limited,guess it was the manual transmission. It had the T-rated tires.

Sorry I forgot to mention the tires on there right now are Z rated but computer still thinks theyre "T"

Where would one go to get the computer reflashed? and how much $ would that cost?