Speed limitor/governed - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Emvici · 08-24-2013, 04:37 PM

I am getting a 2014 ZL1 convertible and although I dont plan to be trying to run at top speed, I would like to know I have the ability to hit the coupe speed limit. So I am wondering if, the speed limitor or speed governor be changed with a tune?

2012-1822 · 08-24-2013, 04:39 PM

As a lay person speaking here, I'm going to go with no. There's not like a switch or something.

Not going to make a huge difference to you. If you take it to a drag strip or road course, that doesn't require you to have extra rollover protection, you still wouldn't most likely exceed your current limit.

Lee123 · 08-24-2013, 05:02 PM

I'm almost certain it can be removed with a tune. At least I've read that many times. I didn't think to ask about it when Ted tuned mine since I didn't plan to go over 155 anyway.

cornerspeed92 · 08-24-2013, 05:33 PM

Quote:

Originally Posted by Emvici

I am getting a 2014 ZL1 convertible and although I dont plan to be trying to run at top speed, I would like to know I have the ability to hit the coupe speed limit. So I am wondering if, the speed limitor or speed governor be changed with a tune?

You should already be at 185 mph with the ZL1.

Cheveey57 · 08-24-2013, 05:44 PM

Quote:

Originally Posted by cornerspeed92

You should already be at 185 mph with the ZL1.

Yes a tune would do it, but don't do it with those tires. They are rated for what's its tuned for.

Emvici · 08-24-2013, 08:19 PM

The convertible Zl1 is governed at 155. So since the convertible and the coupe share the same tires, tires will not be the issue. it just comes down to whether a tune will allow it the same speed as the coupe.

Sir Nuke · 08-25-2013, 11:10 AM

YEP. basically, every SS, ZL1, and even a v6 RS is governed at 155 mph......the LT AND LS's are set at 118 mph.

but YES, a turner can remove the limiter all together.

AdamM · 08-25-2013, 12:19 PM

Quote:

Originally Posted by Sir Nuke

YEP. basically, every SS, ZL1, and even a v6 RS is governed at 155 mph......the LT AND LS's are set at 118 mph.

but YES, a turner can remove the limiter all together.

The ZL1 is governed at 184, not 155

DaFisch · 08-25-2013, 12:59 PM

Like others said, a tune removes it. I used the diablo predator tuner and was able to tune out afm, governer and shift points by myself.

SlingShot · 08-25-2013, 02:12 PM

The ZL1 convertible is governed at 155 and the coupe is opened. The limit on the convertible can be removed with a tune, but your warranty will be gone. There is no issues with the tires, all ZL1's use the same rubber ... Also on the convertible there is no PTM like in the coupe.

Sir Nuke · 08-25-2013, 03:08 PM

Quote:

Originally Posted by Sir Nuke

YEP. basically, every SS, ZL1, and even a v6 RS is governed at 155 mph......the LT AND LS's are set at 118 mph.

but YES, a turner can remove the limiter all together.

oops......made a boo boo.....its the convertible ZL1 that is governed at 155.....the Coupe doesn't have one, its open, however it is actually drag restricted.

Emvici · 08-25-2013, 08:17 PM

thank you for the accurate information you have shared. I didnt know that the convertible doesnt have the PTM damn@!.

jkchambless · 08-26-2013, 10:04 AM

Only cars with the factory 18 inch wheels are limited to 118 mph. LT/RS is 155 just like an SS.

ZED SLED · 08-26-2013, 11:22 AM

Story is, ZL1 verts are speed limited to 155 because GM wouldn't certify the top above that speed. Since they are speed limited, there was no reason for a belly pan. As far as PTM, could only guess it's because they figure few if any would track it on a road course beacuse of expensive safety mods.

08-24-2013, 04:37 PM	#1
Emvici Drives: 2014 ZL1 White Convertible Join Date: Aug 2013 Location: St Pete Fl Posts: 682	Speed limitor/governed I am getting a 2014 ZL1 convertible and although I dont plan to be trying to run at top speed, I would like to know I have the ability to hit the coupe speed limit. So I am wondering if, the speed limitor or speed governor be changed with a tune?

08-24-2013, 04:39 PM	#2
2012-1822 Drives: Black ZL1 Join Date: Apr 2013 Location: City of Champions, Alabama Posts: 3,698	As a lay person speaking here, I'm going to go with no. There's not like a switch or something. Not going to make a huge difference to you. If you take it to a drag strip or road course, that doesn't require you to have extra rollover protection, you still wouldn't most likely exceed your current limit. __________________ Check out Alabama Camaros, for Camaro enthusiasts all around Alabama https://www.facebook.com/groups/1739...group_activity

08-24-2013, 05:02 PM	#3
Lee123 Drives: 2012 2SS M6 Join Date: Dec 2011 Location: Phoenix, AZ Posts: 768	I'm almost certain it can be removed with a tune. At least I've read that many times. I didn't think to ask about it when Ted tuned mine since I didn't plan to go over 155 anyway. __________________ 2012 2SS Convertible Magnuson, Headers, Cam, JRE Tune. 563 HP.

08-25-2013, 11:10 AM	#7
Sir Nuke Master of All Things Drives: '20 Corvette Stingray Join Date: Jul 2009 Location: Southeast of Houston, Texas Posts: 22,332 View My Garage	YEP. basically, every SS, ZL1, and even a v6 RS is governed at 155 mph......the LT AND LS's are set at 118 mph. but YES, a turner can remove the limiter all together. __________________

08-25-2013, 02:12 PM	#10
SlingShot Drives: 2012 ZL1 - #670 Join Date: Jun 2009 Location: Seminole, Fl. Posts: 8,009	The ZL1 convertible is governed at 155 and the coupe is opened. The limit on the convertible can be removed with a tune, but your warranty will be gone. There is no issues with the tires, all ZL1's use the same rubber ... Also on the convertible there is no PTM like in the coupe. __________________

08-24-2013, 08:19 PM	#6
Emvici Drives: 2014 ZL1 White Convertible Join Date: Aug 2013 Location: St Pete Fl Posts: 682	The convertible Zl1 is governed at 155. So since the convertible and the coupe share the same tires, tires will not be the issue. it just comes down to whether a tune will allow it the same speed as the coupe.

08-25-2013, 12:59 PM	#9
DaFisch Master Amateur Mechanic Drives: Victory Red 2011 2SS/RS Join Date: Jan 2013 Location: South Barrington, IL Posts: 1,720	Like others said, a tune removes it. I used the diablo predator tuner and was able to tune out afm, governer and shift points by myself.

08-25-2013, 08:17 PM	#12
Emvici Drives: 2014 ZL1 White Convertible Join Date: Aug 2013 Location: St Pete Fl Posts: 682	thank you for the accurate information you have shared. I didnt know that the convertible doesnt have the PTM damn@!.

08-26-2013, 10:04 AM	#13
jkchambless Austin LT Drives: 1LT - Airaid,JBA Axleback,VMax PTB Join Date: Jun 2009 Location: Austin, Texas Posts: 546	Only cars with the factory 18 inch wheels are limited to 118 mph. LT/RS is 155 just like an SS.

08-26-2013, 11:22 AM	#14
ZED SLED Drives: 2017 Mosaic Bk ZL1 M6 Join Date: Jul 2009 Location: South of Raleigh, NC Posts: 9,477 View My Garage	Story is, ZL1 verts are speed limited to 155 because GM wouldn't certify the top above that speed. Since they are speed limited, there was no reason for a belly pan. As far as PTM, could only guess it's because they figure few if any would track it on a road course beacuse of expensive safety mods. __________________