Speed limiter at 200MPH

ibfootin · 05-07-2021, 03:28 PM

Is there a speed limiter on a 2018 ZL1 1LE. My HP tuner shows i drop timing at 200 mph----- (18degs to -10degs)

arpad_m · 05-07-2021, 03:38 PM

I have a standard ZL1 tune that sets the limiter to 206 mph. Not sure about the 1LE.

crosive · 05-07-2021, 04:33 PM

I don't recall anything but the verts having a hard limiter. Also, since you've had your 1le faster than the drag limited top speed, I can imagine it's gonna start getting pretty tough once heat starts setting in. especially after a 200mph pull, that doesn't come quick.

ModernCamaroZ28Fan · 05-07-2021, 07:55 PM

ZLE's top speed is limited around 190 MPH opposed to the ZL1's 200.

crosive · 05-07-2021, 08:05 PM

Quote:

Originally Posted by ModernCamaroZ28Fan

ZLE's top speed is limited around 190 MPH opposed to the ZL1's 200.

Stock for stock, I've not heard of anyone doing much past 180 in a zle.

But I haven't much looked

Heat Magnet · 05-07-2021, 08:51 PM

I think the ZL1 1LE is drag limited to under 200 mph

redcoats1976 · 05-08-2021, 07:06 AM

are you the one that passed me on I-4 yesterday?

Timbo-1LE · 05-08-2021, 08:14 AM

I did 174 in SS 1LE at Kennedy Space Center (verified at 172.xx). A year later a ZLE did I think 8-10 over that.

My video is somewhere buried in here... My car hit a aero wall about 160, run was also with road course alignment which did not help. In short, your gonna need lot of power to go over 200...

wnta1ss · 05-08-2021, 10:20 AM

Quote:

Originally Posted by ibfootin

Is there a speed limiter on a 2018 ZL1 1LE. My HP tuner shows i drop timing at 200 mph----- (18degs to -10degs)

Yes there is, limiter at 206 and resume at 204. That is a file from a 2018 ZL1/LE. Those are the same settings as a 2017 ZL1 file that I've checked. Screenshot will be below the text.

Agree with the others that drag is very high on this model. You must have a lot of extra power to go that fast. The test that Timbo-1LE was talking about was a 2.7 mile run where the ZLE reached 178 mph. Watching that video, it's apparent to me that drag is very high on this model, because of the way a 650 hp car is struggling so much at higher speed. My perspective on that opinion is from making a bunch of runs at 170+ in just 1.0 mile with my Camaro SS partial-bolt-on car, which has a good bit less hp than a ZL1.

LT4Greg · 05-08-2021, 10:58 AM

Quote:

Originally Posted by ibfootin

Is there a speed limiter on a 2018 ZL1 1LE. My HP tuner shows i drop timing at 200 mph----- (18degs to -10degs)

Do you plan on going over 200 mph in your ZLE? You would probably need a full roll cage and racing belts/harnesses.

He11bent · 05-09-2021, 06:34 AM

Tires will a limiting factor. They have to be designed to go 200 mph and dont last long at that speed. You should research this. There are few threads on here about this.

arpad_m · 05-09-2021, 07:01 AM

Quote:

Originally Posted by He11bent

Tires will a limiting factor. They have to be designed to go 200 mph and dont last long at that speed. You should research this. There are few threads on here about this.

True, but at 200 mph he'll run out of gas sooner than (Y rated) tires

ibfootin · 05-09-2021, 07:47 AM

Quote:

Originally Posted by redcoats1976

are you the one that passed me on I-4 yesterday?

No it wasn't me. I am in Houston

ibfootin · 05-09-2021, 07:50 AM

I have all that and my car drops timing just after 200 mph and i am wondering what i can do so it doesn't drop timing

05-07-2021, 03:28 PM	#1
ibfootin Drives: Camaro ZL1 1LE Join Date: Jul 2019 Location: Houston Texas Posts: 15 View My Garage	Speed limiter at 200MPH Is there a speed limiter on a 2018 ZL1 1LE. My HP tuner shows i drop timing at 200 mph----- (18degs to -10degs)

05-07-2021, 03:38 PM	#2
arpad_m Drives: 2018 Camaro 2SS A8 Join Date: Jul 2017 Location: East Tennessee Posts: 11,716 View My Garage	I have a standard ZL1 tune that sets the limiter to 206 mph. Not sure about the 1LE. __________________ 2018 Camaro 2SS — G7E MX0 NPP F55 IO6 735 rwhp \| 665 rwtq Magnuson TVS 2300 80mm pulley \| Kooks 1 7/8" LT headers \| JRE smooth idle terminator cam \| LT4 FS & injectors \| TSP forged pistons & rods JMS PowerMAX \| DSX flex fuel kit \| Roto-Fab CAI \| Soler 95mm LT5 TB \| 1LE wheels \| 1LE brakes \| BMR rear cradle lockout \| JRE custom tune 1100 - 1/30/18 \| 2000 - 1/31/18 3000 - 2/06/18 TPW 2/26/18 3400 - 2/19/18 \| 3800 - 2/26/18 4300 - 2/27/18 \| 4B00 - 3/01/18 4200 - 3/05/18 \| 4800 - 3/14/18 5000 - 3/16/18 \| 6000 - 3/19/18 Last edited by arpad_m; 05-08-2021 at 10:29 AM. Reason: typo fix

05-07-2021, 07:55 PM	#4
ModernCamaroZ28Fan LT1_Radenso Drives: a 2 spd water bottle Join Date: Sep 2017 Location: In your trunk Posts: 293	ZLE's top speed is limited around 190 MPH opposed to the ZL1's 200. __________________ Last edited by ModernCamaroZ28Fan; 05-07-2021 at 07:56 PM. Reason: a

05-07-2021, 08:51 PM	#6
Heat Magnet Drives: 2021 Chevrolet Camaro 2SS Join Date: Apr 2021 Location: CA Posts: 59 View My Garage	I think the ZL1 1LE is drag limited to under 200 mph __________________ Cars I own/drive: *2007 Chevrolet Cobalt LT Sedan* Ultra Silver Metallic, gold painted wheel covers, 4T45 transmission *2021 Chevrolet Camaro 2SS Coupe* Black, Redline Edition, 1LE Suspension Package, 10L80 transmission, NPP, Body color high wing spoiler, Ground effects kit, 48-state legal Brembo brakes

05-09-2021, 06:34 AM	#11
He11bent Drives: 2019 2SS Convertible Camaro Join Date: Mar 2012 Location: Savannah, GA Posts: 671	Tires will a limiting factor. They have to be designed to go 200 mph and dont last long at that speed. You should research this. There are few threads on here about this. __________________ \(^^^)/ <--A Smile From He11 Escort 360 MAXX w/DIYGen5 hardwire Harness K&N AirCharger Cold Air Intake Sound Tube Delete

05-07-2021, 04:33 PM	#3
crosive Drives: 18 zl1 Join Date: Aug 2017 Location: central alabama Posts: 935	I don't recall anything but the verts having a hard limiter. Also, since you've had your 1le faster than the drag limited top speed, I can imagine it's gonna start getting pretty tough once heat starts setting in. especially after a 200mph pull, that doesn't come quick.

05-08-2021, 07:06 AM	#7
redcoats1976 Drives: LT W/2LT,blue metallic Join Date: Jul 2016 Location: central florida Posts: 4,924	are you the one that passed me on I-4 yesterday?

05-08-2021, 08:14 AM	#8
Timbo-1LE Drives: 2017 SS 1LE Join Date: Mar 2017 Location: Florida Posts: 617	I did 174 in SS 1LE at Kennedy Space Center (verified at 172.xx). A year later a ZLE did I think 8-10 over that. My video is somewhere buried in here... My car hit a aero wall about 160, run was also with road course alignment which did not help. In short, your gonna need lot of power to go over 200...

05-09-2021, 07:50 AM	#14
ibfootin Drives: Camaro ZL1 1LE Join Date: Jul 2019 Location: Houston Texas Posts: 15 View My Garage	I have all that and my car drops timing just after 200 mph and i am wondering what i can do so it doesn't drop timing

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