New Stupid Question - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

race24x · 10-07-2016, 01:00 PM

Hey guys every year we have a top speed run up at Loring AFB in Maine. I want to take my car and try it out along with my Hayabusa. So for the top speed limiter on the Camaro, how can you trick it for a day without getting a tune and ruining your warranty? I am hoping some tuning buffs on here have figured out which thing to unplug etc. I dont care about the speedo not working since it is only one day for a few passes on the runway.

ChibiBlackSheep · 10-07-2016, 01:44 PM

It's programmed into the computer, not really a way to trick it for a day.

race24x · 10-07-2016, 02:40 PM

What about unplugging the wheel sensors and the speedo sensor? Is that a possibility

ChibiBlackSheep · 10-07-2016, 03:10 PM

I could see the car falling into fail modes without sensors plugged in and giving you reduced power, so I wouldn't start unplugging things.

There really isn't an easy cheat, or else it'd be all over forums of modern cars (like the old days of unplugging a cable in the trans).

Tunes are honestly the way to do it, and to really do a lot on modern cars.

race24x · 10-07-2016, 03:57 PM

I just didnt want to effect my warranty

Skoonie · 10-07-2016, 04:09 PM

155 is still pretty fun...

Dizzy82 · 10-07-2016, 11:57 PM

Pay to play.

Marlon1LS · 10-08-2016, 12:52 AM

Quote:

Originally Posted by Dizzy82

Pay to play.

Sent from my iPhone using Tapatalk

race24x · 10-10-2016, 10:19 AM

What about replacing the ECU with a tuned one? Can GM tell if you do this?

ChibiBlackSheep · 10-10-2016, 11:14 AM

Quote:

Originally Posted by race24x

What about replacing the ECU with a tuned one? Can GM tell if you do this?

Yes they would know, the ECU holds mileage and you would need a Tech-2 to perform a relearn on the new computer to have it talk to your BCM.

There is honestly no way of doing this without tuning your car and voiding that powertrain warranty.

I'd say you either realize that going 155 MPH is plenty fast enough, or you tune the car properly so that you can SAFELY run the engine that fast anyway.

Also make sure you have Y rated tires still, I don't know if you are still running the stock PZeros or you have switched to a different tire.

race24x · 10-10-2016, 02:24 PM

Frickin GM LOL Always ruining the fun. I have replacement tires, but they are PZeros also. I thought they were rated for 186 but I will have to check. 155 isnt really fast enough when I am bringing my bike that can run 196 -198, I was really hoping to get more like 165 170 out of the car. I am torn so I will have to wait and see. Since it isnt until next year anyway I have some time. Too bad to because you can find a replacement ECU pretty cheap. I am still amazed there isnt a company out there that can rewrite the table GM monitors back to original. I may have to do some research to see if I can add a resistor to cut the speed signal in half to the computer? I wonder if it has some connection to GPS that would monitor speed, but even then they wouldnt work in a tunnel. I am just thinking out loud here.

ChibiBlackSheep · 10-10-2016, 02:54 PM

Quote:

Originally Posted by race24x

I have replacement tires, but they are PZeros also. I thought they were rated for 186 but I will have to check.

The stock tires are rated for 186, they are Y-rated, I just wanted to make sure if you've replaced tires already that you kept the same rating speeds.

Quote:

Originally Posted by race24x

I am still amazed there isnt a company out there that can rewrite the table GM monitors back to original.

There are companies out there, but GM has smartened up and they can recognize when you modify the tables, even when you bring them back to stock. Once you do a write to the PCM it takes note. I own HPTuners, and just said screw it and tuned my car, and I'm honestly glad that I did, because in stock form it had way more knock than I wanted and I've brought it to much safer fueling and timing.

race24x · 10-13-2016, 04:27 PM

Are there any Electrical Engineers on here that can tell me from a schematic what wire has the speed sensor voltage and what resistor to put in to maybe half the signal. I am wondering if I trick the computer into believing it is still getting a signal, if it will let me go and report half of the speed on the speedo and too the computer?

ClawSS · 10-14-2016, 07:46 AM

I know you want to "try", but you are also messing with fueling and spark table params when you try to trick. You may think you are only going after a speed limiter, but you will also not get the engine to run worth a crap either. You would be giving a low speed, high rpm, high gear, high load (MAP) scenario that would definitely toss that sucker into limp mode! You can't trick it with resisters that way.

10-07-2016, 01:00 PM	#1
race24x Drives: 80 Z28 - 93 Z28 - 14 Camaro SS-RS Join Date: Sep 2016 Location: Fayette Maine Posts: 387	New Stupid Question Hey guys every year we have a top speed run up at Loring AFB in Maine. I want to take my car and try it out along with my Hayabusa. So for the top speed limiter on the Camaro, how can you trick it for a day without getting a tune and ruining your warranty? I am hoping some tuning buffs on here have figured out which thing to unplug etc. I dont care about the speedo not working since it is only one day for a few passes on the runway.

10-07-2016, 01:44 PM	#2
ChibiBlackSheep Drives: 2012 2SS/RS, 1968 SS Join Date: Feb 2012 Location: Southeast, PA Posts: 2,084	It's programmed into the computer, not really a way to trick it for a day. __________________ LS3 Crate Engine Swap \| CSP Custom Cam 232/240 .615/.615 113 +3 \| Stainless Power LT Headers \| Z28 Intake \| Borla S-Type Exhaust \| FTI Triple-Disc Billet 3200 Stall 2012 Camaro 2SS/RS \| 1968 Camaro SS \| 2020 Cadillac CT5 Premium Luxury \| 2021 Spark LS

10-07-2016, 03:10 PM	#4
ChibiBlackSheep Drives: 2012 2SS/RS, 1968 SS Join Date: Feb 2012 Location: Southeast, PA Posts: 2,084	I could see the car falling into fail modes without sensors plugged in and giving you reduced power, so I wouldn't start unplugging things. There really isn't an easy cheat, or else it'd be all over forums of modern cars (like the old days of unplugging a cable in the trans). Tunes are honestly the way to do it, and to really do a lot on modern cars. __________________ LS3 Crate Engine Swap \| CSP Custom Cam 232/240 .615/.615 113 +3 \| Stainless Power LT Headers \| Z28 Intake \| Borla S-Type Exhaust \| FTI Triple-Disc Billet 3200 Stall 2012 Camaro 2SS/RS \| 1968 Camaro SS \| 2020 Cadillac CT5 Premium Luxury \| 2021 Spark LS

10-07-2016, 11:57 PM	#7
Dizzy82 Drives: 2011 1LT/RS A6 RJT SuperCharged Join Date: Mar 2011 Location: 87114 Posts: 3,503 View My Garage	Pay to play. __________________ Power is worthless without control. *The 2nd* protects the 1st.** BMR sub frame brace, BMR tunnel brace, LSR sways, LSR CM ca & tl, Sphon ExD el, GM tower brace, Megan EZ Streets, Goodridge Stainless Steel Braided brake lines, PowerStop D/S rotors & pads, Doug Thorty Ceramic Shorties, Magnaflow x-pipe, MRT V2.0, KICKER PowerStage sub & amp, Infinity speakers & tweeters, Viteese Throttle Controller, Viteese Paddle Shifters, ACS T2 Splitter, ACS T2 Ports/Quad LED lights, VDI kit, Havoc diffuser, IPF ECU/TRANS tuned, IPF/KPE Supercharged. 364RWHP/297RWTQ

10-14-2016, 07:46 AM	#14
ClawSS High-tech Redneck Drives: '10 CGM SS, '02 2500HD, '09 300SRT8 Join Date: Nov 2010 Location: Lexington, KY Posts: 757	I know you want to "try", but you are also messing with fueling and spark table params when you try to trick. You may think you are only going after a speed limiter, but you will also not get the engine to run worth a crap either. You would be giving a low speed, high rpm, high gear, high load (MAP) scenario that would definitely toss that sucker into limp mode! You can't trick it with resisters that way. __________________ "My friends call me Chris. Are you my friend?" 2010 CGM L99 2SS/RS - GPI SS3 VVT, BTR DoD Delete, Circle D 4c, BTR springs, Katech C5R Timing Chain, MRR-228 315/275, CAI, Elite catch-can, TSP 1 7/8" Headers + offroad pipes, Magnaflow 3", Pfadt springs, BMR LCAs, toelinks, trailing arms, cradle bushings, & sway bars w/ endlinks, Vitesse paddles, heritage grille, and an eBay splitter. Power upgrades by Race Proven Perf.; Tuning by ShorTuning.

10-07-2016, 02:40 PM	#3
race24x Drives: 80 Z28 - 93 Z28 - 14 Camaro SS-RS Join Date: Sep 2016 Location: Fayette Maine Posts: 387	What about unplugging the wheel sensors and the speedo sensor? Is that a possibility

10-07-2016, 03:57 PM	#5
race24x Drives: 80 Z28 - 93 Z28 - 14 Camaro SS-RS Join Date: Sep 2016 Location: Fayette Maine Posts: 387	I just didnt want to effect my warranty

10-07-2016, 04:09 PM	#6
Skoonie Drives: 2010 SS M6 Join Date: Aug 2015 Location: McMinnville OR Posts: 68	155 is still pretty fun...

10-10-2016, 10:19 AM	#9
race24x Drives: 80 Z28 - 93 Z28 - 14 Camaro SS-RS Join Date: Sep 2016 Location: Fayette Maine Posts: 387	What about replacing the ECU with a tuned one? Can GM tell if you do this?

10-10-2016, 02:24 PM	#11
race24x Drives: 80 Z28 - 93 Z28 - 14 Camaro SS-RS Join Date: Sep 2016 Location: Fayette Maine Posts: 387	Frickin GM LOL Always ruining the fun. I have replacement tires, but they are PZeros also. I thought they were rated for 186 but I will have to check. 155 isnt really fast enough when I am bringing my bike that can run 196 -198, I was really hoping to get more like 165 170 out of the car. I am torn so I will have to wait and see. Since it isnt until next year anyway I have some time. Too bad to because you can find a replacement ECU pretty cheap. I am still amazed there isnt a company out there that can rewrite the table GM monitors back to original. I may have to do some research to see if I can add a resistor to cut the speed signal in half to the computer? I wonder if it has some connection to GPS that would monitor speed, but even then they wouldnt work in a tunnel. I am just thinking out loud here.

10-13-2016, 04:27 PM	#13
race24x Drives: 80 Z28 - 93 Z28 - 14 Camaro SS-RS Join Date: Sep 2016 Location: Fayette Maine Posts: 387	Are there any Electrical Engineers on here that can tell me from a schematic what wire has the speed sensor voltage and what resistor to put in to maybe half the signal. I am wondering if I trick the computer into believing it is still getting a signal, if it will let me go and report half of the speed on the speedo and too the computer?