Fuse Pull: Low Octane Fuel Fix For L99 and LS3. Reset Fuel Map for High Octane Fuel. - Page 145 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

TJ_1000 · 08-09-2012, 06:39 AM

Does anyone know if is better to run Ethonol free 89 or 91 with Ethonol in it????

RyanBoles · 08-15-2012, 12:48 AM

Ay update on this problem? GM planning on a mass recall to flash the cars computers?

Scott@Bjorn3D · 08-15-2012, 06:17 AM

GM is not going to recall the computers. If where going to they would of done it to my car since it is the car that GM and everyone found out about the octane table issues. GM engineers spent a day with my car in 2009 and finally found the issue towards the end of the day.

When they reset my computer to high octane table my car was faster than the car they drove down to Eufaula, AL that all the car magazines had tested when the Camaro came out.

bombgolf · 08-16-2012, 09:11 AM

I have the '12 45th Vert, L99. I did the fuse pull. It seemed to work initially but I think the valve clatter on acceleration may have been interpreted as knock and reset to the low octane setting. Does that seem possible or make sense?

E.T. · 08-16-2012, 10:26 AM

Quote:

Originally Posted by mntgome1

If your vehicle is tuned for 91 is this fuse pull unnecessary?

I've been told that if you're tuned, you no longer have to worry about the fuse pull

Higgs Boson · 08-16-2012, 10:43 AM

Quote:

Originally Posted by E.T.

I've been told that if you're tuned, you no longer have to worry about the fuse pull

That's correct.

Also, it is important to know that GM uses a spec fuel to calibrate their cars and trucks, NOT E10 pump gas. Your car will always pull timing from the factory high octane map, the table has too much timing for today's pump gas.

BSR-1 · 08-16-2012, 11:45 AM

Quote:

Originally Posted by bombgolf

I have the '12 45th Vert, L99. I did the fuse pull. It seemed to work initially but I think the valve clatter on acceleration may have been interpreted as knock and reset to the low octane setting. Does that seem possible or make sense?

Valve clatter = knock
So I'd say yes it's possible.

John3006 · 08-16-2012, 07:33 PM

I called the dealer and he said that they filled my car with 87 octane due to harder times. After being nervous about pulling the fuses (worried that it might change something else), I have finally pulled the fuses tonight. I have read the majority of the 82 forum pages on this and spoke to a couple other members and have been reassured. I will let everybody know how it worked for me tomorrow or Saturday.

bombgolf · 08-16-2012, 11:55 PM

Quote:

Originally Posted by BSR-1

Valve clatter = knock
So I'd say yes it's possible.

Sorry but I should've clarified, I am running 93 octane but am unsure what the dealer put in, so I did the fuze pull. I have the L99 and am dealing with some valve or lifter chatter, that is apparently a "common" occurrence on that motor but not a knock in the traditional sense. So I was wondering if that lifter issue was enough to reset the computer to the lower octane fuel table?

bombgolf · 08-17-2012, 12:04 AM

Sorry but one more question, I have only had my vert for about 2 weeks now but i havent been able to break the tires loose or "light them up" in my 2SS Vert. I would think with all the advertised torque, it would be hard to not break them loose. Am I missing something or might there be an issue with her that I am missing? I do have the lifter chatter normally associated with the L99.

45th · 08-17-2012, 05:25 AM

Quote:

Originally Posted by bombgolf

Sorry but one more question, I have only had my vert for about 2 weeks now but i havent been able to break the tires loose or "light them up" in my 2SS Vert. I would think with all the advertised torque, it would be hard to not break them loose. Am I missing something or might there be an issue with her that I am missing? I do have the lifter chatter normally associated with the L99.

Did you take tc off?

nytrorcr · 08-17-2012, 05:51 AM

Unlike musle cars of my time, these have alot more meat contacting the road then my SS in 69.

Scott@Bjorn3D · 08-17-2012, 05:57 AM

Quote:

Originally Posted by bombgolf

Sorry but one more question, I have only had my vert for about 2 weeks now but i havent been able to break the tires loose or "light them up" in my 2SS Vert. I would think with all the advertised torque, it would be hard to not break them loose. Am I missing something or might there be an issue with her that I am missing? I do have the lifter chatter normally associated with the L99.

Do not think you are going to break an auto loose without break standing in Florida in this heat. At 88 degree intake air temp the timing gets it ass pulled thru the ringer and lowers your power. PLUS with the heat down there now your tires will stick to the ground so will be hard to spin them. The hotter outside the stickier summer tires get.

Raptor3141 · 08-17-2012, 08:59 AM

Well, having bought a used 2010 SS (LS3) about three weeks ago, I decided to try the fuse pull last night. Especially since I didn't know what had been put in the car over the past 9,500 miles. This morning, I put the fuses back in and what a difference in idle and responsiveness!!

My drive to work is all traffic lights and low speed limits. I had been averaging 13.4 mpg. This morning, I reset everything on the DIC and by the time I got to work, I was averaging 20.1 mpg.

This is going to save me a ton of cost in fuel on the trip I am going on in a couple of weeks from Milwaukee to Georgia!!

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08-09-2012, 06:39 AM	#2017
TJ_1000 Drives: 2013 Camaro SS. with Hurst shifter Join Date: Aug 2012 Location: Charlotte Posts: 4	Does anyone know if is better to run Ethonol free 89 or 91 with Ethonol in it????

08-15-2012, 12:48 AM	#2018
RyanBoles Drives: 2010 2SS Join Date: Jul 2012 Location: Meridian, MS Posts: 132 View My Garage	Ay update on this problem? GM planning on a mass recall to flash the cars computers?

08-15-2012, 06:17 AM	#2019
Scott@Bjorn3D Drives: Kami, 2013 2SS LS3 Luvin Join Date: Oct 2008 Location: Eufaula, Alabama Posts: 6,427	GM is not going to recall the computers. If where going to they would of done it to my car since it is the car that GM and everyone found out about the octane table issues. GM engineers spent a day with my car in 2009 and finally found the issue towards the end of the day. When they reset my computer to high octane table my car was faster than the car they drove down to Eufaula, AL that all the car magazines had tested when the Camaro came out.

08-16-2012, 09:11 AM	#2020
bombgolf Drives: 45th Anniv 2SS/RS Convertible Join Date: Aug 2012 Location: Florida Posts: 63	I have the '12 45th Vert, L99. I did the fuse pull. It seemed to work initially but I think the valve clatter on acceleration may have been interpreted as knock and reset to the low octane setting. Does that seem possible or make sense?

08-16-2012, 07:33 PM	#2024
John3006 Drives: 2012 Camaro 2SS w/ Synergy Package Join Date: Mar 2012 Location: Indianapolis, IN Posts: 49 View My Garage	I called the dealer and he said that they filled my car with 87 octane due to harder times. After being nervous about pulling the fuses (worried that it might change something else), I have finally pulled the fuses tonight. I have read the majority of the 82 forum pages on this and spoke to a couple other members and have been reassured. I will let everybody know how it worked for me tomorrow or Saturday.

08-17-2012, 12:04 AM	#2026
bombgolf Drives: 45th Anniv 2SS/RS Convertible Join Date: Aug 2012 Location: Florida Posts: 63	Sorry but one more question, I have only had my vert for about 2 weeks now but i havent been able to break the tires loose or "light them up" in my 2SS Vert. I would think with all the advertised torque, it would be hard to not break them loose. Am I missing something or might there be an issue with her that I am missing? I do have the lifter chatter normally associated with the L99.

08-17-2012, 05:51 AM	#2028
nytrorcr Drives: I.P.C. 2SS vert, 21 wheels Join Date: Feb 2012 Location: Cookeville, TN but Just above Atlanta, GA for now Posts: 152	Unlike musle cars of my time, these have alot more meat contacting the road then my SS in 69.

08-17-2012, 08:59 AM	#2030
Raptor3141 Drives: 2010 2SS/RS RJT M6 Join Date: Aug 2012 Location: Milwaukee, WI Posts: 204 View My Garage	Well, having bought a used 2010 SS (LS3) about three weeks ago, I decided to try the fuse pull last night. Especially since I didn't know what had been put in the car over the past 9,500 miles. This morning, I put the fuses back in and what a difference in idle and responsiveness!! My drive to work is all traffic lights and low speed limits. I had been averaging 13.4 mpg. This morning, I reset everything on the DIC and by the time I got to work, I was averaging 20.1 mpg. This is going to save me a ton of cost in fuel on the trip I am going on in a couple of weeks from Milwaukee to Georgia!!