LS3 Octane Mistake - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

mikey8 · 01-22-2010, 09:12 AM

I just traded my 2LT RS for the 6.2 LS3. I did not know about the 93 octane til now. I have only used half a tank during the first fill up ever ( 80 miles on the car). My question is: When I fill up next time with 93, will the computer recognize the 93, and give the performance back? The reason I ask, is because I read about fuse pulls in the L99?

Roger Ramjet · 01-22-2010, 09:20 AM

Yes, the ECM will adjust. It seems the L99 program is slower to correct than the LS3 program.

2010SSRS · 01-22-2010, 09:44 AM

what is this 93 octane thingy y'all r talking about? i've had my LS3 since May, never used 93 octane and it's always run like raped ape.....

so what gives?

2SSRS@Gen5diy · 01-22-2010, 09:50 AM

But we cant get 93 octane in the west, so i buy 87 octane.(And i have a LS3)

Andro · 01-22-2010, 10:01 AM

No 93 out here in Vegas, only thing we can get is 91

2010SSRS · 01-22-2010, 10:18 AM

Quote:

Originally Posted by 2SSRS

But we cant get 93 octane in the west, so i buy 87 octane.(And i have a LS3)

Quote:

Originally Posted by Andro

No 93 out here in Vegas, only thing we can get is 91

go to the small local airport or racetrack.....

Angrybird 12 · 01-22-2010, 10:21 AM

Quote:

Originally Posted by 2010SSRS

go to the small local airport or racetrack.....

I would think twice before using those in one of these cars... Especially airplane fuel.. Most AVGAS contains Lead. A no no with today's engines...

eynigush · 01-22-2010, 10:23 AM

No 91 octane at your stations? I've put 91 before on my trip to Phoenix.

--Eddie

Quote:

Originally Posted by 2SSRS

But we cant get 93 octane in the west, so i buy 87 octane.(And i have a LS3)

Angrybird 12 · 01-22-2010, 10:23 AM

Quote:

Originally Posted by Andro

No 93 out here in Vegas, only thing we can get is 91

Back last year when the price of gas went up over $5.00 a gallon all they were selling here was 87 Octane... I just fear it may happen again. But I have the V6 so I shouldn;t have any trouble.

Monte · 01-22-2010, 12:51 PM

You can run the lower octane, provided you just drive the car....you will run into problems at WOT with pinging and timing retard. Even with 87 you probably could never break the car beating on it, but the ECM will take away all your power.

brAnd7onX · 01-22-2010, 01:23 PM

Why are some of you running 87 with your V8?? Astonishing.

Angrybird 12 · 01-22-2010, 01:36 PM

Quote:

Originally Posted by brAnd7onX

Why are some of you running 87 with your V8?? Astonishing.

some places it is hard to get anything but 87...and then some people are not thinking about that it only costs a few dollars more to fill up with the good stuff..
right now it costs $2.57 a gallon for regular, and $2.77 for premimum. A big .20 cents a gallon more. If your Camaro is on Empty the most you will put in is around 17 gallons, so .20 X 17= $3.40 a tankful. Just skip buying a burger and fries at Mc Donalds and you have enough to pay for it.

Pk · 01-22-2010, 01:52 PM

Quote:

Originally Posted by Skyman 08

some places it is hard to get anything but 87...and then some people are not thinking about that it only costs a few dollars more to fill up with the good stuff..
right now it costs $2.57 a gallon for regular, and $2.77 for premimum. A big .20 cents a gallon more. If your Camaro is on Empty the most you will put in is around 17 gallons, so .20 X 17= $3.40 a tankful. Just skip buying a burger and fries at Mc Donalds and you have enough to pay for it.

++++++++1, its funny people dont realise how small the price increase is. Get the good stuff people

Edrock · 01-22-2010, 03:09 PM

Quote:

Originally Posted by mikey8

I just traded my 2LT RS for the 6.2 LS3. I did not know about the 93 octane til now. I have only used half a tank during the first fill up ever ( 80 miles on the car). My question is: When I fill up next time with 93, will the computer recognize the 93, and give the performance back? The reason I ask, is because I read about fuse pulls in the L99?

Quote:

Originally Posted by Roger Ramjet

Yes, the ECM will adjust. It seems the L99 program is slower to correct than the LS3 program.

Like Roger said, it will learn. To speed up the process, simply perform the fuse pull procedure overnight (a sticky in this forum - look at the top section) after running all the low grade fuel out and filling up with the highest octane in your area and it'll be set. Only have to wait overnight. The next morning, replace the fuses, drive, and you'll notice a difference fairly quickly. Have fun.

01-22-2010, 09:12 AM	#1
mikey8 Drives: 2019 SS 1LE Join Date: Dec 2009 Location: Winter Garden, FL Posts: 549	LS3 Octane Mistake I just traded my 2LT RS for the 6.2 LS3. I did not know about the 93 octane til now. I have only used half a tank during the first fill up ever ( 80 miles on the car). My question is: When I fill up next time with 93, will the computer recognize the 93, and give the performance back? The reason I ask, is because I read about fuse pulls in the L99? __________________

01-22-2010, 09:20 AM	#2
Roger Ramjet Motor Head Drives: CTS-V Join Date: Feb 2009 Location: So MD Posts: 494	Yes, the ECM will adjust. It seems the L99 program is slower to correct than the LS3 program. __________________ History Camaro's: 83, 93, 95, 98, & 10.

01-22-2010, 09:44 AM	#3
2010SSRS Drives: 2000 Silverado Join Date: Apr 2009 Location: Southern WI Posts: 1,241	what is this 93 octane thingy y'all r talking about? i've had my LS3 since May, never used 93 octane and it's always run like raped ape..... so what gives? __________________ IOM 2SSRS LS3 R6P - VIN 7553 Delivered 5/22/2009 Kooks, Corsa and Roto-Fab - SOLD 9/2010 VR 2SSRS LS3 - Borla, SLP CAI

01-22-2010, 10:01 AM	#5
Andro NOICE!!! ™ Drives: Force Fed 427 Join Date: Jan 2009 Location: GOT BOOST? Posts: 5,214 View My Garage	No 93 out here in Vegas, only thing we can get is 91 __________________

01-22-2010, 12:51 PM	#10
Monte Drives: '88 Monte Carlo SS, '10 Camaro SS Join Date: Jan 2010 Location: RI Posts: 224	You can run the lower octane, provided you just drive the car....you will run into problems at WOT with pinging and timing retard. Even with 87 you probably could never break the car beating on it, but the ECM will take away all your power. __________________ -Chris '10 Camaro SS '88 Monte Carlo SS

01-22-2010, 09:50 AM	#4
2SSRS@Gen5diy Drives: 2014 Z/28 #82+#192, 18ZLE 66Nova Join Date: Oct 2008 Location: By the lake in AZ Posts: 15,719 View My Garage	But we cant get 93 octane in the west, so i buy 87 octane.(And i have a LS3)

01-22-2010, 01:23 PM	#11
brAnd7onX Drives: 2012 1SS IOM Join Date: Oct 2009 Location: Hutto, TX Posts: 1,642	Why are some of you running 87 with your V8?? Astonishing.

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