LS3 Factory Tune 87 vs 92 Octane-How Much HP do you lose? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

superchargemyride · 11-03-2011, 12:56 PM

I am sure someone knows the answer to this. If you run 87 octance in your LS3 your knock sensor will kick in thus retarding your timing.

Does anyone know the RWHP on a stock LS3 running 87 Octane?

Does anyone know the RWHP on a stock LS3 running 92 Octane?

What is the diffrence in RWHP on a stock LS3?

I am real curious as to how much RWHP you do loose using 87 Octane.

slick rick · 11-03-2011, 12:59 PM

Planning to run 87?

LoneStar · 11-03-2011, 01:06 PM

With a 20 cent different between 87 and 93, that's only a $3.80 difference for the 19 gallon tank.

If you want to run 87, trade me cars!

superchargemyride · 11-03-2011, 01:10 PM

Quote:

Originally Posted by slick rick

Planning to run 87?

I get 89 now. I am in a rual area and it is hard to get 92. So sometimes I might run 89 with 10% ethanol in it.

superchargemyride · 11-03-2011, 01:15 PM

Quote:

Originally Posted by LoneStarCamaro

With a 20 cent different between 87 and 93, that's only a $3.80 difference for the 19 gallon tank.

If you want to run 87, trade me cars!

It's not the cost or the fuel. I would think that most people who bought a 39k car can afford the fuel. I would hope anyway. It's where I live I am in BFE! BFE has some BAD A## TWISTIES. LOL!

Bad70supreme · 11-03-2011, 02:20 PM

I allways use 93... I got some bad 93 one time and could not run faster then a 13.0 and lost like 3mph, I was wondering why my car was so slow that day, put a few gals of 100 in it and did a fues pull and went 12.60s! Nothing changed but the gas, if you are forced to use 89 I would get a 89 tune for it... your loosing allot of power and the computer is not going to reset without a fuse pull now.

Madness11 · 11-03-2011, 02:31 PM

Quote:

Originally Posted by LoneStarCamaro

With a 20 cent different between 87 and 93, that's only a $3.80 difference for the 19 gallon tank.

If you want to run 87, trade me cars!

16 gallons....on E you on average put 16 gallons back in the car. That is what I have noticed. So the cost difference is a little bit less.

woodstock · 11-03-2011, 03:04 PM

Why would you want to run 87

. The price difference is not worth the loss in power or the fuel gauge sensor problems you will eventually have.

jcollins91106 · 11-03-2011, 03:07 PM

The original question is loss of hp....the ss is not designed to run 87...I dont know numbers but my dealership put 87 in it when I bought it and it ran like crap, rough idle and no ass to it. I put in 93 and did a fuse pull (twice to be safe) and it was like a whole new car.

superchargemyride · 11-03-2011, 03:44 PM

Quote:

Originally Posted by Bad70supreme

I allways use 93... I got some bad 93 one time and could not run faster then a 13.0 and lost like 3mph, I was wondering why my car was so slow that day, put a few gals of 100 in it and did a fues pull and went 12.60s! Nothing changed but the gas, if you are forced to use 89 I would get a 89 tune for it... your loosing allot of power and the computer is not going to reset without a fuse pull now.

Those numbers would seem to be right and I agree with you about the tune.

DandD · 11-03-2011, 04:27 PM

Seems to me I have heard you lose about 10hp per octane point so you are looking at about 60hp loss between 87 and 93 if my number is correct.

superchargemyride · 11-03-2011, 04:40 PM

Quote:

Originally Posted by DandD

Seems to me I have heard you lose about 10hp per octane point so you are looking at about 60hp loss between 87 and 93 if my number is correct.

Need to get off here and find 93 Octane.

vinman · 11-03-2011, 04:46 PM

Quote:

Originally Posted by superchargemyride

Need to get off here and find 93 Octane.

superchargemyride · 11-03-2011, 04:50 PM

Found a BP station 17 miles away with 92 Octane and no ethanol in there gas.

11-03-2011, 12:56 PM	#1
superchargemyride Drives: 2011 Camaro 2SS 6M Join Date: Oct 2011 Location: Clinton, MO Posts: 121	LS3 Factory Tune 87 vs 92 Octane-How Much HP do you lose? I am sure someone knows the answer to this. If you run 87 octance in your LS3 your knock sensor will kick in thus retarding your timing. Does anyone know the RWHP on a stock LS3 running 87 Octane? Does anyone know the RWHP on a stock LS3 running 92 Octane? What is the diffrence in RWHP on a stock LS3? I am real curious as to how much RWHP you do loose using 87 Octane. __________________ 2011 Camaro 2SS-VR-White Stripes-6M-RS-Sunroof-Rear Decklid Wing-Polished Wheels-Premium Mats- Mods-Corsa Cat-Back-Next LT's-Hi Flow Cats-Cam-CAI-Custom Tune Order Date 5/27/11-Invoice Date 6/30/2011- Delivered to Dealer 7/20/2011- I Purchased 10/14/2011 Last edited by superchargemyride; 11-03-2011 at 02:00 PM.

11-03-2011, 12:59 PM	#2
slick rick SoCal Mayhem Drives: 2010 Camaro 1SS/RS Join Date: Aug 2008 Location: Foothill Ranch, CA Posts: 5,488 View My Garage	Planning to run 87? __________________

11-03-2011, 01:06 PM	#3
LoneStar Drives: 2011 IOM Camaro Join Date: Jul 2010 Location: Texas Posts: 3,446	With a 20 cent different between 87 and 93, that's only a $3.80 difference for the 19 gallon tank. If you want to run 87, trade me cars! __________________

11-03-2011, 02:20 PM	#6
Bad70supreme Drives: 2010 aqua blue SS/RS M6 Join Date: Feb 2010 Location: plainfield, IL Posts: 2,706	I allways use 93... I got some bad 93 one time and could not run faster then a 13.0 and lost like 3mph, I was wondering why my car was so slow that day, put a few gals of 100 in it and did a fues pull and went 12.60s! Nothing changed but the gas, if you are forced to use 89 I would get a 89 tune for it... your loosing allot of power and the computer is not going to reset without a fuse pull now. __________________ 10.91 at 122 H/C stock block N/A

11-03-2011, 03:07 PM	#9
jcollins91106 Drives: 2010 2ss m6 Join Date: Aug 2011 Location: staten island, ny Posts: 511	The original question is loss of hp....the ss is not designed to run 87...I dont know numbers but my dealership put 87 in it when I bought it and it ran like crap, rough idle and no ass to it. I put in 93 and did a fuse pull (twice to be safe) and it was like a whole new car. __________________ 2010 2ss M6, TSP 1 7/8 Long Tube headers,dual electric cutouts, 3" pipes all the way back to magnaflows. elite engineering catch can, custom painted engine cover,CAI cold air intake, apex cold air racescoop, jannety racing 470 hp kit, custom JRE hot rough idle blower cam, jannety racing dyno tuned. pfadt lowering springs, lsr short throw shifter, custom sub setup,sony 7" indash nav, interior stiching dye, 20% tint all around, HAVOC spoiler, tail light black out, chevy emblem black out, seibon BBII carbon fiber hood,Front and rear bowtie blackouts. 461 rwhp and not done yet!

11-03-2011, 03:04 PM	#8
woodstock Drives: 2012 Corvette Grand Sport Join Date: Jan 2011 Location: martinez Ga. Posts: 503	Why would you want to run 87 . The price difference is not worth the loss in power or the fuel gauge sensor problems you will eventually have.

11-03-2011, 04:27 PM	#11
DandD Drives: 2010 2SS and 2011 LS Join Date: Aug 2011 Location: Western burbs of the Motor City Posts: 628 View My Garage	Seems to me I have heard you lose about 10hp per octane point so you are looking at about 60hp loss between 87 and 93 if my number is correct. __________________ Around here we like baseball, hot dogs, apple pie, and Chevrolet

11-03-2011, 04:50 PM	#14
superchargemyride Drives: 2011 Camaro 2SS 6M Join Date: Oct 2011 Location: Clinton, MO Posts: 121	Found a BP station 17 miles away with 92 Octane and no ethanol in there gas. __________________ 2011 Camaro 2SS-VR-White Stripes-6M-RS-Sunroof-Rear Decklid Wing-Polished Wheels-Premium Mats- Mods-Corsa Cat-Back-Next LT's-Hi Flow Cats-Cam-CAI-Custom Tune Order Date 5/27/11-Invoice Date 6/30/2011- Delivered to Dealer 7/20/2011- I Purchased 10/14/2011

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Unofficial 1/4 Mile (V8) 2010+ Camaro Fast List	Merc	Dragstrip and Launch Techniques Discussion	250	04-01-2014 11:40 AM
VARARAM \| 2010+ 6.2L V8 Camaro Ram Air Intake - Tune & No Tune Required Systems!	AutoAgenda	V8 Bolt-Ons & Tunes	29	03-12-2013 07:51 PM
Will dyno tune eliminate low octane fuel table issue?	Ruhlman Race Cars	Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons	10	08-06-2011 02:46 AM
Manual vs Auto GTAHVIT vs PQ... The video wars.	76z28	5th Gen Camaro SS LS LT General Discussions	443	08-26-2010 01:26 PM