Can’t get 93 octane near me, what do I do? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Valkyrie14 · 04-18-2020, 07:50 PM

So, all I can get in my neck of the woods is 91 octane. I am considering a couple of options, just using 91 octane. Getting a octane booster and mixing at every fill up. Getting a 85 octane mod and tune and finding a station around here that sells that (least favorite option).

Anyone else dealing with this?

Background: I have a tune from previous owner that is set for 93 octane. I have headers and if I go back to stock tune the 02 sensors go off. I am in the middle of a build and am trying to avoid paying for multiple tunes when I know I have a big tune coming.

0stones0 · 04-18-2020, 07:55 PM

91 is what’s readily available where I am. So, that’s what goes in. No problems.

Bigdumogre · 04-18-2020, 07:57 PM

Time to move? lol

Greenhornet2 · 04-18-2020, 07:59 PM

Just needs to be tuned for what octane you are running. Timing will be slightly less aggressive. If e85 is readily available everyone loves running E. I'm going to have mine tuned on 93 only. Once tuned I'll be adding a bottle of octane boost every tank to add a bit more safety.

Moto-Mojo · 04-18-2020, 08:00 PM

Save your money for the big tune. I cannot imagine 93 v 91 being that big a difference in the butt dyno. There’s many here who know more but won’t his fuel table revert to the low octane default if continually used over time anyway?

Valkyrie14 · 04-18-2020, 08:28 PM

Quote:

Originally Posted by 0stones0

91 is what’s readily available where I am. So, that’s what goes in. No problems.

Where are you? You can give a region of WI if you don’t want to give town/city.

Valkyrie14 · 04-18-2020, 08:34 PM

Quote:

Originally Posted by Greenhornet2

Just needs to be tuned for what octane you are running. Timing will be slightly less aggressive. If e85 is readily available everyone loves running E. I'm going to have mine tuned on 93 only. Once tuned I'll be adding a bottle of octane boost every tank to add a bit more safety.

What booster are you planning on using? Power Nation promotes a race fuel additive that you add to regular gas. I think you can mix it to make any octane. I am probably going to pull my fuses and try it for a couple of tanks to see if I feel anything. At least until I get my tune and at that time I will either tune for 91 or 93 and just be a gas station chemist every time I fill up.

E85 has always intrigued me, another type of gas I will have to drive a considerable distance to get it. That is my biggest hang up.

InFiD3ViL · 04-18-2020, 09:17 PM

I think your best option based on everything you said is to just run a quality octane booster for now. No sense paying for another retune and you don't want to risk running 91.

I definitely wouldn't consider E85 if you don't have a local station. That just sounds like a major PITA.

xstuntman · 04-18-2020, 09:32 PM

From what I've read most octane boosters work by lightening your wallet and you are very unlikely to see even a one point increase in octane.

91 is all we can get here too.

Mouse330 · 04-18-2020, 09:48 PM

Quote:

Originally Posted by xstuntman

From what I've read most octane boosters work by lightening your wallet and you are very unlikely to see even a one point increase in octane.

91 is all we can get here too.

That’s true

0stones0 · 04-18-2020, 09:57 PM

Quote:

Originally Posted by Valkyrie14

Where are you? You can give a region of WI if you don’t want to give town/city.

Lake Winnebago.

ADVMax · 04-18-2020, 10:30 PM

Quote:

Originally Posted by 0stones0

Lake Winnebago.

I know the neighborhood, my wife's from Weyauwega.

I'm loving no alcohol 93 at $2.19 to $2.40 gal here right now. Went out and circulated some through my engine this afternoon!

Greenhornet2 · 04-18-2020, 10:34 PM

There's pretty limited info on how much the octane booster actually adds. Which is why i'll just buy the cheap stuff and add it may not do anything, may help a little bit but all it takes is a little bit sometimes.
There are plenty that run FI on 91 octane. That's the point of getting it tuned, it's tuned for the fuel you are running. Don't put 110 in it then get it tuned, go home and fill up with 91. Now if e85 is somewhat close to you and you might want to run it sometimes you get an e85 setup with a sensor. You will have two tables set up, one for 91 and one for e85 and it will automatically switch over when e85 is sniffed by the sensor. You can leave it very conservative on the 91 tune in that case and have a very large power jump on e85 if you're feeling frisky.

mikeman · 04-19-2020, 03:33 AM

If you have a new build coming up, I'd just use 91 pump. No sense spending more money for a slightly higher octane when you can use that for the build.

In the old days, the local airport used to be a viable option for getting 100+ octane.
However, I don't know if you can still do that. From what I've read, 91 pump mixed with 104 gets you to around 95/96 which is optimal (no spark knock) on a street tune.

04-18-2020, 07:50 PM	#1
Valkyrie14 Valkyrie14 Drives: Chevrolet Camaro SS Join Date: Mar 2020 Location: Eau Claire, Wisconsin Posts: 962	Can’t get 93 octane near me, what do I do? So, all I can get in my neck of the woods is 91 octane. I am considering a couple of options, just using 91 octane. Getting a octane booster and mixing at every fill up. Getting a 85 octane mod and tune and finding a station around here that sells that (least favorite option). Anyone else dealing with this? Background: I have a tune from previous owner that is set for 93 octane. I have headers and if I go back to stock tune the 02 sensors go off. I am in the middle of a build and am trying to avoid paying for multiple tunes when I know I have a big tune coming. __________________ 2014 SS LS3/LSA Supercharger, 10% Super Damper, 2.55 upper, AGP Dual Pump, ID 1050 injectors, Pegasus solid rear cradle bushings, LT Headers, Roto-Fab CAI, Elite E2 catch can, E85 corn fed, 160 Thermostat, Monster Twin Disk, MGW Short Throw shifter, Tick Clutch Master Cylinder, HP Tuners, JL Audio system.

04-18-2020, 07:55 PM	#2
0stones0 It don’t come easy. Drives: 2010 2SS RS M6 Join Date: May 2014 Location: WI Posts: 2,206 View My Garage	91 is what’s readily available where I am. So, that’s what goes in. No problems. __________________

04-18-2020, 07:57 PM	#3
Bigdumogre Drives: 2012 Camaro SS Join Date: Dec 2019 Location: New York Posts: 1,434	Time to move? lol __________________ 2012 Camaro 2SS/RS - CSP Custom Cam 232/240 .615/.615 113 +3, Texas speed CNC heads, FTI billet triple disc converter, K&N cai, Katech ported TB, GPI Ported/rod modded manifold, Texas speed 1 7/8 headers, HFC, Flowmaster 2 chambers with x pipe, Mishimoto CC, MSD wires, Roto fab washer relocation, tru cool 40k trans cooler, apex scoop, Pedders extreme coil overs and much more!!

04-18-2020, 07:59 PM	#4
Greenhornet2 Drives: 2011 Camaro 2SS LS3 Whipple Join Date: May 2019 Location: Connecticut Posts: 1,925	Just needs to be tuned for what octane you are running. Timing will be slightly less aggressive. If e85 is readily available everyone loves running E. I'm going to have mine tuned on 93 only. Once tuned I'll be adding a bottle of octane boost every tank to add a bit more safety. __________________ Whipple 2.9 CAI ID1050x injectors ZL1 Pump JRE FPCM JMS Voltage booster JRE Rough Idle blower cam BTR .660 springs CHE trunnion kit 1 7/8 Speed Engineering Borla Atak JRE scoop 1.5" lowering springs BMR trailing arms and toe links Cradle inserts 704WHP 603WTQ 93 octane

04-18-2020, 08:00 PM	#5
Moto-Mojo Fast Cars and Old Guitars Drives: 2015 2SS RS (L99, baby!) Join Date: Apr 2012 Location: N. CA Posts: 3,973	Save your money for the big tune. I cannot imagine 93 v 91 being that big a difference in the butt dyno. There’s many here who know more but won’t his fuel table revert to the low octane default if continually used over time anyway? __________________ “I don’t want to belong to any club that would have me as a member.” - Groucho Marx

04-18-2020, 09:17 PM	#8
InFiD3ViL Drives: 2010 CGM 2SS/RS LS3 Swapped A6 Join Date: Sep 2016 Location: Spring Hill, FL Posts: 4,575	I think your best option based on everything you said is to just run a quality octane booster for now. No sense paying for another retune and you don't want to risk running 91. I definitely wouldn't consider E85 if you don't have a local station. That just sounds like a major PITA. __________________ 2010 CGM Camaro 2SS LS3 Swapped A6 - GPI LS3 SS1 .647/.638, (224/237, 112 +4, 7º overlap) on CamMotion 8620 core, BTR Platinum .660" Dual Spring kit w/titanium retainers, CHE bronze trunnion upgrade, stock heads milled @ .015, Melling HV 10296 oil pump, TSP 1-7/8" long tube headers (W/Catless Off-road Pipes), Corsa Xtreme 3" Catback, GPI Ported/Rod Mod Intake, Stage 2 Ported Throttle Body, Vararam OTR CAI, Mike Norris Gen 2 catch can + GM 1LE clean side separator, 160º thermostat - Megan Racing adjustable coilovers (lowered 1.75"), MRR M017 10/11" wheels-Tuned by Ryan @ GPI

04-18-2020, 09:32 PM	#9
xstuntman Drives: 2012 Victory Red LFX Join Date: Dec 2012 Location: west central Texas Posts: 1,310	From what I've read most octane boosters work by lightening your wallet and you are very unlikely to see even a one point increase in octane. 91 is all we can get here too. __________________ 2018 SS wheels, red Heritage grille, actual driving lights, ZL1 strut tower brace, GM Performance billet aluminum fuel door, front grille Bowtie delete, painted red rotors and calipers, 1/4 window American Flags, splash guards, AEM dry panel air filter.

04-18-2020, 10:34 PM	#13
Greenhornet2 Drives: 2011 Camaro 2SS LS3 Whipple Join Date: May 2019 Location: Connecticut Posts: 1,925	There's pretty limited info on how much the octane booster actually adds. Which is why i'll just buy the cheap stuff and add it may not do anything, may help a little bit but all it takes is a little bit sometimes. There are plenty that run FI on 91 octane. That's the point of getting it tuned, it's tuned for the fuel you are running. Don't put 110 in it then get it tuned, go home and fill up with 91. Now if e85 is somewhat close to you and you might want to run it sometimes you get an e85 setup with a sensor. You will have two tables set up, one for 91 and one for e85 and it will automatically switch over when e85 is sniffed by the sensor. You can leave it very conservative on the 91 tune in that case and have a very large power jump on e85 if you're feeling frisky. __________________ Whipple 2.9 CAI ID1050x injectors ZL1 Pump JRE FPCM JMS Voltage booster JRE Rough Idle blower cam BTR .660 springs CHE trunnion kit 1 7/8 Speed Engineering Borla Atak JRE scoop 1.5" lowering springs BMR trailing arms and toe links Cradle inserts 704WHP 603WTQ 93 octane Last edited by Greenhornet2; 04-20-2020 at 01:14 PM.

04-19-2020, 03:33 AM	#14
mikeman Banned Drives: 2015 Camaro Join Date: Aug 2018 Location: My Garage Posts: 1,125	If you have a new build coming up, I'd just use 91 pump. No sense spending more money for a slightly higher octane when you can use that for the build. In the old days, the local airport used to be a viable option for getting 100+ octane. However, I don't know if you can still do that. From what I've read, 91 pump mixed with 104 gets you to around 95/96 which is optimal (no spark knock) on a street tune.