Gas...
the pcm will change timing accordingly what i would be worried about first is if that will gunk up your cat and also keep in mind that the higher the octane the more spark energy it takes to ignite
LS1Tech Sponsor
Joined: Dec 2005
Posts: 2,932
Likes: 12
From: CT
yeah, make sure it's unleaded.... otherwise you'll hose your O2 sensors, plugs, CAT, etc etc...
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06MonteSS / DiabLew Tune
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06MonteSS / DiabLew Tune
2014 Camaro 2SS/RS - LS3, 6-speed manual, short-throw performance shifter, NPP dual-mode performance exhaust, 1LE front splitter, ZL1 rockers, Z28 Rear Spoiler, all paint-matched Red Rock Metallic, BMR strut tower brace, Cold Air Inductions cold air intake, Apex Motorsports, Inc. catch-can, Custom DiabLew Tune
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com
Thread Starter
TECH Enthusiast
Joined: Jun 2008
Posts: 621
Likes: 1
From: Zeeland, MI
Yes yes you did, That comment pretty much summed up the entire rant by that guy....and I was just wondering, the guys in my home town run it in their go fast bikes and muscle cars...even the ricers 
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if you don't have any knock then you don't need higher octane.. Its kinda like stickers on ricers, some people think it makes you faster lol but it doesn't unless you need it.
You cant always here the knock or pinging, with higher compression engines, it is vital you use a quality premium fuel. Have a scanner hooked up to your car and use **** gas or low octane like the 87 that was mentioned. See it it shows the KR sensor and watch that baby work. The last thing you want to do is replace burned piston and valve seats, for a poor choice in gasoline. Read you owners manual, mine calls for PREMIUM FUEL.
On The Tree
Joined: Sep 2007
Posts: 164
Likes: 0
From: Dayton, OH
You could try a 2/3, e85/93oct mix. I have done this on an empty tank and it pulls like a beast.
After about 40 miles the traction control light came on and it was in V8 only mode. I ran the codes and everything was fine. So I pulled the plugs and used a scope to check the cylinders and they were clean as a whistle.
After about 40 miles the traction control light came on and it was in V8 only mode. I ran the codes and everything was fine. So I pulled the plugs and used a scope to check the cylinders and they were clean as a whistle.
TECH Fanatic
Joined: Oct 2006
Posts: 1,190
Likes: 0
My owners manual recommends premium as well but says I can run 87, however I may get knock and lose performance.
I thought I could run 87 but switched back - thanks for the heads up! Finally got clear roads ...
I thought I could run 87 but switched back - thanks for the heads up! Finally got clear roads ...
Its gonna get slower thats for sure unless you move the timing up. You would not notice it so much in part throttle as the timing is fiarly high under cruise conditions, but WOT it may require around 30* or more to get the same perf as 26*-28* on 93 octane. race gas its self doesnt make power unless its has some oxygenating additives etc. It just allows you to get away with higher cylinder pressures w/ less chance of knock.
race gas burns much slower, so if you dont intiate the flame front sooner, the torque will go right in the toilet.
race gas burns much slower, so if you dont intiate the flame front sooner, the torque will go right in the toilet.
