Should u or could run 100 octane with out a tune

JD mustang · April 26th, 2011, 01:42 PM

Thinking bout running a some sort of racing fuel to see if I can gain a tenth or so was wondering if anyone else runs it with out a tune I have no cats so that won't be an issue I am running just 89 right now

jkolbfleisch · April 26th, 2011, 02:18 PM

Higher Octane = Harder to Burn Fuel. A stock engine with no tune would probably get SLOWER with 100 octane.

Higher octane allows more compression, forced induction and timing which all require a more resistant-to-burn fuel. If you don't have any of those ... no need ... no gain.

Rich11 · April 26th, 2011, 02:44 PM

If you have a tuner from American Muscle just call them and ask for a 93 tune.

JD mustang · April 26th, 2011, 04:51 PM

Thanks guys good info. I have some mods but never had a tune unless it was tuned by previous owner but who knows bought it from a dealer 3yrs ago there is no chip in it I know that for sure

Rich11 · April 26th, 2011, 09:55 PM

You should go ahead and grab tuner from AM. See what software your local tuner uses, then go ahead and grab a handheld.

JD mustang · April 26th, 2011, 11:59 PM

Originally Posted by Rich11

You should go ahead and grab tuner from AM. See what software your local tuner uses, then go ahead and grab a handheld.

Ya I have been wanting one my dads got one on his 05 seems to really like it his is an auto so I know his will have greater gains over my 5 sp but it still would be nice to have my speedo is off by 15 - 20 cause of the gear swap and ck engine lt is on cause of the off rd pipe I know those would be fixed with the tune

April 26th, 2011, 01:42 PM	#1
JD mustang Regular 2004 saleen (clone) 8.46 Join Date: Oct 2010 Posts: 166 iTrader: 0 reviews	Should u or could run 100 octane with out a tune Thinking bout running a some sort of racing fuel to see if I can gain a tenth or so was wondering if anyone else runs it with out a tune I have no cats so that won't be an issue I am running just 89 right now

April 26th, 2011, 02:18 PM	#2
jkolbfleisch Regular 2001 Mustang GT Join Date: Nov 2010 Location: Fort Hood, TX Posts: 375 iTrader: 0 reviews	Higher Octane = Harder to Burn Fuel. A stock engine with no tune would probably get SLOWER with 100 octane. Higher octane allows more compression, forced induction and timing which all require a more resistant-to-burn fuel. If you don't have any of those ... no need ... no gain. __________________ 2001 Mustang GT [518 WHP, 502 WTQ][P1SC + 10psi][MMR900][Trick Flow Heads/Intake][Stage 3 Blower Cams][JBA Headers, Magnaflow Tru-X, Flowmasters][11.89@119mph]

April 26th, 2011, 02:44 PM	#3
Rich11 MM Fanatic 2001 Mustang GT 12.70@ 113.50 Join Date: Nov 2009 Location: Laurel, MD Posts: 3,668 iTrader: 3 reviews	If you have a tuner from American Muscle just call them and ask for a 93 tune. __________________ 403rwhp/403rwtq. M.A.D. #11

April 26th, 2011, 09:55 PM	#5
Rich11 MM Fanatic 2001 Mustang GT 12.70@ 113.50 Join Date: Nov 2009 Location: Laurel, MD Posts: 3,668 iTrader: 3 reviews	You should go ahead and grab tuner from AM. See what software your local tuner uses, then go ahead and grab a handheld. __________________ 403rwhp/403rwtq. M.A.D. #11

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April 26th, 2011, 04:51 PM	#4
JD mustang Regular 2004 saleen (clone) 8.46 Join Date: Oct 2010 Posts: 166 iTrader: 0 reviews	Thanks guys good info. I have some mods but never had a tune unless it was tuned by previous owner but who knows bought it from a dealer 3yrs ago there is no chip in it I know that for sure

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