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Discussing Tuned Stock GT vs Bad Tuned Modded GT in the Racer's Corner Forum. Originally Posted by Darrell What you feel is in your head. Your mind is telling ... Modded Mustangs is the premier Ford Mustang Forum on the internet. We discuss all aspects of the Ford Mustang on the forum. Registered Users do not see the above ads. Please Register - It's Free! |
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#21 | |
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Hardcore Enthusiast
1999 Mustang
Join Date: Jul 2006
Posts: 1,309
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#22 | |
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MM Ninjas!
1990 Mustang LX
9.36@143 mph
Join Date: Jan 2006
Location: Fond du Lac, Wisconsin
Posts: 6,579
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Racing in memory of Dave Bandt 11/19/69 - 3/23/08 "he's traded his wheels for wings" Professor of Natural Aspiration ![]() Thanks to: Artie at Trick Flow, Dave at Team Z Motorsports, Brian at Total Engine Airflow and Harold at Furo Racecraft |
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#23 |
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Hardcore Enthusiast
Join Date: Jul 2006
Location: Mooresville, NC
Posts: 1,181
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darrells got ya on that one... it is definately true... i spoke to my engine builder all about different octanes & what not when we rebuilt my sbc350 for my truck... plus i just would argue with darrel cause he knows his shit!!!
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http://www.cardomain.com/ride/2461223 1994 GT: MSD 6AL, BBK O/R H-Pipe, Dynomax Race Bullet mufflers, 3:73 rear, Hurst Short Shifter, MAC cold air intake & much more coming soon! |
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#24 |
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Hardcore Enthusiast
1999 Mustang
Join Date: Jul 2006
Posts: 1,309
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ah, with c16 i could understand but 87 vs 93 same concept i guess but I just don't see a motor loosing efficiency with such a small octane increase. he was talking about using supreme pump gas on a stock tune which imo is fine. but you're right i wouldn't run 117octane gas on my stock tune either lol
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#25 |
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Enthusiast
2000 Mustang GT
Join Date: Jan 2007
Location: Virginia Beach
Posts: 869
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I dont believe it's possible to make more horsepower on a higher octane fuel without doing some tuning and/or timing adjustments unless your vehicle is tuned and timed to run on that octane already. Otherwise, power benefits should be "VERY" slim to none..
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#26 |
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Hardcore Enthusiast
Join Date: Sep 2006
Location: Herrin Il
Posts: 2,241
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Mostly the extra power seems to be on take off only. So your not really getting more horsepower.
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#27 |
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Hardcore Enthusiast
Join Date: Aug 2005
Location: On the trailer.......broke.
Posts: 1,261
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Darrell is 100% correct on this one. I was a tech at a GM stealership years ago and we had a guy from BG come in one time to do a demonstration on fuel systems and octane for us. Did you also know that the lower octane fuels burn cleaner than the higher octane fuels? The higher octane fuels have more carbon in them therefore leave more carbon deposits when burned which makes it more likely to start "labor knocking", fouling plugs and leave deposits on your valves which, over time, can keep them from performing properly.
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