Quote:
Originally Posted by pwd72s
I'm one of those idiots that actually reads owner's manuals. Mine had a line aimed at "Bullitt only"...it said that the car would run fine on regular, but for more power to run premium. This leads me to believe the Bullitt has a slightly different computer tune than the GT. Mine is an '09.
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According to the language in this Ford media release, adaptive spark was added to the 2008 Mustang GT. Which makes me wonder. Has any one tried higher octane in their stock 2008 or newer GTs and noticed any performance increases?
Personally all I can ad is. When a Ford dealer installed my FR1 package and the FRPP 91 tune which went with it, I still had about 4 gallons of 87 in the tank when I filled up with 91. There was no pinging on the way home. And I jumped on it a couple times too. So either the Adaptive Spark was working or the FRPP tune is lax enough to be ok with 90 instead of 91.
The link is in case anyone wanted to see where I got this from.
http://media.ford.com/article_displa...ticle_id=28718
No Knock
Thanks to Ford's improved adaptive spark ignition system, Lincoln MKS owners that fill up with regular unleaded don't have to worry about the common engine knock and pinging often associated with using a lower-grade gas.
This system can sense what type of fuel is being injected into the motor, and communicates the information to the powertrain control module (PCM), which adjusts the spark accordingly. “We have improved the algorithms and software so the vehicle's PCM is better able to figure out what fuel is being used and quickly adapt,” said Russ.
In addition to software changes, the ignition system features two knock sensors rather than one to further improve performance. These two sensors detect the presence of uncontrolled burning in the chambers more accurately, so the control module can retard engine timing as needed to eliminate the potential for engine knock and pinging.
Other vehicles that feature the improved two-sensor adaptive spark ignition system include the
Mustang, equipped with the 4.6-liter V-8, Mustang Bullitt and the 2009 Ford Escape/Mercury Mariner equipped with the 3.0-liter V-6.