Focus Fanatics - View Single Post - anyone using premium gas ?
View Single Post
Old 05-22-2012, 07:57 PM   #128
Kabigon
Focus Fanatic
 
Join Date: Jul 2011
Fan#: 88299
Location: Torrance, CA
What I Drive: 2012 sterling gray Titanium

Posts: 2,647
FF Reputation: 8 Kabigon Good Standing Member
Buy-Sell-Trade Rating: (0)
Quote:
Originally Posted by eweisbard View Post
If the engine is not knocking or pinging, there is no performance to be gained by octane alone.
Consider the 2013 Mustang GT (5.0L Ti-VCT V-8 engine)
Recommended fuel: unleaded regular
HP: regular fuel: 402 @ 6,500, premium fuel: 420 @ 6,500

Two questions:

1) Do you think that the 5.0L engine is constantly "knocking or pinging" when using unleaded regular?

2) Why don't you believe that is possible for the PCM to adjust for different octane levels?
Kabigon is offline  
    Reply With Quote