Maserati Forum banner

1 - 9 of 9 Posts

·
Premium Member
Joined
·
726 Posts
Discussion Starter #1
Has anyone tried a tank of 100 octane race fuel (e.g. Sunoco's GT100) in your Maser yet? Curious if you noticed a difference in performance? Does the Maser's ECU "learn" calibrations for the new fuel (e.g. would it run poorly when you switch back to 93/94)?
 

·
Registered
Joined
·
513 Posts
oddly enough, I've used REG unleaded the past 2 fill-ups, 87 octane. my car has not run better.....No pinging....
 

·
Registered
Joined
·
390 Posts
Modern FI cars won't ping because the ECU retards the timing to make up for the lesser punch of the lower grade fuel. But the leaner mixture is bad for your cylinder heads in the long term, the leaner combustion can cause cylinder blow-by and burnt heads. Stick with the 91 / 93. My 968 ended up losing a good deal of power when I moved to CA because it was designed to run on 93 octane minimum and the most you can get out here at standard pumps is 91.

As far as the 100 goes, I dunno, but 110 octane race fuel (VP for instance) has additives that help increase power on their own--the timing and whatnot doesn't need to be adjusted. That's why racebikes can use it when they have open-loop FI systems, the system doesn't need to recalibrate itself to the different fuel. I don't know if the 100 gets to 100 octane through this type of additives or if it's just really pure fuel. I suspect it's the former though. Can't hurt to try though--the worst that can happen is nothing.
 

·
Registered
Joined
·
30 Posts
Rick,
My understanding is that your computer will quickly adjust to the octane of the fuel you are using. I wish I could find 100 octane unleaded near where I live. There was a Union 76 station that had it in 5 gallon containers. They quit selling it when I had my twin turbo Porsche about a year ago.
 

·
Registered
Joined
·
681 Posts
I would NEVER run 87 in the Maserati and 100 would be a waste of money since it's not needed. But suit yourself.
 
1 - 9 of 9 Posts
About this Discussion
8 Replies
7 Participants
maserati of minneapolis
Maserati Forum
We’re a forum to discuss the Maserati Coupé, Spyder, GranTurismo, Ghibli, Quattroporte and more!
Full Forum Listing
Top