I was perusing the technical specs and Ford is recommending at least 92 octane for the Boss. I haven't seen an octane requirement this high before. Is that the same for the 2011 5.0 or GT500? My 07 was 91 with the factory tune of course.

I'm optimistic that maybe Ford tuned this a little more aggressively from the factory. I just hope it's tuned for E10 as it's hard to find 92 without it around here. There are a few stations with 93 E10 and only one with straight 93. I guess once we get it on they dyno we can see what the A/F looks like, but E10 will lean it out some.

 

Only 91 octane available here in CA.

 

Yikes. I wonder if there are knock sensors on this motor? Might need to run some Torco out there. I'm just going off the tech specs from Ford for their recommended fuel.

 

Which document are you looking at? The one I have says 91 octane, and two magazine articles I checked a bit ago also said 91 octane.

 

It wouldn't make since for the boss to be over 91 since 93 isn't available everywhere and they couldn't sell cars in California. The LS might be there because it was really designed for the track and I think its probably an adaptive spark set up that senses octane level. Kind of like the gt and bullitt cars. For optimum performance use..... etc.

Respectfully,

Roger

 

The info Ford has on the data sheets for both models are 92, CA has 91, you are up on us. Alaska has only 90, so I see mixing some Torco all the time! I tried to point out at times, that a large number of new cars and motorcycles require 91 or 92 or void the warranty and are braking the EPA law! The dealers here do not talk about that! Also the EPA could arrest you for not using the right octane??? They tried to give a person a 2 year federal prison sentance for plugging in a tuner once on a 03 Cobra that the car service personal saw and reported. I am not worried about it, just will add torco as needed and use the RED KEY.

 

Here it is right from the spec sheet:

 

Those are dated specs since it still says 440 hp. Let's hope the octane rating got changed.

 

I don't believe it has changed. The stated (est.) peak horsepower rating is still 440 hp from everything I've read. The TracKey (est.) peak horsepower rating is 444 hp.

 

Check your order guide, the car was certified at 444 hp without the TracKey.

 

Ok. I think I see that now. The more I've read about Trackey the less I think they are telling us. Now it really makes you wonder if peak hp is changed when I look at the types of changes they make to the tune. I hope there's more info forthcoming on this after the 1st of the year. It seems like a Christmas present they aren't letting us open just yet.

 

It's noted on page 1 and 19 on the order guide. Page 19 shows the gas mileage etc. You got a 1% increase in hp before applying any mods. Merry Christmas. So far the official word on TracKey is no incrase in hp. I find this disappointing but the increased torque curve should translate into quicker times.

 

The copy of the spec sheet I have shows 91 octane

 

Well my 2000 gt has knock sensors and will retard timing when a knock is sensed....I think there are 2 or 3 on mine....and you will be fine running ethanol polluted fuel in that sweet ride of yours as long as the octane Rating on fuel is appropriate

 

This isn't a big deal..BMW M3s along with 997s require 93 octane for rated hp. If you run less than the recommended octane, the knock sensors will dial back timing. This is the case for the Boss as well.

Dave

 

That is what I am counting on. Knock sensors will kick in and pull some timing if it really needs it. I think that is why there are two seperate HP ratings on the GT's 5.0, 91 and 87 gas. The Boss should be the same adjustments as needed. I would not want to push it though.

 

http://pure-gas.org/index.jsp?stateprov=FL

This has been a question of mine. I am planning to run pure gas at 90 since there are only 4 stations close to me that sell 100% gas. All carry only 90. I figure 90 is better than 91 with E10. Any opinions?

 

Good to know. I had posted an earlier thread about knock sensors but didn't get a response. I wish we had them in the 07-09 GT500s. If I understand correctly they were added in 2010+.

 

Knock sensors have been standard in most if not all EFI engines since the 80's. What is very different about the new 5.0 and the 3.7 is the way the ECU controls the spark advance. Previously the advance was set according to a look-up table, with the timing getting retarded if the knock sensor detected pre-ignition. The new ECU now continually sets maximum timing using the knock sensor as an input.

 

Thanks for the clarificaition