What's next?

[djock12]

Hello forum members, I recently traded in my 2007Eddie Bauer EL with 308000 miles on it and got a good deal on a 2017 eco boost Limited. Loving it so far. I have been doing research on the oil blow back and using a catch can as well as checking out the tunes for the engine. Looking for some guidance on should i get a catch can first or go with a good engine tune. My current expy has about 56k miles on it. Looking forward to your constructive replies.

thanks

 

[Boostedbus]

I’d go with a catch can first for sure. There is a catch can thread on here if you search. My opinion is that will give your engine more longevity versus more power and possibly less longevity with a tune.... of course depending on how extreme the tune is.

 

[chuck s]

"Tune" is as close as your nearest gas station. Run 93 octane rather than 87.

-- Chuck

 

[djock12]

"Tune" is as close as your nearest gas station. Run 93 octane rather than 87.

-- Chuck

I ran 91 yesterday for the first time and definitely noticed a difference. I ran sunoco.

 

[djock12]

I’d go with a catch can first for sure. There is a catch can thread on here if you search. My opinion is that will give your engine more longevity versus more power and possibly less longevity with a tune.... of course depending on how extreme the tune is.

thanks, I was thinking catch can first as well.

 

[Trainmaster]

Does anyone think the V-8's operate differently on premium gas?

 

[JExpedition07]

Does anyone think the V-8's operate differently on premium gas?

The Ecoboosts power ratings are done on premium gasoline and when lower grade is used the timing is adjusted and power is lost. That is why there is a perceived difference on higher octane.....because it’s made it run on it. The 5.4L is made to run on 87 octane in most variations....on some special edition vehicles it sometimes had a higher compression ratio requiring 93 but otherwise no.

 

[Trainmaster]

What I'm curious about is if the 5.4 will advance timing with a premium gas. Will it advance the timing until it detects detonation or pinging? If it does, then a premium gas will give better performance. If static timing is limited to what an 87 octane is presumed to support, a higher octane gas would actually waste money and give poorer mileage.

Not intending to hijack the thread -- sorry...

 

[jeff kushner]

I think the 5.4 wasn't adorned with the surrounding tech to make advancing/retarding per octane rating possible however it likely came with detonation-sensors to retard to prevent engine damage. I never had need to work on either of mine other than doing normal stuff so I'm not positive.

jeff

 

[JExpedition07]

The 5.4L 3V in the 3rd gen does have VCT technology unlike the older ones but you would have to pretty much raise the compression ratio to effectively use the 93 octane. Remember the higher octane rating is only resistance to detonation. Therefore the higher the compression you need more resistance so predetonation doesn’t occur. You would have to have a variable compression engine to really make this work. Again the ecoboost is only retarding itself when anything lower is used, it cannot adjust anything to run better on higher octane it only retards itself less......if you get my drift. The engines are pretty much built to run at a certain octane depending on the compression ratio of the engine from the factory and they are only made to retard themselves if a lower grade is used.... retarding makes the explosion less powerful in the combustion chamber. I don’t know of any engine that can change its compression when a higher octane fuel is used......The EcoBoost certainly cannot and nor can the 5.4L. The 5.4L does have variable cam timing and the camphasers can retard and advance but that is for enhancing the powerband and fuel economy. Anyway guys this thread isn’t per this conversation.....let’s not derail the OP too much lol.

 

[chuck s]

I never noted any performance difference running 87 or 93 octane in my 2007 Expedition 5.4 V8 in the 10 years I owned and towed with it.

I have a full tank of "92" octane in the 2017 this morning in preparation for a 2 or 3 hour tow tomorrow. 22 gallons of 93 on top of the 6 gallons of the truck's normal diet of 87 still in the tank. Will go back to a normal diet of straight 87 next week as the truck has more than enough power for normal driving with this fuel.

-- Chuck

 

[lbv150]

In my '16 Expy I have only run top tier fuel 91-93 and the truck drives like a sports car, very fun to drive and blows other vehicles away. As for the so called oil problem on the intake valves I heard this was only a problem with early engines and Ford made some changes. However every 20K miles I run Seafoam spray into the intake to keep the area and valve stems clean just incase....

 

[chuck s]

I suspect you haven't driven a capable sports car (or even a Miata) in a long time. I've got a sports car and the Expedition is no where as fun to drive.

The 3.5 EcoBoost undeniably pulls harder than the 5.4 V8 especially if you can manage and produce an early turbo spool.

-- Chuck

 

[lbv150]

I suspect you haven't driven a capable sports car (or even a Miata) in a long time. I've got a sports car and the Expedition is no where as fun to drive.

The 3.5 EcoBoost undeniably pulls harder than the 5.4 V8 especially if you can manage and produce an early turbo spool.

-- Chuck

1985 Mustang GT....will blow the doors off most things on the road including a Miata. LOL

 

[JExpedition07]

Make mine a 5.0

 

[1955moose]

I had a 85 mustang GT. Although quick for it's day, at 210 hp, it doesn't even come close to today's mustangs/Camaros/ challengers. The weakest of those puts out 400 horsepower, the best 750. Our Suv's were never designed to be a canyon Carver. Especially a lifted four wheel drive version. You wouldn't expect a 400 lb man/woman to be a track star!

Sent from my N9131 using Tapatalk

 

[NASCAR Mike]

I have the JLT catch can and the JMS Boostmax. On 91 octane it will add 5 lbs of boost which translates to about 89HP and 81ft/lbs of torque. These numbers were based on a 2014 F150 3.5 EB on 91 octane. Using 93 octane might give you a little more power. I have it on my 2017 Expy and the increased power is awesome. Instead of 365HP and 420 ft-lbs torque I am closer to 450HP and 500 ft-lbs torque - almost like the Ford Raptor!

The great thing about the JMS Boostmax is that if you need any warranty work, you unplug the Boostmax module and there is no trace in the computer of it being reflashed like the SCT X4 tuners do. When the dealer sees a reflash they know you have a tuner and may deny your warranty claim.

 

[mquick5]

Any pics of the jlt catch can install. I have a Moroso oil separator on my mustang. As far as I know catch can and oil separators are the samething, but others don't see it that way.

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[NASCAR Mike]

Here are pics of my JLT.

 

[JExpedition07]

Here are pics of my JLT.
View attachment 26435 View attachment 26436 View attachment 26437

I know it’s been said before mike but great job on the engine cover. With the color it looks nice.