2011 Expedition owner looking for performance/tuner ideas

mkirsch wrote:
That makes no sense... Install a tuner, then let the engine rev to 4000RPM?

Why not just let the engine rev to 4000RPM?

The OP is trying to keep the RPMs <3000, which just isn't going to happen.

The only way to get more power out of a gas engine is to run more RPMs.

Nope! Reread my post (if your referencing me?). I said the Triton loves to rev! Let it rev to where it makes it's power which is around 4k rpm! Also the OP had an issue with jow the trans handles the available power, the tuner from 5 star addresses those issues. I would constantly have to manually shift mine. With the tuner it shifts like you would expect a heavily loaded truck to shift.

That makes no sense... Install a tuner, then let the engine rev to 4000RPM?

Why not just let the engine rev to 4000RPM?

The OP is trying to keep the RPMs <3000, which just isn't going to happen.

The only way to get more power out of a gas engine is to run more RPMs.

5 star tuning will address those issues! with the Triton motors they love to rev! 4k rpm is not unheard of on the hills! my X will rev to 4k+ rpm on some of the big mountains! the V-10 and the 5.4/4.6 will rev all day long without question.

You should be able to hold one lower gear on flat highway at 65mph, around 2200rpm in 5th. You have similar gearing to me (if you have 3.73 axle), similar torque, and I have no problem holding 65mpg in 5th. Many people complain with the 6-spd trans prior to Selectshift that the trans hunts for gears a lot. This is a problem especially under load like towing as it generates more heat that holding any gear.

This scenario is typical. Accelerate to desired speed, trans shifts to 5th, then 6th. Truck slows down. Driver wants to accelerate which causes 2-3 gear downshift.

Per your OP, there isn't anything under about $1500 that will increase power noticeably under 3000rpm, even 2200rpm.

Buy a 2015 Expy with Selectshift or 2009+ GM SUV. ;)

jfeather wrote:
My issue is right around 3000 RPMs like APT mentioned. I run out of power/gear around 65 mph and since I don't have any power the truck starts to slow. The engine downshifts and kicks up over the 3000 and of course the power comes back but obviously fuel consumption goes way down after that. Is there a way to modify/adjust this.

Sounds normal to me. 7-9 MPG towing is about right.

The best thing to do for towing MPG's is slow down

Thanks!

Jeremiah

My issue is right around 3000 RPMs like APT mentioned. I run out of power/gear around 65 mph and since I don't have any power the truck starts to slow. The engine downshifts and kicks up over the 3000 and of course the power comes back but obviously fuel consumption goes way down after that. Is there a way to modify/adjust this.

Programmer/tuners for gas engines only affect the performance at wide-open throttle. If you run around with the gas pedal mashed to the floor all day, then they might be worth it. Otherwise, not.

Gears work by making your engine rev at a higher RPM at any given speed. More RPM is more power. The engine itself is no more powerful than before, it's just running faster, but it may be the solution you are looking for.

I would say few things under $1500 will improve power under 3000rpm where you probably want it. Gears are cheapest, then forced induction. I say save the $ for fuel or downpayment on an Ecoboost Expy.

Tuners on a gas engine are usually a waste of money just like a CAI. 5 more HP on your Expedition will equate to exactly 0% more towing capability.

Towing performance is more about braking and handling than pulling power. Might be cheaper to get a bigger rig than go aftermarket for every system involved.