4k-5k. Just doesn't have any pickup to it. 08 Ford programmed a breakin into the pcm. They might have done it here as well.

Its not the rpm geek monster like the 4.6-6.8s. Wot you hit 4k for a palse the it hits 5kish but quickly slapped down. Now the rpms appear to come alive bit your momentum doesn't. The truck is very sluggish. My 5.4s was power on demand like the v10 I've drove. In 08 ford programed a break in on the pcms for the 6.4s. Could it be that Ford done it again. We really the truck ust disapointed w/ the drive train.j

 

My Dad and I have a truck repair business. Repairing mostly all Ford Powerstrokes. I do most all the wrenching, and Dad oversees the rest of what is required to run a business.

 

I remember we covered it like 4000 replies back?
Your truck is no match for my 10,000 lb dually with low gearing to move locomotive

 

Which would you rather tow with? The 6.4 with more torque, or the 6.8 with more HP?

Or the 6.7 with more torque AND more HP?!

 

NO, Ford did NOTHING like this.
There is NO breakin programming-NONE. This is a myth perpetuated by those that do no understand the control system.
JL

 

Well its Ford's myth then. Funny then is 4 dealers told me the same thing. I know 3 guys that their truck woke up after a break in period. Sorry if I give no credit to your statement. I know for a fact our plant manger's truck acts different. I test drove that truck for 4 days and it was lame. He ended up buying it. I use to laugh at him cause I thought it was a selling scheme to sell the truck. He gets to laugh now. That is a totally different truck than when he bought.

 

Ford Dealers are absolutely CLUELESS as to what programming is on the PCM of the vehicles they sell, and the Service Depts are the same.
What these people are experiencing is simply mechanical "break-in" of the various components, nothing more.
I know the facts, and there is NO TYPE OF BREAK-IN PROGRAMMING-PERIOD.
JL

 

When I had my Dakota A Lot of the Dodge guys were saying the same thing when the "HEMI" came back. It was not true then either.

 

And to beat an Old Horse once again, but cleaning up my office I found my old dyno run that has No Torque Numbers they had to Calculate it afterward because the sensor that measured engine RPM stopped working.

 

Just curious, How many of you v 10 guys have owned a psd. I don't mean driven one before. I mean actually owned one. I have owned superduties with a 6.8 and 5.4 before so i know the comparison between the gas and diesel.

 

I especially like the people who say the v10 will outpull the 6.4 even though every test says the opposite and they have never driven the 3v v10 let alone the 6.4.

 

Don't you get it? Its horse power that turns the world. Its amazing how the thread is about 1 engine vs another and every engine in between and gears and transmissions have came to play.

 

I love the people who think torque is just a made up number to sell vehicles. How many times have you horsepowered your lugs on your truck?

 

Love it. 628 pages of my is bigger and better than your and the guy wanted to know is whats the differences between the two and why would you prefer one over the other. Heres the difference. One runs on gasoline and one runs on diesel fuel. A gasoline engine can't really be compared to a diesel engine. They absolutely are not even the same creature. Ya the end result is the both spin a transmission. There is a reason trains don't run on gasoline. There is a reason most semi's dont run on gasoline engines as well. Its obvious to most of us. There is a reason for a piston plane and a reason for a jet plane. They are the same but not comparable. A male and a female are mostly the same, but not comparable. Some of us like the idea of 10 pistons spinning a crankshaft because its different than the old standard 8 piston thing. Some of us like the idea of a turbo pumping loads of air into a cylinder over the amount naturally intended seeing the end results of a gain in boost and torque.
Its a fun and interesting debate but in the end there cannot be a true whats better gas vs diesel result. Unless you have rules and boundaries that you can't cross to create a better result for your side of the debate. Besides, electric would win hands down in any gas vs diesel vs electric.

 

Everytime I'm in a hurry! lol