Don't listen to manufacturer claims, because OF COURSE they're going to exaggerate or just plain BS you. They ARE trying to sell a product after all...

Just look at even those that sell simple tonneau covers. They STILL claim a 10% improvement in mileage even though that's been debunked over and over again.

 

i think it was the combo of intake and level. the fuel is the same. the driving may have changed cause of the difference in feel with the 2" lift. as far as the freeway it was driven the same. and i did get 22.2 mpg. used to get 17.5 on the freeway. stayed between 65-70mph for the most part.

i am thinking about getting a dyno. $75 to see if there is any difference from stock published numbers.

 

It's not that easy though, because the published SAE power and torque figures used in the vehicle brochures are obtained with an engine dyno and no vehicle drivetrain. There will be drivetrain loss when you put your truck on a chassis dyno. These losses can only be estimated without additional instrumentation, so you won't know the true power your engine produces at the crank. Best to use chassis dynos for tuning and to see back to back differences in performance on the same vehicle with different parts, not for an absolute measure of engine power.

 

Of course your mpg will increase with certain intakes. They are leaning out the engine. You trade mpg increase and slightly better power with greater chance of blowing up your engine. There is more to it than that, but that statement is absolutely true. Install them at your own risk, and don't think because you don't read about engine detonation on a car forum where nobody likes admitting they did something wrong that it isn't true.

 

Just dyno before the mods then after the mods and presto - real world power numbers to the wheels. Any reputable dyno will provide SAE corrections.

 

Yes, that will tell you the power to the wheels, but Ford doesn't advertise power to the wheels, so that makes it hard to compare chassis dyno numbers to the advertised numbers obtained on an engine dyno. This is why I said it's tough to get an accurate number for absolute power at the crank for a stock truck. SAE corrections are for environmental conditions, not drivetrain losses. You could dyno before and after mods and add that same power delta to the advertised numbers to get your new power at the crank, but the member I was responding to just wanted to check the power of his bone stock truck.

 

so pretty much it is pointless to get the truck dyno'ed? i can't take off the exhaust cause i haven't had the stock one for a few years now. and don't feel like removing the intake just to see the difference. or just get it dyno'ed to see what it has?

 

You could dyno your truck and talk to the shop (or forum members) and see if they have dynod other similar stockish trucks and then compare to those and see if you're at least at a similar level.

 

So you increased drag, received no benefit from the intake or exhaust other than sound and increased MPG? That is an incredible defiance of the laws of physics. I want me some of that

Unless you increased the size of the TB the size of the hole that air is flowing through is the same. It's been proven over and over that a catback exhaust does nothing but change the exhaust note (and I have both an intake and an exhaust).

Unless you got a tune you most likely LOST mpg and overall speed. I'd put a benjamin or two on back to back dyno runs with an intake and catback alone showing anything more than 1-2% increase in power. The loss of aero from the lift likely negated that or even put you in negative territory.

I know everyone wants to believe that what they spent money on makes these super awesome gains, the reality has found otherwise.

 

All correct and good info. Sorry thought you were replying to the OP's question!