Yep... factory liner installed by the dealer. And yes, I'd believe the paint is certainly sub-standard. More rock chips in the hood in 7k miles than my 4Runner with 120k.
My Ranger & RS are both Absolute Black... the lower part of the front bumper on the RS is absolutely trashed at 20k miles...
After my time in the truck, I think it's
A). The engine rocking back/forth from compression after coming to a stop, or
B). ABS/Brakes locking in the braking force due to engine vacuum going away
If you can find a tuner who really knows how Ford's torque control strategy works (it's less likely a direct fueling issue, more likely a hiccup in torque command) then they can absolutely clean up the response. Most production calibrations are probably 98%... it'll take another year to get that...
Well, 3000rpm is what I mean by low speed. Below that, there isn't enough air mass to push the turbo, so you wont get gains with any tune beyond the few degrees of timing they'll likely dump in.
I touched on the differences from other 2.3s somewhere else in this thread. Trucks have more...
Well, I'm sure you can add insulation. Dynamat or similar. No idea how much you'd need to make an impact. The Lariat engine cover helps if you don't have one, but obviously doesn't fix it (I still hear it in my Lariat.)
If you can find a tuner who knows what he's doing, he can turn off...
The sound that the injectors make changes dramatically as they switch modes. They absolutely sound like a buzzing speaker behind the dash when running in split-shot mode.
Just ripped out my drop-in bedliner... after 5k miles the bed paint was worn to bare metal in several spots. Now I have a Line-X with a Bedrug overtop that I'll remove when hauling dirty stuff.
It would be great if someone can log torque and MAP response to pedal input before & after the throttle change for actual objective data. It'd help us out. Any benefit would show in the airflow data.
Well... the PCM runs closed loop control on manifold pressure, so you'll control to the same MAP regardless of what throttle you put in. So you if put in a bigger throttle, the PCM will command an open loop angle, see that MAP is wrong, then adjust the angle down. All your tune is doing is...
That's good you don't notice a difference. Throttle PID control is likely working overtime, but that's it's job. You might notice part pedal weirdness, going from mid-pedal to deeper, but the trans delays cover up quite a bit of it.
If you returned to stock, there are indicators (OBD monitor completions are reset to zero, key cycles are reset to zero.) The dealer can't necessarily prove anything, although, these '19+ Fords are modem-connected and they're sharing an awful lot of data back to the company... I'm not sure what...
Not only are the electronics different, but the stock engine calibration has many maps that characterize the stock throttle plate flow & behavior to correspond with wastegate/turbo control and drivability. You're throwing that away for more flow (the throttle isn't the bottleneck anyway.) Unless...