Yes, that's possible since max HP can be limited by many things. But if you look at the max torque point before headers and read the corresponding HP at that point, then look at the max torque point after headers, you will also see an increase in HP at that new max torque point. That's all I...
By the HP equation definition, at any given RPM point, if the torque increases so does the HP at that RPM. You have more HP at the RPM points that also had a gain in torque.
I don't even install the cover fasteners anymore. The cover stays in place just fine without them. Hint for everyone - don't go without the battery cover. The battery will get much hotter from the heat in the engine compartment if the cover is left off, especially in hot summer weather.
Only way any kind of warranty would cover the failure at this point is if you had some crazy long extended warranty on the car that covered it. I don't think Ford is going to do anything for people anymore with it being that far out. You could certainly call Ford and see what they say, they...
Pull the hose and check for oil residue inside the hose. If it's dry, you don't need a catch-can on the clean air side (the driver's side). That hose's function is to flow fresh air from before the throttle body on the intake tube into the crankcase to purge out the dirty crankcase vapors on...
To add ... at WOT, the pressure level in the intake tube before the throttle body (where the driver's side catch-can hose attaches, aka the "clean air side" of the PCV system) can still be lower than the pressure level inside the engine, and that's why under extended WOT conditions there can be...
I put an AC Delco "Professional Silver" 96RPS battery in my GT coming up on 6 years ago. It's still as strong as ever. Always keep it charged up over the winter time so it's never below 90% state of charge. You always been using the Motorcraft batteries?
Lots of heat kills batteries faster, and I see you're in Texas where it gets pretty hot. Keeping the cover on the battery box helps keep the battery a lot cooler from engine bay heat BTW.