Recent content by TMac

I think you're talking about miles-per-gallon (MPG)? If so, your tunes aren't going to make any real difference to steady state cruising. As @GooseTuned wrote, "Best MPG is your right foot".

I went through the docs a few years ago on my '20. No oil level sensor. Might have changed on new models, but I doubt it.

i took a trip to Florida back in 2022 with the family. All 6 of us in the ST along with luggage, etc. On the trip there and back, I measured at every fill up and also with the ST's gas mileage. Over the course of about 1500 miles I averaged 25mpg (hand measured) while the ST posted ~26mpg. I...

Not picking on anyone's observations, but consider that differences in atmospheric pressure, temperature, vehicle mass (more passengers or cargo), grade, and wind velocity can have a big impact on your fuel mileage even over what might appear to be two identical routes. Also, is the cruise on...

I know it's always tempting to believe certain things, but getting better gas mileage on a modern engine is wishful thinking. This is because if you consider some steady-state operation- like cruising down the freeway- you're only at part throttle and likely at 1500 rpm or so. At that airflow...

No one should buy a "diffy stiffy". Here's why

You have it backward- perhaps you are not understanding. The taper is from a smaller diameter to a larger diameter. And no, the exhaust post-turbine does not need any sort of "rifling". The exhaust you picture seems to be one that divorces the wastegate exit from the turbine exit. A...

No, that is a splitter or divider. A diffuser is a conical section (think ice cream cone being fed from the bottom) that extends from the turbine exit. For example, if the turbine outlet is 3", a diffuser would be a transition from 3" (turbine exit diameter) to say 5" (cat entry diameter) over...

You wrote this- and even emphasized it in bold. Everyone who says the same is missing the points I seem incapable of making: (or no one bothered to read the post!) 1. Once exhaust gas runs through the turbine, it loses energy having imparted it to the turbine wheel. Meaning a larger exhaust...

If you watch near the end of the video, the presenter also talks about the "patent pending" tailpipe which according to him actually creates a "vacuum". Notice that he doesn't present any evidence of this, nor is there any mention of how they measured this. The only thing "patent" about it is...

Bigger is NOT better. Although nothing is said in that video is false, they are trying to sell systems. However, using giant pipes gives up inertial flow which is important. For every flow rate/temperature, there is a size of pipe that would be optimum. He's right in that an engine (other...

BMW has Valvetronic- which provides adjustment for valve duration and lift in combo with variable valve timing. Ford only has the variable timing. That's the main difference in mileage.

Just an FYI, platinum is 50 times more resistant than copper, so I would expect platinum to gapped more tightly. Uses of platinum, iridum, ruthenium, etc are skewed towards longevity rather than any performance benefits. Using copper and experimenting with as wide a gap as possible without...

An extra .030" is way too much. The "spark kernel" has nothing to do with the heat range of the plug. If you're of the mind that a colder range plug is necessary buy them. But it's not needed, especially if you're running any type of ethanol blend like E30. A simple explanation.

Air/water intercooler is inferior in every way to an air/air cooler UNLESS- you have some way to chill the water below ambient air temps. As far as an intake manifold goes, the stock manifold doesn't have any glaring problems. Increasing the plenum size or changing the manifold runner length...