Dade City's a bit further out in rural Pasco County, but that's exactly what mobile tuning is for — no need to make the drive in if it's easier for me to come to you.
A lot of Dade City trucks are working trucks first, whether that's hauling equipment or towing on the regular, so reliability under real load matters more than peak numbers.
If you'd rather meet up in person, the Lutz area isn't a bad drive down 301 or 41 — either way works.
As the Pasco County seat, Dade City has a historic small-town feel surrounded by citrus groves and farmland — a lot of the diesel trucks out this way are doing real agricultural work, not just commuting, which changes what actually matters in a tune.
US-301, US-98, and SR-52 connect Dade City to the rest of the county, and mobile tuning covers the surrounding rural areas just as easily as the more built-up parts of Pasco.