Many Toyota 4Runner owners looking to boost their vehicle’s performance naturally turn to engine tuning. Software like HP Tuners VCM Suite is a popular choice for enthusiasts wanting to optimize their engine control unit (ECU) and potentially increase horsepower (hp). However, the journey to enhanced 4runner Hp isn’t always straightforward, as one user on a popular forum discovered.
The original poster (OP) expressed frustration regarding HP Tuners support for the 4.0L V6 engine, commonly found in 5th generation 4Runners. They noted the seeming contradiction that older Tacoma models with different engines sometimes receive support while the stalwart 4.0L in the 4Runner and FJ Cruiser appears to be overlooked. The core of the issue seems to stem from the Denso ECUs used in these vehicles. Reading stock files, crucial for tuning, isn’t a simple OBD2 port read; identification is possible, but accessing the full calibration data is more complex.
However, the OP shared a valuable workaround based on their experience with an FJ Cruiser, which shares the same engine family. By submitting a support ticket to HP Tuners, including detailed vehicle information, MPVI2 Pro and VCM Editor details, and crucially, a stock calibration file (obtained via BitBox Virtual Read), they successfully gained beta support within three days. This suggests a path forward for 4Runner owners facing similar roadblocks. While official support might lag due to the multitude of calibration versions for these vehicles, providing HP Tuners with a stock file from your specific 4Runner could be the key to unlocking custom tuning and achieving your desired 4Runner hp gains. If you’re eager to tune your 4Runner, consider following this user’s approach and engaging directly with HP Tuners support.
