PSI Power’s Transmission Edition performance modules are built to optimize both your transmission for smoother, more efficient power delivery. Designed for heavy-duty trucks and equipment, these modules work in harmony with your transmission to reduce strain, improve shifting, and extend component life. With simple plug-and-play installation and multiple power levels to choose from, Transmission Edition products give you the confidence to shift with ease, cover more miles, and keep your truck performing at its best—without sacrificing reliability.