Help po mga sir just bought a 2011 strada mt gls. Napansin ko po nung sinusubukan ko takbo ng truck na after mareach nya na 140km/h ay sobrang bagal nya na magaccelerate. As in kahit naka floor sa acelerator. Is there any tune up po ba for diesel engines? Or any process para gumanda ulit takbo nito?

Thanks in advance TSCP!