Install the No. 2 exhaust manifold heat insulator first using 2 bolts that should attain 12 Nm (122 kgf-cm, 9 ft-lbf) of torque. After mounding the 4 bolts of the No. 1 manifold converter insulator it should be torqued to 12 Nm (122 kgf-cm, 9 ft-lbf). The exhaust manifold installation requires the use of new gaskets for nuts which must be tightened in the given sequence with a torquing value of 37 Nm (377 kgf-cm, 27 ft-lbf). After bolting the manifold stay using a nut and torquing it to 44 Nm (449 kgf-cm, 33 ft-lbf) you must install the No. 2 manifold stay using the same bolt and nut procedure and torquing force of 44 Nm (449 kgf-cm, 33 ft-lbf). Mount the front exhaust pipe by applying 4 bolts and installing two required compression springs. The procedure begins with sensor installation for the air fuel ratio followed by application of the No. 1 exhaust manifold insulator followed by exhaust gas leak inspection before the No. 1 engine under cover installation.