If you are just getting the exhaust tip then you will only be getting the sound. There will no gains. It will require welding to mount this. If you choose to use bigger piping and a tip you will recieve some gains but nothing like an actual axleback replacement that TSRM, TRD
, and rod millen sell. All in all it would I highly recommend you save up your cash and buy and axle back that you can install yourself and has a lot more gains.