Why does the engine sound like it is straining when I step on the gas?

Hello, it's really hard to know via the Internet what you are hearing and feeling. You simply need to have someone professional near you at least hear and feel what you are noticing, so that you can get some advice and guidance. Most local technicians would not charge you to go for a drive or listen to a noise. Here is a list of folks near you who can help: https://repairpal.com/repair-shops/honda-repair-and-service-in-mansfield-texas This could be an internal engine, exhaust or transmission concern...or none of the above...