I have a 05 acura tl and im exhaust a racing sound. I changed the mufflers but the sound is still the same?

 

Can you rephrase that? I'm not sure if your exhaust sound like normal or like racing (which i guess you meant like a civic with a cherry bomb, in that case you have a hole). If you want a "racing" sound, without sounding like a 16 year olds civic, i found the perfect balance (which to me would be similar to what a G35 sounds) by removing the resonator. It sounds a bit more aggressive, but only when you give it more gas.

There are threads that show you how to remove parts of exhaust in stages to sound progressively louder.

 

straight pipe everything