I curently have the flowmaster amreican thunder cat back on my trans am , but I have herd that it does not really do to much for the car. I was woundering if anyone has experiance with the SLP LOUDMOUTH, and if that would be a better choice for the car. would that make more power?

 

Whatever 3" catback system you have, there is no difference power wise, just sound and looks. And of course price.

 

I am not much of an SLP fan but the Loudmouth sounds good on every car I have heard it on.
Got a guy runnin around here with an LS1 with LTs and the LM and it is the meanest, loudest LS1 I have ever heard.