Hey guys, I'm sorry if I'm beating a dead horse here but i havent been able to find the information that I was looking for and I am going to be putting a new exhaust on my car soon. If I go with the 2.5 inch exhaust system as opposed to just putting a performance muffler on the stock exhaust, am i going to lose back pressure? I have heard that by keeping the stock exhaust and just upgrading the muffler it can be more effective. I am looking for a better launch off the line, meaning i dont want to sacrifice torque for high end hp. Can somebody tell me whether or not i should go with the 2.5 inch piping or just the muffler. Thanks for your help.