Im considering putting 3 inch straight pipes all the way from the headers, my only concern is loss of torque because Im not using forced induction, what do you guys think, should I do that or have one straight pipe from the y pipe, I guess my real question is what is the best exhaust set up?

 

You will not pass state inspections or emission testings, and the car will smell putrid. You will gain power (after a recent debate it has been discovered that backpressure is not needed), but I suggest going with a 2.5" pipe unless you play to use boost.
-Cyrus

 

I would not go with the 3" piping without forced induction.

This excerpt is taken from http://www.warnertechnology.com/Cars/backpressure.shtml
"A smaller-diameter pipe geometry will tend to keep the flow rate up, but it will also lose heat more quickly (less exhaust gas per linear inch of pipe). However, a large pipe will slow the velocity due to expansion. Worse still, the exhaust is constantly cooling from the moment it leaves the cylinder, meaning it’s getting denser and slower. See the problem here? It’s all about compromises. The proper pipe size is going to be influenced by the flow rate (volume rate, which is related to RPM and engine displacement), exhaust velocity (again related to RPM), exhaust temperature (constantly changing, and as high as 2,000&Mac251;F, if I remember right), and undoubtedly an array of other factors. All of this is dependent on the application: is this a street car, a race car, or something in between? Where will the engine spend most of its time? Idle, full throttle, part throttle?"

See what 10sec of searching can do for ya

 

Thanks for the advice

 

If im going to add a charger in like 6 months should I still get 2.5s instead of 3s until I get a charger or just get 3's?