Whats the difference in power between a 2.5" and 3" piping on a 2007 SS S/C?

because i went with 3inches and some people say i should have gone 2.5..and some say 3 inches is good...i do not know the difference though..i would think 3 inches is better..more airflow..but..idk..help? lol

 

Depending on your mods and plans you may have made a good choice.

So what are your mods...and plans?

 

3" is overkill for the amount of power u would be putting out, maybe on a nicely tuned 2.7" pulley and some e85 3" would be justifiable, but anything else, 2.5 is were u should be

 

right now all i have is a cold air intake..and well...the exhaust


im planning on going ottp stage 1
2.8 inch pullies and all that good stuff..i just need to research it more..cause..i cant not use my car..idk if i wont be able to use it til i get my pcm or pcu or w.e. it is back lol

come on people...suggestions? opinions? help me out lol please

 

Even on the 2.8, 2.5" is enough.

 

whats the difference in power

why do YOU think 2.5 is...better...than the 3"?
thanks btw

 

back pressure.

 

If you plan on running a small pulley go with a 3inch exhaust so you have less boost. It will be less stress/strain on the motor too. The less boost the better.