ok well there has been a lot of discussion about exhaust sizes in the past and i tried searching, but all i can find are b/d series topics. I have a k20a2 with aem v2/DCRH/ 2.25 exhaust/k-pro i want to hit 200whp with tunning so should i upgrade my exhaust to 2.5? or is the 2.25 good enough? i have no cat and no resonator, im tunning tomorrow afternoon, so if i do need to change it i will change it in the morning.

if this thread isnt suppose to be here then let me know thanks

stock internals and stock head

 

3" gives you room for more mods later on

2.25 is way too small