i installed the armytrix full catless turbo back exhaust
its great, but i think for power going with 3 inch would be better
but for basic bolt ons its perfect especially with valvev control
i am going for max power on stock turbos
80mm intakes without sleeve so from 2.5 inch to 3 inch (much be tuned)
full DP catless
full ehaust
AMS intercoolers
AMS heat exchanger
lower pressure pump upgrade
stage 2 AMS hpfp
flex kit
pushing 500rwhp
i had the AMS closed and then switched to AMS 80mm
sound with 80mm is much louder, but i did notice that intake air temps are higher
depends on where you live as climate will vary
is there any power changes i did notice a bit more top end
initially i was looking for the proto wheels but for the price and offset you cant beat the nismo
offset and drop is perfect
i think in the future i can go 295 rear easy