I recently bought a COBB access port and I'm a little confused on what tune i should install. Right now i just did the stage 1 93. Since putting the accessport on I have installed a mishimoto intake and boomba bov. Its a 2017 WRX premium.
just bought my first subaru wrx, and ordered 5w 30 vavaline (i think thats spelled right) its a daily driver and i dont want to rev it too much, only has 25,000 miles on it. Should i use 5w 40 next time