hoping to go back and get retuned i posted on the first page with 329whp and 311wtq
but just installed grimmspeed uppipe with tial 38mm mvs ewg. hoping to pull another
20whp or so out of it and get me to my happy 350whp mark. do you think this is possible. going to still run 20psi, right running off spring pressure which is 16psi untuned but still pulls hard and sounds amazing.