under what condiditons can i tune my 5spd?
do i need to switch anything as far as obd1 conv?
and if im running magnaflow catbak/dc 4 2 1 header/AEM CAI.
Will i see much of a diffrence? and would it be better to adjust when i hit VTAK? and also RED LINE! i know it wont be safe to red line all the...