i ve got above car, how much more bhp will i get if i add a air filer/sports cat ex/back boxes/3 to 1 ex manfold?.
do u think it need chipping after, and if so how much more bhp that add?.
i know it depends on the stuff u put on but there must be a average.....
99 ek vti (160bhp) 3 door hatch....
