Hi i already have a 3' cat back revolution system on my car and am also going to swap the down pipe for a de-cat one dose any one have some good advice one what other mods I can do to get better BHP out of my car thanks

 

ecutek remap ( www.ecutek.com)

 

yup, remap, then after that your onto a larger money spend cos you'll have to do the turbo, fuel pump, possibly injectors as well