hi i have bought a white 2010 rs with panorama ...tha car has kw variant 3 and acrapovic plus header ..the previus owner had cut the acra and put a free flow cat and a small resonator and reprogram it ... i trye to make the car as new i have detail the exterior and interior-
put a pipercross panel filter and wondering if there are any gains on make the exhaust as it was (cut the free flow cat and resonator and put a decat in place ) ...does it need reprogram again ? is it worth the effort or there are minimal gains ? thank you
put a pipercross panel filter and wondering if there are any gains on make the exhaust as it was (cut the free flow cat and resonator and put a decat in place ) ...does it need reprogram again ? is it worth the effort or there are minimal gains ? thank you