My S4 exhaust MPEG clips: The stock & Neuspeed Generation 1/Borla were taken from the exact same location/distance. The VM2 & VM3 were taken as close to that same position so that a somewhat relative comparison could be made between all 4 exhausts. Exhaust install pics are here: Neuspeed/Borla / UUC VM2 / UUC VM3 Stock • Idle/Revving (348 kb) Neuspeed Generation 1/Borla • Idle/Revving UUC VM2 • Idle (343 kb) • Rev to redline (343 kb) • Revving to multiple RPMs (343 kb) UUC VM3 • Idle (343 kb) • Revving to multiple RPMs (344 kb) • Acceleration from stop - VM3 + piggie pipes (192 kb) • Drive by - VM3 + piggie pipes (176 kb) Thanks to Mr. Piggie for the following 2 clips: • With "Piggie pipes" clip 1 (1.31 MB) • With "Piggie pipes" clip 2 (1.29 MB) APR v.1 exhaust: (courtesty of Hugo M) • reving engine (922 kb) • passing through a tunnel (890 kb) MTM, UUC VM1, & UUC VM2 mp3 sound clips: (from the former audis4.com) • MTM exhaust (316k) • UUC VM1 (336k) • UUC VM2 (432k) Other S4 exhaust links • Flyboy's Supersprint exhaust clips • DonP's Forge/Milltek before and after multimedia clips, plus review • Taner's UUC VM2 exhaust clips • Greedspeed's Neuspeed Generation 2 exhaust clip