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Audi S4 518WHP-AWD Twin Turbo GT25r Unitronic Tuned
Here we have J-P's Audi s4 re-tuned on Unitronic's Dyno! Check it out, there is no rollercoaster that can even comes close!

Audi S4 500BHP 0-160 MPH Topgear AirStrip
MRC500 2000 Audi S4 0-160 on topgear airstrip - Cisco Noseball

Audi S4 Dyno
Amazing Dyno..with a HKS BOV

GURUMAN 10.832 @ 135.54 mph AUDI S4
Still testing, still 24 to 25 psi on pump gas. gt28rs twin turbo 3.01L Rombotis Dynodoc

504 bhp MRC s4 2 to 4th
through the gears in a 500+bhp s4

Audi A4 B5 Tuning
Audi A4 B5 Tuning powered by VAU-MAX.de & PS|Grafix

AUDI RS4(517hp) vs AUDI RS4(430hp)
Teste Realizado pela Revista 4 Rodas Tuning volume 6 15/08/2004 No caminho para a pista de testes em Limeira, no interior de São Paulo, a tranqüilidade a bordo dos carros é absoluta. O RS4 desliza suave a 120 km/h pela rodovia dos Bandeirantes, perfeita para um calmo passeio dominical. Já na pista, a história é outra. Com o pé na tábua, as rodas grudam no chão (grudam mesmo, não é exagero) e o ponteiro move se para a direita com uma força brutal, mas é uma brutalidade tão afinada e tão harmônica que, mesmo a 230 km/h, tem-se a sensação de segurança total.

10 Second Audi S4
First USA S4 in the 10's.

Audi S4 widebody avant with twin GT28RS turbos
Audi S4 widebody avant with twin GT28RS turbos

B5 Audi S4 quattro VAST Stage 3 FrankenTurbo Borla 0-60 mph AWD Launch Control & Drift...
A video compilation demonstrating the 2-step "launch control" feature of my custom VAST performance Stage 3 Frankenturbo tune. When the vehicle is stopped, the rev limit is set at 4,400 RPM for consistent launching. While holding this RPM, the turbos can produce up to about 6 psi with no load. With this setup, 0-60 mph times in the high 3's are obtainable with a quick 1-2 shift. The S4 also has piggie downpipes and a Borla single 3 inch Exhaust system. Some bonus footage of a coworker who had never ridden in a semi-fast car before is also included. :-) *edit* Unfortunately the girl in this video has passed away of Cystic Fibrosis (4/20/2013). RIP. She was a wonderful girl and will be missed by many. Enjoy! Music: Jason Shaw @ audionautix.com (under Creative Commons License 3.0) Footage shot with Pentax K7 + DA*16-50mm, GoPro HD Hero, and iPhone4. девочка на ауди

Ferrari F430, Audi S4
Ferrari F430, Audi S4

Audi S4 B5 Biturbo Acceleration Street
Audi S4 B5 Biturbo Acceleration Street

SSP Tuned Stage 3 S4 Beast redline
this is an in-car camera of a run at etown. first i do a burnout in the lane, then i launch n finish my run. iirc, not the best launch. also, notice the difference between my 2nd gear and 3rd gear rev.

Audi S4 K04 Vs Sti
Tuned Sportec Audi S4(B5) with Ko4 turbo Vs Stock Sti (with Retarded driver)

623WHP Wicked GT AUDI S4
GT Audi S4 Perliminary Dyno tune. 623WHP/780CHP. 800whp coming soon...stay tuned.