Audi S4 vs Audi A4 2.0T

Racing at 5500 ft elevation

Rolling start from 1st gear up to 240 km/h. Long right-hand sweep with 2.0T running on far inner lane, hence the discrepancy between 3rd, 4th & 5th gears.

S4 - TNT X-Pipe Exhaust & BMC Cone CAI - 165 kW ATW @ altitude.
2.0T - Remap - 155-160 kW ATW

Both cars 2-up. Camera in 2.0T.

Category:

Autos & Vehicles

Tags:

• Audi
• B6
• S4
• V8
• Quattro
• Streetrace
• Drag
• 2.0T
• A4

[AudiS4V8]

Nope - 215 WHP or so..

1 hp = .745 kW

[AudiS4V8]

2.0T just had an FRC remap - 155-160 kW ATW.

[AudiS4V8]

Yeah - S4's a heavy bugger, and loses out on a lot of performance potential at altitude.. thanks for the comments!

[Yiruy]

Dang, what's up with the 2.0T keeping up like that. Nice work! What have you done to it? I have a 2008 Volkswagen GTI...

[lesuck]

No. The higher you go, the air density decreases.

Turbo motors pressurize the ambient air, allowing the engine to virtually take in the same amount as they would at sea level (depending on the electronics of the car adjusting turbo pressure based on ambient pressure). N/A cars do not get this benefit at high altitude, and since the air is less dense, they take in proportionately less of it. Less air means less fuel can be combusted, equals less power.

[ifartutaste]

s4's pretty pathetic stock light weight sedans r better

[XscXps3]

4cylinder keeps up with a v8 wow that amazing

[TheDannyward]

truth in racing

[crzygutrsnobrdr]

the s4 couldent breethe while the a4 had the turbo givin it all the air.

[drzfreshzboi]

@AudiS4V8  746

[username2153]

im guessing they cut off at 240 kph? (149 mph)

[stubobbyo]

@albokidnj no

[JonPurdue7]

@ImportDreams500

turbochargers, they call it turbonormalizing, it flat rates the power at altitude...best example is probably the cirrus sr22-GTS turbo, or columbia 400 turbo...

[edj66]

@caseyryeback1913 it didn't. If you read, the camera was in the 2.0T.

[SCHIZOPHRENlC]

orly?