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      11-04-2012, 01:54 PM   #8
ex deus machina

Drives: 335i E92, 05 Audi S4
Join Date: Oct 2012
Location: a Treacherous Canyon Road in SoCal

iTrader: (6)

Boost = pressurized air,
Its measured by a pressure sensor which translates it into an electrical signal for the ECU to understand.
Bolt-ons increase the overall efficiency of the motor, either by cooling the pressurized air, reducing restrictions on the intake side or exhaust side.
Originally Posted by E90Company View Post
-You don't increase boost through bolt on's, it's increased through a tune. The factory DME will actually increase boost on it's own at higher altitudes, in order to reach the factory load target.
Boost isn’t increased, the wastegates stay closed longer, to reach the same psi number, so you still get the same amount of boost but the engine has to work harder to get there.
Garage Queen: Audi S4 4.2L V8, Vortech Supercharger, Bilstein PSS9 Coilovers, Sway-bars, RS4 brakes and rear BBK, Fast Intentions - Full Exhaust, 505AWTQ 0-60: 3.8s
Daily Driver: E92 335i N54: JB4 G5 ISO29 w/BMS E85 Flash, quaife LSD, BMS Meth, AA 6 Sport IC, BMS Charge Pipe: 421hp/466tq 11.9@118mph(stock intake & exhaust)
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