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APR's calibration engineering experts dedicated months to fine-tuning the Stage 3 Pmax engine and transmission software to provide an exceptional driving experience without imposing undue risk on your engine's lifespan
A new belt is required
With these flow and efficiency improvements also comes greater power
Each RS Wheel is meticulously crafted to be "Big Brake Kit Friendly"
eliminate this wasted area and allow air to be drawn in from all around and increase the total filter area to 292
Supercharger System - 2004-2006 BMW Z4 (2.5L) Audi S4 B6 4.2L quattro APR's calibration engineering experts dedicatedExperience a remarkable boost in throttle response and mid to top end power with the VF Engineering Supercharger System for the BMW Z4. By utilizing the centrifugal Vortech supercharger, this system significantly enhances performance while preserving the original BMW quality, smoothness, and reliability. All kits are calibrated at 6 psi, delivering power on par with, if not exceeding, that of similar products operating at higher boost levels. With
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