do88 BMW 135I / 335I N55 (E8X/E9X) BigPack

This comprehensive package includes both do88's performance intercooler and charge pipe kit together, delivering unmatched performance and reliability for high-horsepower goals. If you demand the absolute best for your N55, this kit is tailored for exactly that, replacing everything from the intercooler inlet all the way to the throttle body, and it's this complete-system approach that drives the drastic improvement in both airflow and cooling performance.

The performance intercooler is an all-aluminium construction, with CAD-designed, flow-optimised cast end tanks alongside an optimised core design, achieving the best possible cooling efficiency combined with the lowest possible pressure drop, a 124% larger core volume and 75% larger frontal cooling area than stock. The charge pipes are manufactured from 3in mandrel-bent seamless aluminium with a CNC-machined throttle body flange, paired with custom high-quality silicone hoses reinforced with 4 layers of polyester/aramid fabric, capable of handling very high temperature and pressure. Together, independent testing on a 335xi N55 with a Stage 1 tune showed a documented 13hp peak power gain, alongside a 15°C lower post-intercooler air temperature.

Please note: the OEM intercooler and pipes were designed for the power level the car was originally built for. Any power increase or intense use of the vehicle, even in stock form, may exceed the performance capabilities of the OE parts. Already after an engine software tune, this BigPack will truly unlock the performance potential you're looking for.

Why Choose This BigPack

• Complete replacement from intercooler inlet to throttle body, not individually mixed components
• 124% larger intercooler core volume, 75% larger frontal cooling area than stock
• Documented 13hp peak gain and 15°C lower post-intercooler air temperature (Stage 1 tuned 335xi N55)
• CAD-designed, flow-optimised cast end tanks on the intercooler
• Aramid-reinforced silicone hoses built to handle very high temperature and pressure
• Genuinely coordinated fitment across every connection point in the system

Compatibility

• BMW E82/E88 135i/135is/1M (2007-2013, N55)
• BMW E90/E91/E92/E93 335i/335xi/335is (2007-2013, N55)
• BMW E84 X1 35i (2012-2015, N55)