BigPack BMW F8X M3 M4, Intercooler + Pipes + Radiators

This is our different BigPack configurations for the BMW M3 / M4 F8X These are complete packages for the charge air cooling system with dropinfitment

The S55 turbo engine that powers the BMW M3 / M4 F8X uses a Top mounted watercooled intercooler instead of an ÒregularÓ aircooled intercooler The stock top mounted intercooler has a TubeampFin core with clamped plastic end tanks This construction has its drawbacks since it is prone to crack and start leaking coolant into engine or leaking boost pressure out of the tank sealings

The coolant in this system has its own separate cooling circuit combined of two parallel connected radiators and a pump The larger one of these two parallel connected radiators is positioned in the front of the center cooling pack the second smaller one is located in front of the rightside wheel arch

These cars are equipped with plastic intercooler pipes on both the hot and cold side These pipes are a week link on any tuned car or in some cases even on a stock tune The OE plastic pipes often crack / split leaving you with a boost leak

We have designed upgrades for all these parts by advanced 3D scanning and 3D modeling in the scanned environment We conducted CFD simulations on most parts and several tests to make sure we deliver the best performance upgrade

You can choose between three different options for this product

1 Intercooler and both intercooler pipe kits
2 Intercooler and both radiators for intercooler system
3 Intercooler both intercooler pipes and both radiators for intercooler system

Our performance intercooler helps your engine to make more power both by lowering the intake air temperature and lowering the pressure drop It is a bar and plate unit with 3D freeform designed end tanks TIG welded to the core It has a core volume 85 larger than stock intercooler and outperforms the stock unit both when it comes to air flow and cooling efficiency 16 better flow and 9C lower IAT so with both better flow and lower IAT this is a true upgrade

Our radiators for the charge air cooling circuit lowers the water temperature in the charge air cooling system circuit This is equal to lower intake air temperature which gives both more power and a more persistent performance We achieve this by increased cooling face area increased core thickness and well composed cores made with multichannel tubes

Our intercooler piping both the ones that goes from the turbochargers to the intercooler and the one that goes from intercooler to throttle body is designed to add durability and at the same time improve air flow It is not easy to improve both reliability and improve air flow as the stock pipes flows well With our software flow simulation and physical flow verification abilities we are sure that we are making improvements which is more than most suppliers of this kind of pipes can say

For more information about the included parts visit the product pages for each one of them

Intercooler
Turbo to intercooler pipes
Intercooler to throttle body pipe Jpipe
Front mounted Large intercooler system radiator
Side mounted Small intercooler system radiator

Significant advantages with do88 BigPack differs between the configurations

Peak powergain of 13 hp Measured on car with BootMod3 Stage 1 tune
Highest midrange powergain of 25 hp
Highest torque gain of 52 Nm
914C lower IAT depending on configuration
1617 higher air flow