These are the official Instructions for fitting the PCC battery box kit. However, there are plenty of corners that you can cut so have a read through first before attempting. These are mostly based on the genuine BMW instructions so they’re a bit meaty, some people prefer to remove the air box by cutting it. If you have an EU4 with the canister then you may need to space the bracket under the tank lips for a bit of clearance. We recommend giving yourself a good day to complete the mod.