The next upgrades were a K&N 57i Induction Kit and a Forge RS recirc valve. It's a 50/50 chance whether the car goes into limp mode because of the air filter. Luckily mine has been fine, but it is advised to get the MAF recalibrated with a remap.
I cable tied and taped the air feed hose to the original cold air feed. Ideally this needs addressing later on
