So I've been in a tug of war between my e90 and the e46 (06 e90 power wise, 04 e46 looks although it's a 318i)Decided on the E46 since it was what I kept drooling over in high school and the first I purchased right after my first contract and the E90 fits better as a VIP ferry in the office (no more than 2 km per passenger haha)So~ I'm thinking of - Changing the entire air flow, intake to output.> Nothing drastic but wondering how much tuning is going to be required and where.- Some lowering and prolly 18s> Considering it's spotting a pretty weak engine and hoping the above gives gains of around 30-40. Will the bigger, heavier wheels affect the gains to the point of it being noticeable?- Custom wide body kits> Because this is ultimately what I've drooled after back in highschool when they were (2003)[As noted before I've not modded any beemers so far since I was told it's kinda tricky compared to any other tuners. Most of my experience modding was done on a second hand gtr34vs2 followed by the remainder on a kelisa. I apologize in advance for any questions that may seem pointless/stupid]