should i get the full throttle kit or to swap to intake 3.5?

[cetrero23]

hi guys, i need some advice, i am looking to add some more power to my US M3, and i got 2 choices
Or to get the euro full throttle kit, or the get 3.5 inches hfm with afe cai?
Do i need to remap the ecu in any case, or they are plug and play? thanks in advance for your help,

[James]

The european setup will not fit your engine. Go with the 3.5" HFM with AFE cold air intake instead. What did you have in mind for a chip?

[cetrero23]

as a chip i already have a dinan and afe 3inches, but like always power is never enough
do i need to putwith the new 3,5 bigger inyectors? remap de ecu?