The squadra chips are good, but remember you have to use a higher grade of fuel which is more expensive.
Opinions on induction kits differ. You may prefer a replacement panel filter (from K&N/BMC etc.) which means you don't have the problem of the filter sucking in hot air from under the bonnet at low speeds.
I prefer the replacement panel filter and have rerouted a cold air feed to the grill beside the LH foglight. I have used a K&N 57i kit too on the Alfa and you really need to be going at high speed (not high revs) for it to make a difference.
The noise is also VERY loud with the induction kit.