There is good news though for Eventuri owners. Evolve are working on an upgrade addon that gives the big CSL airbox sound and look and works in conjunction with the Eventuri. It will still be plug and play too
See this post here: http://forums.m3cutters.co.uk/showpost.php?p=1698471&postcount=22
The CSL airbox alone is £1500+ though!
Unless you were one of the lucky few who grabbed one when the prices were genuinely low a long while back and worth grabbing. They rocketed up sadly.
I'll ask Evolve about the addon upgrade when I visit them next month for the remap.
I do think however the Eventuri maybe has better low/mid range drivability, but the CSL air box equipped cars pull much better past 6000rpm no doubt due to air volume into the air box and the fact the CSL's have the cold air ram vent.
Yup that's also what I' keep on seeing mentioned about the Eventuri, better low/mid range performance, and with that the induction noise from 2-5k. The CSL and CSL style boxes peak better at top end rpms. Evolve also said something along those lines in another thread.
I wanted the nicer induction sound mostly, for that I think 600 quid was worth it, no faff required. Any other gains are a bonus! I'll get the remap done, but not immediately as I want to see how the car feels and sounds with just the Eventuri. The remap includes before/after dyno runs so will be able to see what just the Eventuri gained over stock (which is 338HP from the Powerstation run back in early last year) and then with the remap.
I asked the guys at the dealership about the warranty issue with the part and they basically said if the non oem part has not caused the issue you are fine as a rule of thumb so happy with that.