I'm getting confused by all the possible air filter options.
My Brera is running everything pretty much standard at the moment, though as soon as my Fixitsan dongle arrives I'll fit the straight pipe I've got waiting and fully blank the EGR. What I thought was a possible oil leak near the turbo turned out to be weeping from the air intake, so that's been fully sealed with silicone tape. I've also got a Rutland Motors oil catch can waiting on a couple of fittings.
As I didn't know the recent history of the car when I bought it (full dealer history to roughly 80k then nothing till I bought it at 120k, though the air filter has a date stamp on it of 2014 so it must have had some work done) I spoke to Opie Oils who suggested running a cheaper/lower grade oil through it for a couple of tanks and then changing again once the EGR/DPF was sorted. I did that and also cleaned the throttle body and as much of the inlet manifold as possible, plus reconnected the swirl flaps using a repair kit as there was very little movement.
Once the EGR/DPF is done I'm looking to get a basic performance remap done, so I'm investigating the various air filter options. The problem is that there are so many my head is starting to swim. I don't want to do anything that can't be reversed leaving everything standard, but am quite happy removing bits and pieces that may not be optimal now.
I'm not looking for power gains from the filter, though a little bit extra is always welcome, but an improvement in the spool-up speed would be good. Some extra induction noise would be nice, but I don't want it to sound like a chav'd Corsa!
So, do I:
Remove the whole system (from the MAF) with an induction kit.
Leave the airbox in place (to provide waterproof airflow) and place an aftermarket filter just above the airbox.
Leave everything as it is, but replace the filter only with an upgraded one placed in the standard airbox.
Depending on the above, do I:
Route a cold air feed direct to the filter.
Route a more direct feed to the airbox.
Leave the standard air feed.
Also, what make filter do people recommend? The Pipercross filters give a good variety of options if I mount it outside the airbox (more length/offset variety), but most of the manufacturers have a straight drop in option if I go for the standard airbox option. I don't want to spend crazy money, but I'm not going to go cheap Chinese either (unless that's recommended by enough people, though I doubt that will be the case).
Finally, do I remove and blank the resonator box?
Thanks in advance