IMO,the term "Sofa" is a bit misleading. I found a set of 350 recaros a while back and have had the occasion to use both at the track. To preface I am an "Occasional" track guy, my skill sets is about 6/10ths of cars capability. Up to about that point the tech seats work very well, the...
Remove the housing clamp bolts, then you can flex the air horn up and filter comes out easily. Also be sure to seat the "bump" on the bottom of filter on the bottom of the filter housing and TIGHTEN the clamp .
I change my air filter each time I change oil (4500 miles). That clamp needs to be TIGHT and seated all the way around the bell. I have noticed on occasion a flutter in idle and even the slightest leak will cause an errant maf read. Also recently had an intermittent air conditioning issue. Turns...
There will be a larger spoiler (About 4 inch), also look for a radiator in the pass side front grill for track pack, also recaro seats and small screen in center stack.