I expect it would kick a VF turbo's ass in performance... spool a bit slower... get spanked by a full sized version.
A bit of extra lag just means you have to work a bit harder to get it up and going.
The stock intake is pretty restrictive too... and the tmic with a bigger turbo?
The Tomei bolt on was used with a fmic btw.
I have not used one... but a guy in Wellington was using a bolt on Tomei on his Type R and it made plenty of power... 280 kw at the wheels... he complained it was a bit laggy... not sure just how laggy it was and not sure on how big it was compared to a 3071 either.
Was just joking actually... but a noisy exhaust just attracts attention... which personally I don't want. When I first got my current car it was tuned to fart pop and backfire whenever I was off the gas... it was a nightmare and I had to drive around with my hand covering my eyes in shame.
Not joking... really worn out motors need back pressure to hold the exhaust valves in place. Surely you've seen people fishing exhaust valves out of the oil pan? Happens all the time.
Obnoxiousness is very subjective unfortunately... I know that very well indeed.
No.
I find this bit interesting: "I don't mind it being loud for others but I don't want it to be extremely loud in the cabin..."
My opinion... loud exhaust are awesome in theory... but in practise not worth pissing everyone off.
With 200,000 km on the engine the reduction in back pressure will likely allow the exhaust valves to move side to side excessively eventually (almost instantly) falling into the engine and blocking the oil feed pipe causing low oil pressure which would eventually (instantly) destroy the engine completely.
check the battery.
check all battery connections and alternator connections.
check all the fuses in the engine bay... in particular the 100 and 50 amp fuses. Check that the bolted in fuses are tightly bolted down.
check all the plugs on the underside of the main fuse box in the engine bay.
It's getting very hard to answer your questions of this nature seriously. (If you are not the guy that is always worried about everything breaking, then I apologise.)
No your engine is not going to be damaged from a couple of seconds of shuddering while slowly accelerating in bumper to bumper traffic.
Pod filters and AFMs are not a good match imo... I went through several AFMs because of the pod filter... granted that sometimes it was because I over oiled them... other times because the weather shield was removed and any big splashes of water that hit the poddy would f*** them.