It's twin scroll which allows for two cylinders per exhaust runner to apply exhaust gas stream to two separate areas of the turbine vanes. It enhances low end response. The new 1.6T has CVVD. CVVT is handy though old hat, but THAT is trick.
The Theta II also incorporates shimless, or might that be shim free, buckets, solid lifters on slimfast, for happy revving. Service is supposed to occur at 60K miles. Just a set cost two and half bills, tax not included, online OEM. You're getting the one-two combo platter of high pressure mechanical fuel pump, via rotating cam, combined with valve clatter with a side of low ZDDP thin auto oil. The valve noise is too much lash. Which is debatable if you now have smaller intake passageways due to lack of conventional petrol wash due to DI. Forgetaboutit.
The oft maligned Theta II combined with turbocharger is Mighty Mouse. I know a guy that that likes OC full synthetic, a blend no less perish the thought, of 3300 miles. He has an oil guy, no his name isn't Bob, that comes over to his house performing the service.
They say the engine has over 100K miles, sees mid 20's PSI regularly peaking close to 30. That's around 60Hg. He also claims to blend his petrol; no sense in stopping the party at OC. He claims 306 HP at the crank because the new Civic R boasts 305. I heard he suckered a kid in a little Veloster N, 275 HP, electric solenoid intake CVVT[ hydraulic CVVT exhaust], electronic LSD and manual 6 speed; not to mention less weight, to an impromptu match.
This old dude, being devious employing treachery at will, romped on the gas whilst the lad was two car lengths shy. Whadd-ya talkin-about, let da yute pull him from a dead stop or slow roll. He merely did not properly time JJ 'da boss' arm drop. A lesson was learned as junior received a double helping of petrol rich oil blowby worthy of diesel standards through four gears before the old dude got off the throttle. This allowed the youngster to 'pass him' eventually saving some if little face in his yet fully developed mind.
Sounds as a pea thrasher, blows soot like a semi and scalded apes wish they ran this fast.
You say to-ma-toe I say ta-matah. You say junk, I say line 'em up...
