Oil consumption is about 500-600ml every 5000km with normal driving, with aggressive little more.
The idle is rough meaning that there is a little vibration and sometimes the revs drops and re-coming to the normal. I think that means compression loose in some cylinder.

Temperature is ok. The main problem is the rough idle.
Also some smell from exhaust when the car is on the pressure.
And if I revving the engine in limit there is a smoke too

Update:
The brown color of coolant is due to hydrocarbons in cooling system.
Wnen car working there are air bubbles that coming from radiator constantly and rough idle.
Either it is headgasket failure either the engine head or block has crack.
Will see when repaired

good!
When you use it give us a feedback about how it works
Post a photo please from the item that you are talking about

mr kawa wrote: are the aftermarket Valves (like OMI-high preformance) that are for d15-16 also going to fit (plug play)

Yes

only some exceptions are there if remember correctly d15 3stage vtec and civic gx (natural gas) have other valves

As I can understand your car is automatic and you want to swap vtec head and vtec ecu for manual transmission, in order to work vtec head on your automatic car? I think for automatic transmission you have to run automatic ecu. If the automatic ecu has vtec it is ok! If not then you can add vtec cont...

maybe can be helpful
viewtopic.php?f=3&t=898&hilit=Vtec+Controller
viewtopic.php?f=3&t=898&p=14194&hilit=v ... ler#p14194

icarus wrote: Do you have a more zoomed out pic maybe?

The pictures are not mine. They are from internet, from American Honda forums.
Maybe the Americans have other specifications than other countries and that's why you can not find the connector.

for RHD the obd2 connector must be near the gas pedal
under the hood latch cover



for LHD the obd2 connector is near the clutch pedal
also under the hood latch cover

BETEK wrote: obd2 connector must be near the gas pedal for RHD (AT DRIVER SIDE) at sidewall and well hidden at 96-98 models

BETEK wrote: for RHD cars the components are symmetrical the obd2 port