As the title said I’m wondering if anyone has done or knows if it is possible. I’m over 200k on my 2015 engine and done 2 rounds of fuel injectors. Body is getting repaired and I wanna get a new engine to keep it going. I have replaced the original 6mt transmission with lower 70k 2015 mt trans. Any issues with ecu or other sensors? Thank you! If the 2020 would not be possible is there any other years that would be?

 

There was a similar thread a few weeks ago that concluded the camshafts, high pressure fuel pump, ECM and engine wiring harness changed 2018-ish. The ECM actively controls the high pressure pump to get the necessary fuel pressure and flow, so it throws an error code if paired with the wrong hardware. The old parts can apparently be transferred over to use the old ECM - I'm not sure if that includes the fuel injectors. A newer ECM may have compatibility troubles as far as talking to the rest of the car, though I don't know if anyone has posted about that.

 

If it's well taken care of the engine should still be viable at 200,000 miles.

How about rebuilding the current engine?

If you want to swap in an engine get the same year engine to avoid problems and issues with newer year Honda Fit engines.

 

The current engine burns about 1 quart of oil every 1k miles currently. That’s with 1/2 quart of lucas added to 0w-20 synthetic. I have walnut blasted the current engine about 20k miles ago but there is already significant oil residue in the intake valves again unfortunately

 

Most of the intake residues on DI engines come from PCV vapors (hot oil and piston blow-by) on the hot valves. Do the usual engine condition tests - compression, blow-by, and if possible, use a bore scope to check the cylinder bores for scoring. So long as the cylinders are okay, a general rebuild (valve job, honed cylinders, new rings, bearings and a gasket/seal kit) should get you a like-new engine.