So i went to honda I9 this saturday. According to obd, The check light was due to Throttle position sensor. So i got the throttle body serviced, tappets adjustment, new air filter, spark plugs cleaned and all wiring to company original (earlier it was through emulator+advancer of cng)
The check light went away but there are some issues. by the way did IACV test afterwards which came with normal result...
I can only be sure whether the following behaviour is normal if i get to see/drive/opinion another civic which is on original wiring. Anyway the problem is that if the car is moving in neutral (no matter what speed) the rpm stays near 2k unless the car comes to complete stop. (this looks normal but there's more)
Now imagine i have reached the red signal so i brake and car comes to a stop (before this service, the rpm would stay at 1100 for like 2 seconds and then it would come to 800 idle) Now the rpm behaves according to this graph i made. All this transient state takes 5-7 seconds.
And the car still throws out unburnt petrol out of exhaust (some months ago the exhaust did not had that much smell and i was expecting it to be resolved once wiring is set to original + all tuning done but i feel it is not completely fixed)
I did not had to get the brakes checked so will do it next week. I discussed the shudder with mechanic and he said it can be due to suspension since my car hits hard on bumps. So now there is one more possible reason added to the list lol. Root cause can only be found once suspension + clutch will be opened up.
And one more problem popped up, the Power steering pump seems to be leaking fluid so he suggested to get the seals changed (original one cost 5k+) but there is no warranty lol. @chaudhary9 how did you fixed your pump ultimately?