Engine running Lean

[03Civtec]

So im driving a 1.6 Vtec 03 Petrol, and took the air filter out and switched it with an induction kit. Installed it, and the warning light came on. took it to a garage who said it was running lean, so i switched it all back and had no problems.
Why would it run lean? And how much if any, damage would it cause to run lean?

Also the guy said i shouldnt have it because it "wouldn't do much" and it was more for bigger engine cars

 

[lowlife9]

yes he is rite it doesn't do much and its running lean probably because you did not reset the ECU.

 

[demarcuspz]

what he said ^

 

[Szady]

If the 7th Gen Civics are ANYTHING like the rest of the earlier model Civics, resetting the ECU wont do anything to help it from running lean. Simply putting an aftermarket air filter (or even intake for that matter) will not make a 1.6lt Honda run lean. Something else has to be going on.

 

[dj_cronic_metal]

Well you could buy a wideband, but that would be a waste of time. I'd get a compression tester and start there. Make sure your cylinder pressure is within spec. Usually from what i've seen if your running lean your compression is f**ked up, which could mean a host of things.

 

[toneekay]

What induction kit did you get? Did it have a section for the MAF sensor?

 

[lowlife9]

how would that not effect the fuel more airflow so the computer compensates dumping more fuel.