air leak on evo?

[Paree4g63]

Car's running very weak..
Lean code: 0171
Just did a clutch&fly install..
Backfires and if i try and cruise at 5th gear, it's even weaker and the motor shakes more often.
Possible mass air leak?
Oem spark plugs are currently in..
Motor shakes, most of the vibrating noise is on the right side, I hear alittle ringing on the right side.

Checked all hoses and wiring; seemed ok!

What could be wrong?

Any ideas, let me know guys.. Thanks:(

[talentfinder]

I've only worked on a couple Evo's but what mods have you done on the car?

[MK3Virus]

new motor or sell it =)

[Paree4g63]

new motor or sell it =)

Naw, nothings wrong as of today. Only thing that caused what I had posted up above was a misplaced order of my spark plug wires and coil packs.. Now I know! thanks though!