Hi my cell light has started coming on under hard acceleration in 4th gear I know its not the egt as have done the delete and was thinking it may be the lamda sensor has anyone else had this problem its a 03wrx, I won't be able to get a code reader till tomorrow night

 

Could be many possible reasons , but that's a good place to start as it's under heavy acc , espesh if u are de cat ?

 

I'd hazard a guess at Camshaft position sensor error........Early DENSO ECU on the WRX doesn't like that sort of behaviour, especially if you go near the rev limiter LOL

Shaun

 

Do you have the fault code for this sensor so I know what it is if it comes up

 

Also the light comes on about 4000rpm when the boost kicks in although its ok when boosting in 2nd and 3rd