Car Runs Rich/loads Up

Discussion in 'Fox 5.0 Mustang Tech' started by selfloader, Aug 30, 2012.

  1. need some help....my 89 gt had 2 bad injectors, decided to replace all 8 with 24lb. now the car runs rich and loads up at low rpm.........stock throttle body,egr,mass air,gt40,24lb injectors. Any advice would be great!!!!!!!!!!!!!!!!
     
  2. The MAF and computer are working together thinking you're running 19 lb injectors. You cannot simply upgrade injectors and not the maf and or get a tune. The MAF is the easiest to do. Get yourself a MAF calibrated for 24# injectors.
     
  3. can a stock cobra mass air work? or would it be easier to buy an aftermarket unit....
     
  4. I believe, and I could be wrong, the cobra PCM was flashed for the 24# injectors. If I am wrong, then yes the MAF will be sufficient.
     

  5. correct cobras came with 24lb injectors........gonna give it a try and see.....Thank you for the tech. support..........