backfire in boost?

[89supra884]

Well I swapped my ge to a gte and all I have done now is a lexus maf. When I hit 8-9 pounds for a few seconds it will make a loud pop, the check engine light will come on for about 3 seconds then it will shut off? I ran the codes and it is 51 and 34. I'm not sure if any of those has to do with the backfire?

 

[Poodles]

51 could be from touching the gas while checking codes or having hte A/C switch on. The 34 is abnormal turbocharger pressure, meaning it's fuel cut more than likely. If it's happen at that low of a level, you have a huge boost leak. Also, the lexus AFM is not to be used alone, you'll go dangerously lean...

 

[89supra884]

Well I knoe for sure that its not the ac swithc because I do not have ac at all lol. And with the lexus maf, the housing id bigger correct, so I could just un screw the sensor and put it into my stock one, correct?

 

[Poodles]

Yes.

 

[89supra884]

Cool, thankyou for the help, and I'm kinda new, but where would the boost leak be coming from the vacuum lines?