The first time purge valve was connected wrong and didn't plug in the evap hose. After we installed everything I drove the car for about 10 miles and the CEL(p0456 evap leak:headbonk:) came on, I connected the evap to the IM and of course the hose doesn't go there so the car was still running...
No I haven't yet to figure it out. I'm getting to the point where I just want to return back to the stock intake! Car is now misfiring and has a P300 code. Not sure if the injectors is causing those problems since i got the 47lb.
Hello, my name is Marcel. I just did the Boss intake manifold on my premium 2015 mustang GT and got the check engine light on. The code is P0456( evaporative emission system leak). Have any of you guys done the boss IM swap that can help me out!! Thanks in advance :thumbsup: