What's this thing?

[peganit]

The small black box bolted to the rear surge tank of the intake manifold, just to the right of the Ford emblem? It's not on mine.



.

I'm trying to get the secondaries working.

 

[SHOdded]

You mean the DPFE box at top right next to he EGR valve?

 

[peganit]

Yes.

This was an ATX 3.2 with EGR converted to an MTX and a non EGR manifold by my son. The DPFE connector is still there.

What's DPFE?

I do believe it has the ATX PCM, if that matters as to why the secondaries aren't opening.

 

[peganit]

(My daughter looked over my shoulder at that pic. Guess what color she wants for the snakes now?)

 

[SHOdded]

Differential Pressure Feedback Exhaust Sensor. Measures EGR valve pressure, prevents excess exhaust from being pumped into the intake.

 

[rubydist]

that will not impact your secondaries working or not working.

however, also back there should be a small vacuum canister with lines to the secondary actuators and a solenoid to close them at low rpms - is that stuff on yours? and working?

 

[peganit]

[QUOTE="rubydist, post: 1430072, member: 14604"however, also back there should be a small vacuum canister with lines to the secondary actuators and a solenoid to close them at low rpms - is that stuff on yours? and working?[/QUOTE]

I'll check ASAP.

Other than this apparent issue, the thing runs fantastic. Smooth idle, very tractable.