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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-

air pump question- keeping air to cats only

  • Thread starter Thread starter BLOWN 5.0 FOX
  • Start date Start date Apr 28, 2007

BLOWN 5.0 FOX

Member
Apr 4, 2005
213
0
16
NORTH SHORE MA
Apr 28, 2007
#1
  • Apr 28, 2007
  • #1
I upgraded my heads, and do not have smog tubes. I do want to use the air pump still to keep my cats healthy (bbk high flows). Id love to get an offroad pipe but unfortunetly I live in MA and both the cops and the emissions tests are strict.

I want to run the air pump without diverter valves straight to the pipe that leads to the cats. (running air at all times)

A- will this be practical for the cats (will it help/hurt)

B- Will I need to cap off the lines previously going to the diverters.

I hope this will be an easy "mod" and I can clean up my engine bay from emissions clutter while saving my cats in the process.

THANKS GUYS
 

fox-gt

Member
Feb 28, 2004
204
0
17
TN
Apr 29, 2007
#2
  • Apr 29, 2007
  • #2
BLOWN 5.0 FOX said:
I upgraded my heads, and do not have smog tubes. I do want to use the air pump still to keep my cats healthy (bbk high flows). Id love to get an offroad pipe but unfortunetly I live in MA and both the cops and the emissions tests are strict.

I want to run the air pump without diverter valves straight to the pipe that leads to the cats. (running air at all times)

A- will this be practical for the cats (will it help/hurt)

B- Will I need to cap off the lines previously going to the diverters.

I hope this will be an easy "mod" and I can clean up my engine bay from emissions clutter while saving my cats in the process.

THANKS GUYS
Click to expand...

My new heads didn't have smog tubes either. I ran a piece of heater hose from the smog pump air bypass valve to the air tube that goes to the h-pipe. I only had to plug one vacuum line, the line that went to the air diverter valve (the one in the middle)
 

BLOWN 5.0 FOX

Member
Apr 4, 2005
213
0
16
NORTH SHORE MA
Apr 29, 2007
#3
  • Apr 29, 2007
  • #3
so in other words- just the bypass valve thats on/off? I guess that would make sense. THANKS
 

fox-gt

Member
Feb 28, 2004
204
0
17
TN
Apr 29, 2007
#4
  • Apr 29, 2007
  • #4
I have seen people on here before ask which lines go where. So I created these. Hope they help someone.

Stock



mine
View attachment 387716
 
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