1968-Present E-Series Van/Cutaway/Chassis Econolines. E150, E250, E350, E450 and E550

Best exhaust manifolds

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  #16  
Old 11-27-2019 | 07:00 PM
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olddawg64
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Originally Posted by Steve460
Those have the air tube fittings for the air pump. The California emissions headers only have the connector for the EGR tube.
OK, forgive my ignorance...
The '93 -'97 headers have the tubes for the air pump...do they also have the EGR connection? Mine isn't a California emissions vehicle but of course it has an EGR valve.
 
  #17  
Old 11-27-2019 | 07:01 PM
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Originally Posted by Maillemaker
My 1990 has a catalytic convert, and one O2 sensor upstream of it.

I bet newer models have an O2 sensor upstream and downstream, and if you pull the cat you'll have to do something to trick the downstream O2.

Steve
Yeah, I need to check.
 
  #18  
Old 11-27-2019 | 08:13 PM
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Steve460
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All 460’s with speed density fuel injection have 1 o2 sensor upstream of the cat. 96-97 California 460’s are mass air flow , they have a left o2 sensor and a right o2 sensor up stream. Im not sure if they have a 3rd o2 sensor downstream.
Speed Density fuel injection is not affected by removing the cat other than a performance increase and less exhaust heat.
The 96-97 Banks California headers Y pipe has a Left & Right o2 bungs, these will need to be plugged and another bung welded on the Y pipe after the 2 pipes come together .
 
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