air injection pump ?'s
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Joined: Dec 2009
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air injection pump ?'s
Alright, well to free up some space in the engine bay, i was considering removing the secondary air injection pump. Now, i've researched it a bit, and it seems perfectly fine to remove it. I think a company called TVT design(?) even made block off plates so the SRT6 guys could ditch it. TVT isn't around anymore so i can't link you to any information on them.
My question is, would it harm the cats by not having this? I know it only works for 30 sec or so on start up, but its just an issue i haven't heard anybody say anything about. Maybe somebody has some insight?
I also never hear anybody talk about just removing it. When people burn them up or they go out, they'll spend the $$$$$ to fix it. If it didn't matter, i would figure people would just not fix them.
BTW i have no emissions testing.
My question is, would it harm the cats by not having this? I know it only works for 30 sec or so on start up, but its just an issue i haven't heard anybody say anything about. Maybe somebody has some insight?
I also never hear anybody talk about just removing it. When people burn them up or they go out, they'll spend the $$$$$ to fix it. If it didn't matter, i would figure people would just not fix them.
BTW i have no emissions testing.
Senior Member
Joined: Feb 2010
Posts: 295
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From: Seattle, WA
2005 C55 AMG
Correct, if you can remove without CEL, then go for it. I'm wondering the same thing as I've gone through 2 of them so far (at about $700.00 ea) and the CEL just came on again last week w/ the same code 
Senior Member
Joined: Aug 2005
Posts: 316
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From: Folsom Prison PA
04 Crossfire MB 5.0L M113 V8 6spd, 05 Bagged SRT6w/55K AMG V8 ,2016 C300 Sport
most of the time its the relay that goes bad not the pump. they always replace the pump. if you could figure out what size resistor to stick on the end of the harness, you shouldnt get a CEL. otherwise if you pull it, I dont think it will harm the CATS. just get a
small code reader and turn the light off
small code reader and turn the light off
Super Member
Joined: Oct 2008
Posts: 861
Likes: 3
From: Fairfield county, CT.
2004 Ran SRT-10,2007 S550,2016 E400c
most of the time its the relay that goes bad not the pump. they always replace the pump. if you could figure out what size resistor to stick on the end of the harness, you shouldnt get a CEL. otherwise if you pull it, I dont think it will harm the CATS. just get a
small code reader and turn the light off
small code reader and turn the light off
Where are you planing on running a resistor?? The engine management dosent even monitor the air pump but what it does monitor is the rear 02s or the downstream o2s... at start up it injects air to warm the cats up faster so the readings of the rear 02s must drop below 40mV or a cel will show..
what can be damaged?? for first the rear o2 sensors ( if running both cats still) will be damaged... also in some instances the rear cats get loaded up with fuel and can cause problems.. are there ways to get around all this yes not simple thought
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Junior Member
Joined: Feb 2010
Posts: 34
Likes: 1
From: Brecon beacons wales uk
range rover looking for a new w206
I have dont it , several months ago and there is no problems , i do have the engine light on about once in a month , do a reset with a scanner and every thing is ok .. it has made room for a seperate water tank for the intercooler . I still have the valves on the heads , that will be the next prodject to make some blanking plates ..
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