Question about EGR Eliminator - Please advise before I plug-in the eliminator

[MaRu_GT]

So I am planning to plug RJM EGR Eliminator into my 1990 5.0 Mustang. RJM Injection Tech — EGR Eliminator
I do have the EGR unit still installed but sensor is disconnected from the harness connector.

Does anyone know if I MUST remove the EGR unit and block it off in order to use this eliminator ? or I can simply plug this elminator without removing the EGR unit from throttle body ?

Also, is there any mismatching issue in the 1990 EGR sensor connector that might cause real problems if I am not aware of ? I guess that there are at least 3 pins in the eliminator and in the harness connector... any advice will be appreciated.

 

[Mustang5L5]

Technically, you don't need the eliminator. With the EGR unplugged, the computer sees this and has disabled it.

To properly block the EGR off, you need to remove the lower inake and block the EGR ports at the heads otherwise the Exhaust gas will still be present in the intake and at the EGR valve. Therefore you must retain the valve of the gases will flow out.

basically, with the EGR unhooked, that's all you need to do.

Any particular reason why you are disabling it? It costs 0HP and actually helps part throttle fuel ecomony.

 

[MaRu_GT]

Technically, you don't need the eliminator. With the EGR unplugged, the computer sees this and has disabled it.

To properly block the EGR off, you need to remove the lower inake and block the EGR ports at the heads otherwise the Exhaust gas will still be present in the intake and at the EGR valve. Therefore you must retain the valve of the gases will flow out.

basically, with the EGR unhooked, that's all you need to do.

Any particular reason why you are disabling it? It costs 0HP and actually helps part throttle fuel ecomony.

I disconnected my EGR due to clearance when I installed the fuel pressure gauge. The connector from the main harness will not plug into the connector on the EGR sensor, as the FP gauge takes the space where this connector exists. I am not planning to install any fuel pressure gauge inside the car.

I have just heard that the computer will be confused that there is no EGR volts.

I have plugged the EGR ports as you mentioned.. I was only concerned if the computer get confused and the engine doesnt run that smooth with the sensor unplugged.

 

[VibrantRedGT]

I bought the EGR eliminator plate at UPR for $9. Its shaped aluminum with two holes. It actually looks nice and even better without the stock EGR and plumbing installed in the engine bay. We are using the twEECer so it can be disabled manually through that and a laptop.

 

[90stang5speed]

I did the eliminator before I got my TWEECER RT. from my understanding, the eliminator gives the computer the signal that the EGR valve is always closed and the computer adjust for that. it will give a code 33 I think. I used a block off plate too as it looks nicer but I agree there is no performance gain & it drops a minimal amount of weight. good luck.

 

[Mustang5L5]

I have just heard that the computer will be confused that there is no EGR volts.

I have plugged the EGR ports as you mentioned.. I was only concerned if the computer get confused and the engine doesnt run that smooth with the sensor unplugged.

No. the computer will see no response from the EGR and disable the function in the EEC.

So you can do it either way. Leave it unplugged, or use the resistor plug.

As for blocking off the flow, if you don't want to pull the intake, there are block off plates like mentioned that you can bolt in place to remove the actual physical valve.

But next time you have the intake off (either the upper, or the lower), you might want to block the ports there to keep hot exhaust gases out of the intake if they aren't being used

 

[MaRu_GT]

Thanks guys ... I got that EGR plug with me... looks like I will use it and I might get the plate later to block the valve off.

 

[Vinnietbird]

I've got the plug and the plate on the Sport.