What are XIED'S?
 

I've seen this on several posts, what is it?

Go to nightrider.com it will explain it.

Fancy oxygen sensors that allow your EFI to cope with changes to air filter and pipes better than the stock ones....for my money I would go with a proper tuner like a FuelPak.

Thanks for the info!

I have them and they work very well.

They aren't sensors.

They are a pair of resistors that are added between the existing sensors and the ECU as a voltage divider to increase the bias voltage on the sensors. This makes it look as though the engine is running lean and the ECU compensates accordingly.

A cheap and cheerful stage-1 upgrade option.

Oh you can tell your an evo guy...Oxygen sensors? nope. All they are is a resistor that goes between your oxygen sensors and ecm to reduce the signal tricking the ECM into putting out more fuel.

dammit foxster beat me to it

Kinda not like STD's. lolol..

Question?
 

What are the potential pitfalls of using XIED's or VIED's?