Running Rich as Hell Under Full Boost HELP!!

[BrianV8]

I have an aem eugo gauge. Actually had the o2 sensor die just before the problem started and replaced it. I thought it was out also so i compared it to buddies innovate wideband and they read exactly the same. Now that i leaned it back out to 11.5:1 it pulls like an SOB again. But like i said tuning the top again just put a bandaid on my problem.

[GTRADDICT]

So basically... Your ECU de-duned it self? Could you reload the tuning map?

[BrianV8]

So basically... Your ECU de-duned it self? Could you reload the tuning map?

well in a nutshell. I would not say detune more like rescaled the fuel somehow. Ya i did reburn the chip with no better results which tells me its not the tune. Something else has to be going on for it to be dumping more fuel. A resistance has changed somewhere making it not give an accurate output.

[BrianV8]

Alright i have to bring this thread back from the dead. Been doing so much homework my heads been hurting for months with no end in sight.

I came across a tonne of uses for this thing but no one gives a "for sure" definition of what it is or does.
I've heard rb20 injector factory injector resistor and
Fuel pump drop resistor

as the two main definitions but both are very different. Here is a pic below

http://www.jdmtrader.com.au/photos/10_1309432257.jpg

Still battling this running rich thing and wondering what are the chances it something like that. I've replaced it with no luck but don't even understand why its there or what it really does