Running Rich with EVO III

[blackhawk1402]

I just installed an EVO III 16g with the install kit and 550's and after i put this all in I went out and took it for a spin and the a/f gauge did not move from the "rich" setting at all when I was driving. Also, the car is idling around 1000-1100 rpms when it usually idles around 500-600 rpms. Lastly, when the car idles, the a/f gauge doesn't even cycle through the lean stoich and rich settings. It just stays all the way rich. I don't want to drive it because I am pretty much running off straight fuel. Any ideas to what this could be?

 

[1g_tsi_awd]

Well, with 550s and no tuning you are inherently going to run rich. I would get a logger if I were in your position.

 

[spyderturbo007]

Since you never filled out your profile, I'll assume what you listed were your only mods. EVO III 16g, 550cc injectors and a blinky AFR gauge.

As Anthony said, you are running 18% richer than stock because you installed larger injectors and aren't compensating for them.

 

[blackhawk1402]

I understand that I am going to be running richer with bigger injectors. But if you give the car full throttle at idle it won't go all the way up to 7500 rpms. It will only go to about 2500 and then bog down. However, if you slowly give it gas it will go above 2500 and after about 3500 rpms the turbo spools and it goes right up. A friend of mine tried giving it -50 at low throttle with the AFC and it still didn't help at all. I just need to get the a/f gauge to cycle. I know that I should have a wideband o2 to be doing this tuning but I need to be able to drive this car now.

 

[Geezus_Aach]

... I know that I should have a wideband o2 to be doing this tuning but I need to be able to drive this car now.

forget that A/F gauge, good if you want flashy lights
check your front o2 sensor?
no logger?
you still on stock fuel pump..

 

[MelloEclipse]

I'm not trying to be an ass, but you really need to read up more, or get a better idea of your goals? As stated, get a logger (palm pilot, plug, and software are only like 150 bucks or less) so you can at least see what's going on, and (as stated) don't trust your blinky lights.

 

[blackhawk1402]

forget that A/F gauge, good if you want flashy lights
check your front o2 sensor?
no logger?
you still on stock fuel pump..

If I was still on the stock fuel pump that wouldn't matter because I would be dumping even more fuel into the engine.

 

[1g_tsi_awd]

I would say put your old injectors in until you get a logger, fuel pump, preferably a wideband, and new fpr. It might be bogging because the fuel pump can't provide the injectors with the fuel they demand at WOT.

 

[1g_tsi_awd]

If I was still on the stock fuel pump that wouldn't matter because I would be dumping even more fuel into the engine.

Yea, but the injectors want more, that might be causing the bogging.