After installing my new p28 ecu with Skunk2 program on my 94 GSR the air & fuel gauge is now reading on the rich side all the time.The little lites will not bounce back and foward like it used to at idle or crusin speed.Anybody here had this problem.

 

The skunk program is known to run rich I would suggest getting it tuned as soon as you can or else putting the old ecu back in, because even though we all know autometer air fuel gauges are not very accurate if it doesnt come off the rich side I would get it on the dyno.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtecpower2000 &raquo;</TD></TR><TR><TD CLASS="quote">After installing my new p28 ecu with Skunk2 program on my 94 GSR the air & fuel gauge is now reading on the rich side all the time.The little lites will not bounce back and foward like it used to at idle or crusin speed.Anybody here had this problem.</TD></TR></TABLE>

Sounds normal to me. Welcome to the world of chips. Without custom tunning, they are going to run rich as hell. Most of them disable the O2 as well, so you will loose the sweep. Keep in mind most of them are not setup for street use, but setup for extracting the most power from a track car.

 

At least your gauge stays in the rich. Mine stays in the lean

 

i got a p28 with jun program and know what you mean by running rich all the time. i adjusted my fpr down a notch and it's helped keep it stoich most of the time.

 

it is becuase of the chip not the gauge, well the gauge sucks anyways but, yeah its the chip tricking the computer to give it more fuel, if you test the continuity from the o2, it wont be what it is supposed to be, but then use someone's stock ecu and it works fine and the continuity is changed

 

Chips usually equal disabled closed loop which means the O2 doesn't do a whole lot anymore. Basically the car runs off the maps in the chip and usually runs pretty rich. The gauge probably won't move much until the car is fully warm.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AzSi22 &raquo;</TD></TR><TR><TD CLASS="quote">Chips usually equal disabled closed loop which means the O2 doesn't do a whole lot anymore. Basically the car runs off the maps in the chip and usually runs pretty rich. The gauge probably won't move much until the car is fully warm.</TD></TR></TABLE>

Exactly, this is what happened when I installed my hondata s100 until I got it fixed. The ecu is running in open loop and that's why it stays pegged at rich.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AzSi22 &raquo;</TD></TR><TR><TD CLASS="quote">Chips usually equal disabled closed loop which means the O2 doesn't do a whole lot anymore. Basically the car runs off the maps in the chip and usually runs pretty rich. The gauge probably won't move much until the car is fully warm.</TD></TR></TABLE>

Extactly

Chipped ECU are usually set in open loop. The good part is that you can use a fuel controller to dial in your fuel without the ECU dialing it back in close loop mode.

 

Only problem with open loop is that if its not tuned correctly, you will run rich on partial throttle which will bring your MPG down quite a bit. I had a throttle-in knock with the chipped ECU on pump gas, probably due to too much timing. But when I changed to hondata and had it tuned, it went away