dsmlink tune lean at around 4500

[steve3s]

I bought my 1999 gst from my buddy about 2 months ago and he had a map from before he sent me to tune it. The thing is, he had this tune on the car before and it ran fine. Now it's running super lean at 4500 rpm. It even does it on the 2 step. I have V2 link, walbro 255 wired to the battery, 780 injectors and fpr. My thought was maybe the fuel filter is bad, I would like some input by someone who knows these cars better than me. I also added fuel at 4500 up to 7500 and it still is doing it.

 

[gofer]

Your car will always go lean on the WB when you're on the 2-step, ALWAYS. So if you're basing this 4.5k lean condition on what you see on the WB only using the 2-step then its not accurate. If it does in fact go lean at 4.5k at WOT in 3rd gear and you added fuel and its still lean you need to calibrate your MAFComp sliders.

JeffGST:MAFComp

 

[bradselph]

More info would be good, like how lean and how much boost?

A log file will help alot also.

 

[steve3s]

I'm running 18 psi, the wideband is a PLX and it says "LEAN" when I go wot. I did not know that it always says lean on the 2 step, thanks for that info