Hi Yall...

So i took my car to autoscope yesterday. I reinstalled what i did last thursday - ASC delete, 540 HFM and intake...to get the check engine lite on.

They scanned the code - O2 sensors are fine. However, the O2 sensors are getting bad readings and one is reading too rich and the other too lean.

So we plugged in the DINAN software - to read what software i have. Got the software code, called DINAN up...turns out i DONT have stage 4 software.
I actually have software meant for intake,exhaust and throttlebody.

So plugging in the 540hfm caused the issues.

So now my question...how long does it take for the ECU to adapt to changes?

Obviously, on the dyno on my last run, i installed the stock HFM and the car still ran rich but with better results. Is there a time period?

So apparently - the dinan stage 4 software goes with the real EURO hfm plus the install kit (includes a higher fuel regulator).

So i'm just gonna wait (for a while) and do Stage 5 all at one...with the m50 manifold...

thanks
franklin