So, TL;DR a healthy car should have this "dip" in fuel pressure as shown here, when going WOT. The dip should then rise, and level off. Healthy car:
Quote:
Originally Posted by shiv@vishnu
...Here is a WOT run from ~1800rpm:
 |
Otherwise, if your car is running unhealthy (which apparently would be a fuel pump issue), it will instead have a "wave" up & down of the fuel pressure.
Quote:
Originally Posted by Element Tuning
|
Also, from what I understand, if D/I fuel pressure doesn't rise directly with VVT/Cam increase (like it does in pic #1), the tune should be modified.
Is that correct?