did some datalogging

[kenneth]

Did some datalogging today on my car, one thing that don't look right is fuel pressure drop across injectors seem low to me.

For the most part of the datalog fuel pressure stays around 39-40 lbs. with a high of 53 lbs.
Now I'm running 60 lb. injectors.

Does that sound right?

fuel filter was changed around 15,000 miles ago.
Not getting no codes or detonation

Highest part of the run the fuel pumps are at 79-80% duty cycle.

 

[CataclysmGT]

It should stay at 39-40 all the time, even under boost. No need to increase the dP with 60# injectors.
Idling, your fuel pressure would be low due to engine vacuum with a pressure drop of ~39. Under WOT with 10psi, your fuel pressure would be 50#'s, with a deltaP of ~40

 

[frarmar]

+1. Mine stays 37-40 at WOT. I'd say you're good.

 

[bigray327]

For the most part of the datalog fuel pressure stays around 39-40 lbs. with a high of 53 lbs.
Now I'm running 60 lb. injectors.

Sounds like maybe you're confusing psi with lbs/hour. Fuel pressure is measured in pounds of force per square inch, and the rated fuel flow rate of your fuel injectors is measured in pounds of weight of gasoline per hour. Apples and oranges when it comes to reading your fuel pressure gauge.

 

[jroc07gt]

if you have 15k miles on the filter then you might as well go ahead and change it