fuel pressure
There has been a lot of discussion about the fuel pressure made by the lift pump and its effect on starting, fuel economy and even bearing failure. So I decided to install a fuel pressure gauge that I can monitor while I drive.
Initial reports show that at idle I have ~0.75bar right in the middle of the manuals 0.6-0.8bar min. The interesting thing is that I stretched my spring out last summer ~ 17k miles ago. At that time the pressure at idle was closer to 0.9bar.
If I rev. the engine up to ~3000rpm I get 1 bar above the 0.8bar min.
Now here is the interesting thing. When I go for a spirited drive the fuel pressure drops to 0.75bar at higher rpm and full throttle. I wonder if the lift pump can keep up with demand on the highly modified engines.
I'll update as times goes on.
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