Fuel pressure
 

The car isn't holding fuel pressure it's now sitting around 46 psi driving around in the hot fl heat. It doesn't have any fuel system upgrades besides the rrp. I scheduled to get a tune tomorrow but thinking about cancelling because of the fuel pressure drop. Any info would be appreciated

Rrp?

CJM road race pump!

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Yes

Would the tune be even worth it if it's not holding pressure

It depends on when the fuel pressure falls off. If it happens fairly quickly then no you need to find a fix first. If you can get some throttle into it then at that point boost can be cut. This is why the fuel return systems were developed. You want to keep boost in a range that you don't loose fuel pressure or it will go boom!

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Gotcha. Guess I'll keep an eye on it when it's on the dyno. I replaced the pump and went to an external jet to fix the old issue. Maybe the stock fuel fuel pump could be bad

Yeah I would check it out and make sure there are no issues with voltage or the top hat or could just be bad!

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That's the code, voltage issue

I wouldnt get the car tuned if the fuel pressure isnt correct... because the fuel pressure has a big effect on the tune during full throttle when the ECU goes outside of closed loop feedback.

That's what I figured. Going to wake up first thing in the morning and look at the sending unit. Got damn z day prep