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Shiv,
I see the same thing in your logs as mine. I see your off throttle AFR (deceleration cut) but look as your request for direct injector pulse width ramps up, the DI pressure dips before it rises back up. I'm working from my mobile right now so I can't get specific with your data log right now.
In real time this all happens super fast and I would never hear suttle DI rattle on my car with an exhaust. Your test car for the record looks normal from what I've been seeing. On the boosted cars they usually have upgraded supply fuel pumps and they just rip so fast past this part its less of an issue (if there is no DI pump issue).
I should also note to people my log of the dip is on and e85 setup making 440 whp while the "problem" car was totally stock on pump gas. When I get my hands back on this car I'll update here so we can see if the oem replacement part is better (apparently there have been multiple revisions of the DI pump).
Do you know what units you're logging pressure in?
In terms of the Hydra's DI control you have more than enough control to hang yourself. LOL! Like arghx7 was explaining about the oem method where I first had to set a target and adjust the required duty to hit that particular target, and then do it for every pressure target, then tweak the spill valve response time, then tweak the phase trim, and then fine then the PID the rest so it all works during transitions and different rpm points etc. It all tracks perfectly.
Do you have the DI pump controls for Open Tablet?
Thanks.
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