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Apologies for the late reply gents, just now saw all of the reply’s. Thank you to everyone for taking your time.
Quick update on the situation:
Rough starts turned into squeaking in left side of engine bay after self troubleshooting with cleaning the MAF and getting the battery tested (simple test at Autozone to test it under load turned out battery is good and holds charge).
Squeaking turned into rough idles in stop and go traffic and even up to a stutter. Found a bad vacuum leak on the oil catch can, and once fix now has a CEL as of today. Code runs up as P0087 for fuel pressure issue, and after doing some research concluded that, my DW300C is likely going bad and has caused weak fuel pressure to the the high pressure fuel pump which is causing that squeaking that I’m hearing on the driver side engine and on top of the vacuum leak has caused it to stutter in stop and go and also give it some really struggling starts (in warm conditions / perfectly fine in cold starts).
Conclusion so far is to remove / replace fuel pump, and have gotten in contact with my tuner to see if any other discrepancy needs to be attended to. So if anyone else has gotten a similar issue, I hope this mini trouble shooting tree helps.
Further more, some key things I’ve been seeing that has lead up to this that I could of caught before is that my tank goes empty at 1/4 on the huge before the light even comes on. Have starved the engine twice because of that, and came to the conclusion that fuel pump was most likely improperly installed by me in regards to the O-rings. If anyone else has a similar issue or if it’s normal to be going empty at 1/4 of a tank on the DW300C please let me know. Hope this helps some trouble shooters, and I’ll update as I go.
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