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Discussion Starter · #1 ·

i have a 2016 mustang ecoboost with K&N intake, blowoff valve, catless , Roush mufflers and custom tune.
I found these codes and feel the car not accelerating and power loss.
It has a new low pressure fuel pump, low pressure fuel sensor , purge valve, O2 sensor, HFP.

P0301(00) Pending
P0316(00) Pending
P04DB Permanent

My notices:

coolant level stable
on cold start somedays i hear spiting from the exhaust
a month ago I noticed the same codes and the coil on cylinder has a short and smell like burned, after changing it it went well.
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