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rough idle

  1. 2.5 Liter/Litre Factory Motor
    Hello everyone hoping I could get some help with my sti. So after having vehicle tuned and finally having a set up I'm good with I just started having issues with misfires at warm up idle and it wont idle normally it keeps haunting. Rpms range from 900ish to 1200ish and keeps bouncing only when...
  2. 2015+ STI Discussion
    Ive noticed that sometimes at a red light my 2019 sti would sometimes have the rpm "bounce" which I now understand is seen as normal on these cars. However I more recently noticed that my vacuum at idle fluctates rapidly by about a pound to a pound and half. This only happens sometimes and only...
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