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  1. 2.5 Liter/Litre Factory Motor
    Hey guys, Got a fresh motor last July and have had a conditional cylinder 4 misfire ever since getting the car back. When I got it back, first thing I noticed was the ground to the bellhousing wasn’t bolted down, fixed that and thought all was well then started noticing this miss… The odd thing...
  2. 2.5 Liter/Litre Factory Motor
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  3. General Subaru Discussion
    I cannot for the life of me figure out what is wrong... i changed the sparks/coil packs, checked TPS and IACV sensors and they are fine, no power loss from the engine EXCEPT in 6th gear.. MAF, AFR, DAM, Fuel Pump, all read fine... no knock, normal oil consumption.... P0303 is brand new as of 5...
  4. GR-General
    G'day guys! I've just recently bought an 08 STI Spec-R from a used car dealer (fortunately under warranty still), and I've just had to get the car towed back there to be repaired, although I am skeptical as their repairer is by no means a Subaru specialist or a performance specialist...
  5. 2.5 Liter/Litre Factory Motor
    I've been having a misfire issue lately and I cannot for the life of me figure it out and its driving me insane. It was driving fine for a while until I started having random misfires. I had changed anything on it recently either. I have changed/swapped fuel injectors, changed/ swapped spark...
  6. 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...
  7. Built Motor Discussion
    2016 sti New Iag magnum closed deck short block w/14mm arp headstuds Oem heads decked/ported/polished gsc s2 cams 272/272, beehive springs and titanium retainers, stock/oem valves not changed but valve lash (head work done at a mashine shop) Iag Rails Iag tgv deletes Iag Comp aos Iag phenolic...
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