Welp, im at a loss and i need loads of help.. any input is appreciated!! to start here is info on the car..
2002 wrx 88k miles (approx. 45k on engine clutch and tranny(5MT))
stage 2 clutch
blitz turbo back exhaust
MRT up pipe
cusco front and rear sway bars w/ endlinks
cusco front and rear strut bars
cobb short shifter kit w/ bushings
blitz turbo timer
cobb 332mm front brake kit
think that about covers it for anything that could possibly have an effect on what im experiencing.. so heres my story.
Approx 1.5k miles ago started to notice a type of.. bumpiness coming from what i thought to be front passenger side. (this was confirmed by a friend of mine after riding with me and experiencing the problem). This only occured when turning, noticed mostly when the wheel was cranked all the way to one side or the other. I also tended to noticed it more after driving on the highway rather than when the car had been driven a very short distance. I didnt however notice it at speeds over approx 25. So i decided to check the basics.. wheel bearings, tie rods, cv axles. All looked good (and still do). Over the course of the next 1k miles i continued to notice it intermittently, but i wasnt driving often and couldnt figure it out so it was easy to put off. I should also note that when it does this there is no strange noise or anything, just the feeling of bumpiness from the passenger side. eventually took it to a couple mechanics, and they all said the same thing which was that they couldnt feel it. so i figured my subaru paranoia was acting up and disregarded it. I had to make a 300 mile trip a few days ago and i knew my fluids needed to be changed, so changed oil, oil filter, cleaned air filter, changed rear diff and trans fluid, replaced fuel filter. All fluids looked good when changed and were replaced with Royal Purple.
So i made my 300 mile trip without problems. After driving around town for a few days though things went WRONG. This evening started to notice the bumpiness alot, its extremely bad when turning now and is no longer inconsistent, its constant when turning and very noticable.
To top it off my idle is now acting up.. idle keeps dropping to approx 500 rpm, sputters a bit, then raises to 750, then just idles very inconsistently between the two. This just started happening about 10 miles ago. I should note that my plugs, wires, rotor and cap all have about 45k on them, so i figure its either a combo of those things or my IAC. Plugs, wires, rotor and cap will be replaced within the next few days. Fingers crossed its not my IAC, but if there are any other ideas as to what it could be PLEASE throw them out there.
The main one that is stumping me is the bumpiness coming from front passenger side when turning. Like i said, tie rods, wheel bearings, and cv axles are all good.. it makes no sound when it happens and it makes no difference whether the car is in gear or not, it is just as bad when turning in neutral. Any advice is greatly appreciated on either of these problems, thank you for the help sorry for the long read!