Not mine, but "Unabomber approved":With these FAQs, I try to be product neutral and just give facts, or when facts are not available, quote "common logic". These FAQs are by no means all encompassing. They are meant to fill in 80% of the gaps, shorten your personal research time, and narrow your future search parameters. As information changes, I update these from time to time as well. I strive for accuracy, so if you see an error, please let me know. I do not "subscribe" to any of these FAQs, so if you have a correction, please make it in the thread and I will research and update when I have time. Subaru Mid Life AKA things toconsider when your Subaru hits 100,000+ miles. This post contains my opinion of the "best" commonly used power upgrades. This post contains my guide to buying items on eBay. This post contains a simplified version of how to do the H-6 rear brake upgrade on a WRX. This post contains every type of mud flaps available for the WRX/STi. This post contains questions no one on NASIOC can answer. This post contains my exhaust dB testing info. This post contains my interview with Kartboy. This post contains my interview with Turn in Concepts. This post contains my interview with Mach V. This post contains my interview with OAKOS Automotive. This post contains upgrades you can do to with a Cobb Accessport other than a TBE. This post contains my opinon as to first level modifications.What I have on my car for those with interest:2.5L Hybrid using JE FSR Pistons, Eagle rods, ported and polished heads, OEM everything elseJDM STi BPVGrimmspeed PulleyTurboXS downpipe no cat versionTurboXS adapter (makes downpipe normal OEM length)Borla Hush catbackKiller B equal length header + v-band uppipeCSS Performance FMICBlouch 3.5XT-R Ball Bearing TurboGrimmspeed TGV deletesGrimmspeed FMIC phenolic gasketsIAG billet cam sealsTurn In Concepts FU cam boltsWalbro fuel pumpAPS turbo inletID 1000 injectorsIAG fuel railsgotadomtune coolant bypassCobb AccessPORT ver 3TurboXS big MAF intakeGrimmspeed BCSMishimoto radiatorSTi short shifter (installed option) (later given away, so I only have the linkage)Whiteline Steering Rack BushingsGroup N engine mountsKartboy short throw shifterKartboy pitch stop mountKartboy shifter bushingsKartboy rear shifter bushingsKartboy rear differential bushingsKartboy transmission mount bushingsTurn in Concepts rear differential mount bushingsTurn in Concepts pivot bushingsTurn in Concepts rear lateral link and trailing arm bushingsPPG helical synchro 1-4 gearsGroup N transmission mountSouth Bend KSB03-SS-TZ Stage 3 Endurance clutchPPG torsen front differentialCusco 1.5 way rear differentialAndrewtech Automotive R160 aluminum differential coverOEM 2003 20 mm sedan rear sway barOEM 2004 STi rear sway bar bushingsFortune Auto 510 with optional Swift Spring upgrade 7 kgf/mm front, 6 kgf/mm rearKartboy front end linksKartboy rear end linksWhiteline subframe lockout boltsJDM GC8 aluminum control armsNolathane control arm bushingsWhiteline comfort ALKeBay front strut tower barSTI front belly cross brace2015 STI steering rack2013 STI subframe (for "easier" steering rack install)Solid STI steering knuckleWhiteline steering rack bushingsCusco steering rack braceIAG HP power steering lineFlat 4 Motorsport LP power steering lineSubaru OEM 4 pot frontsSubaru OEM 2 pot rearsDBA DBA5010BLKS two piece rotors frontKNS 4K rotors rearHawk pads F/RContinental DWS 235/45-17 + Mach V Awesome Wheels in gunmetalMotegi lug nutsGoodridge stainless steel brake linesGrimmspeed brake bracketInfinity Reference Series 6010cs tweeters in the front doors (Got rid of 6.5 Inch speakers)Pioneer TSD1602R 6.5 Inch Two-Way SpeakersIA Performance speaker spacersDavid Navalone line out convertorRockford Fosgate 8 gauge power amplifier kitKenwood KAC-606 amplifierOEM subwooferPioneer TS-G1045R 4" rear speakersOmori Boost GaugeRaammatPSI3 ECU Data Monitor2004 STi hoodscoop2004 STi splitter2004 STi shroudOEM 2004 Impreza TS mud flaps (modified to fit)OEM STi fog light coversCrawford AOSSTI oil panFumoto oil valveThrottle body bypass modPIAA silicone wiper bladesKartboy battery tie downDEI turbo blanketCustom Kartboy delrin oil capGrimmspeed hood struts1. Motor Oil: WalMart Supertech 5W-30 synthetic.2. Drain plug: Fumoto Oil Valve.3. Oil filter: WalMart Supertech or whatever is on sale.4. Transmission fluid: Redline lightweight shockproof with 1 quart of Mobil to thin it out.5. Differential fluid: non synthetic 75W90 generic Dollar Store stuff.5. Air Filter: SPT Intake. When I had the stocker, I just used OEM paper panel filter.6. Coolant: Subaru cooling system conditioner, Red Line Water Wetter, 1 gallon of distilled water, and 1 gallon of Peak Global Extended Life coolant.7. Brake Fluid: Valvoline generic stuff or whatever is on sale at the Discount Auto at the time.8. Spark Plugs: Denso iridium IK22 one step colder .030 gapOh and in case you are wondering.....it's just a dumb username, there is no meaning behind it.Ron from Virginia Beach