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  1. High Altitude Tuning
    I just bought a 2015 STI and have started modding. I have cobb intake and bpv with access port. Im looking into the tomei exhaust. I know the access port helps but I want to dyno tune just to dial it in more. Looking for shops in or around St. Louis what kind of experiences did you have with...
  2. Engine Modifications
    Im new here so bear with me...So I just installed the Grimmspeed stealth box intake on my 2020 wrx. I thought the E-tune would come within a couple of days but they're backed up. Is it ok to drive without a tune if I stay out of boost? I don't really want to reinstall stock intake if I don't...
  3. Engine Modifications
    Hey guys, First off, I'm new to the forum and while I appreciate everything Subie, I'm personally a nissan/VQ enthusiast. A friend likes what I've done to my car, and he's not quite as used to doing performance mods. He's recently jumped on the bandwagon and asked me to help figure out what to...
  4. Engine Modifications
    Hey guys, Car: 2015 WRX 6speed MT Parts: invidia r400 gemini, invidia catted j-pipe, mishimoto air intake, and 2nd restrictor pill delete COBB AP- Stage 2 tune from COBB Miles: 82,000 I notice a big hesitation when i hit about 5k-6k rpm, its almost like turbo gives up and acceleration loses...
  5. Engine Modifications
    Do I need a Cobb AP before buying a Boomba BPV and a Perrin Turbo Inlet? Or any tune before or afterwards? Still have stock exhaust. -15’ wrx limited
  6. Engine Performance
    hello all sorry if this is in the wrong spot but my question is i want to get the cobb intake, airbox, catted downpipe, and the accessport for my 2011 WRX. the stage 2 map states you need a full turbo back exhaust. if i install the parts above and try to run the stage 2 (with intake) map will...
  7. Tuning: Electronic Engine Management
    Hey guys, i recently purchased a 2011 sti and it started acting up. So upon taking it to a Subaru dealer for a diagnostic check i found out the the car was on a different tune . How do i go about putting back on the OEM tune???
  8. STi Engine Performance
    04 sti with Forgred pistons (JE) and Rods ACL Race bearings TGV delete ARP Head Studs Upgraded to 11mm oil pump 850cc Injectors Walbro Fuel pump 3in Inlet- Perrin short ram intake Perrin FMIC TBE Exhaust Turbosmart EBC ATP gt3076 Externaly gated stock location External waste(Turbosmart)...
  9. Engine Modifications
    I was getting ready to purchase the COBB accessport from COBB when I ran across a thread on the forums that took me to this page. Cobb 08-11 WRX / 08-11 STi / 07-10 LGT / 09-10 Impreza 2.5 [cobbAP-SUB-003] - $547.40 : Kronos Performance, Leading since 6th Century BC They have it on...
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