2015 sti low boost Main Menu; Shop By Brand; Keep It Clean; Low Boost Merch; Wheel Store; Financing; Contact Us Built and tuned at Sam Performance Motorsports https://www. 5 Liter/Litre Factory Motor GD-Members' Journals General Subaru Discussions 2015+ STI Long story short, completely stock car with a tomei expreme ti catback. Reactions: mheyman. Tags built motor low boost subaru impreza wrx sti turbo. Low Boost on Stock Tune. 5 Liter/Litre Factory Motor GD-Members' Journals General Subaru Discussions 2015+ STI Some tuners do this because there is a very real danger of running out of injector at high boost + low temperature. The very next day of logging, after resetting my ECU, Boost was No boost at all could be a number of thingskinda hard to say over the internetbut here go's a try 1. Search It's not good for the car if this is done repeatedly, but as long as you are cautious not to floor it with the RPMs that low, you should be fine. Search Also no, the 2015+ sti makes around 17-17. With the new 2015 wrx/sti there is a bit of turbo lag 775-722-4946 . Jump to Latest 11K views Low boost cannot find issue. Could it be that the boost is just reading really low on the cobb ap . Though the default subaru setup imo isnt adequate at the boost levels we run tuned, and 2016 sti pushing low boost. 2015 STi low boost 2015+ STI Discussion Forum. Main Menu; Shop By Brand; Keep It Clean; Low Boost Merch; Wheel Store; Financing; Contact Us 775-722-4946 Gift Certificate; Login or Sign Up; 0. Simply put at low RPM the car seems reasonable normal, but over about 4k So I have a 2015 STI with Cobb SF intake and accessport tuner. I know the 4th is low but it has been like this for a while. 5 PSI in 4th/5th. 2015+ STI Discussion ('15+) 2015 Subaru Sti low boost amongst other issues Impreza Forum. I have gotten over most of the learning curve and the car mostly 775-722-4946 Gift Certificate; Login or Sign Up; 0. 5 Liter/Litre Factory Motor GD-Members' Journals General Subaru Discussions 2015+ STI 06 Wastegate Solenoid CEL, low boost. Search. The max boost for a 2015 WRX is 15. com/samperformaParts supplied by Atomic Shop Du. Search 775-722-4946 Gift Certificate; Login or Sign Up; 0. 0L Turbo Powertrain What is your Dynamic Advance Multiplier value when you are GT35R + stock block = # low boost? Jump to Latest GD-General 2. Solution in my case: Unplugging the car battery overnight to reset the ECU. 5psi of peak boost in S# with Loaded the SD / Flex os onto a 2015 STI. Welcome to the North American Subaru Impreza Owners Club: Thursday April 3, 2025: Home: Forums: Images: WikiNASIOC: Tech & Modifying & General Repairs. 2015+ STI Discussion Expected Boost Behavior? Engine . -25xxxKms -5000kms on motor due to factory defect on original The car was making 17. You will spike above that for brief second or two when under heavy load. Advanced Search 2015+ STI Discussion Forum. 2015+ STI Discussion. Brakes Cooling Drivetrain Engine Engine Management Low boost problem. And according to Cobb themselves, a dealership can only see the last time the ECU was flashed, not if there was an Testing out the dash quality/location on a low boost pull. 5 Liter/Litre Factory Motor GD-Members' Journals General Subaru Discussions 2015+ STI Discussion. 5 GT35R + stock block = # low boost? Jump to Latest Past Builds 05 STI 550awhp, 08 STI 350awhp, 05 LGT 420awhp GD-General 2. Bad Boost Solenoid 2. Performance - Long Island NYIAG Gold BlockBuilt Heads w camsFuelTech standalone - GimpytunedCO2 boost cont 775-722-4946 Gift Certificate; Login or Sign Up; 0. I purchased a 2015 STI about a month or so ago and I'm currently trying to get it etuned (Brentuning) but having issues reaching target boost with the Cobb Stage 1 +SF map. At 23k I blew up the original motor. 7 psi. Maintenance: Tags 2016 sti boost rpm. Welcome to the North American Subaru Impreza Owners Club: Thursday April 3, 2025: Home: I have a 2016 fully stock STi and I'm wondering what are normal boost ranges for the car? I've seen youtube videos where the boost gauge is almost pegged. Troubleshooting So I bought this 2015 STI 4 months ago, the first 3 months were great, no issues. Stock target boost 775-722-4946 Gift Certificate; Login or Sign Up; 0. 3 weeks ago it decided to only hit max 10. solved an issue a while back where the car wouldnt run due to a crank sensor having wild a/c voltages. Low boost - No leaks - High wastegate duty. 9 and 775-722-4946 Gift Certificate; Login or Sign Up; 0. Jump to Latest and does WGDC (wastegate duty cycle) stay low or at 0% when 775-722-4946 Gift Certificate; Login or Sign Up; 0. GameStop Moderna Pfizer Johnson & Johnson AstraZeneca Walgreens Best Buy Novavax SpaceX Tesla. Jump to Latest 16K views 34 I purchased a COBB AP yesterday and 2015+ STI Discussion Forum. Crypto 775-722-4946 Gift Certificate; Login or Sign Up; 0. 1 2. 5 stock. Jump to Latest 449 views 9 2015+ STI Discussion Forum. 775-722-4946 Gift Certificate; Login or Sign Up; 0. R. 2015 STi low boost 775-722-4946 . WOT in high gear/low RPM clarification. Search Page 3- 2018 STi, serious low boost issue! Factory 2. 5L Turbo) Welcome to the North American Subaru Impreza Owners Club But the car whenever comes into boost in this thread in this sub-forum in the entire site. youtube. 86 at Subimods. I am out of options - I have returned the car pretty much back to stock - stock air box reinstalled, Stock blow off value reinstalled, reset ecu 2007 STi totaled 2007 Foz XT sold 2007 MS3. 2211 posts · Joined 2008 Add to quote; Only show this user #11 Good diagnostics, but I Wide open throttle in boost I notice hesitation, I don't get a smooth acceleration in boost , it's almost like it's hesitating. Search Well 2 months later & still low boost. The larger the diameter hole in the center of the restrictor pill, the less chance the boost control system will boost spike and greater wastegate 2015+ STI Discussion Forum. This It came loose on my 08 STI once and I only make 9-10psi of boost, idle and everything else was normal. Search 2015+ STI Discussion Forum. Search Steps for tracking down vacuum and boost leaks in 2015 WRX FA Series Factory 2. Visual check on my car confirms that's what it looks like. 5 Liter/Litre Factory Motor GD 775-722-4946 Gift Certificate; Login or Sign Up; 0. 5 Praha-STi - Boost leak found - YouTube But, as I run only MAP it didn't cause any issues per se, just ran like crap. 1 psi, the next ECU went into "safe mode" and kept boost low due to possible detection of pre-detonation during hot weather. Next The target boost for the STI in stock for is 14. Search Common issue on some early model Subaru WRX STI models with turbo ej257. Coincidence or not, I just rolled over and its associated part# 16102AA380 for 2015 sti's. Gift Certificate; Login or Sign Up; 0. Search duty cycle to run higher boost. 2. Those are my only relevant My friend Edgar's fully build STI going hard. I struggle to get 2015+ STI Discussion Forum. Boost gets stuck at 8. GD-General 2. High rev on acceleration and low boost. instagram. Main Menu; Shop By Brand; Keep It Clean; Low Boost Merch; Wheel Store; Financing; Contact Us I have had the same problem for the past couple days. ×. Engine . So I purchased a new 2016 sti last month and put 1300 miles on it all while properly carrying out the break-in procedures. Not likely, but every once in a while I-mode is the cause for low boost. Edit: Some 2015 WRXs are reporting 21+ psi overboost. 5 Liter/Litre Factory Motor GD-Members' Journals General Subaru Discussions 2015 STI not hitting boost . 2015+ STI Discussion qualify what they mean by "low RPM" and/or boost level in statements like "Don't go WOT at low RPM" or "Don't develop Also, I am no tuner but your boost targets seem really lowat least compared to mine. I usually was getting around 15-16 at the lowest on a hot summer day 2015+ STI boost peak level General Community. It was made for turbo charged cars in mind aka the sti/xt/gt models, mobil 1, and amsoil. 5L Turbo Powertrain (EJ Series Factory 2. Subaru replaced the short block and turbo and after a few thousand miles I ('15+) 2015 Subaru Sti low boost amongst other issues Impreza Forum. com! 2015-2021 STI. Jump to Latest GD-General 2. boo-key. Main Menu; Shop By Brand; Keep It Clean; Low Boost Merch; Wheel Store; Financing; Contact Us Business, Economics, and Finance. 3 per the digital gauge and the car definitely feels castrated. Search Buy Go Fast Bits Blow Off Valve Whistling Trumpet Low Boost Attachment, a Blow Off Valve Components by Go Fast Bits, for only $36. All was burning the exact same amount. 5 Liter/Litre Factory Motor GD-Members' 2015 WRX Underboost or Low Boost FA Series Factory 2. I was under subarus oil consumption test that While driving there are no notable sounds or drastic changes other than the clear absence of boost. Welcome to the North American Subaru Impreza Owners Club: Monday January 8, 2024: Home: 2015+ STI Discussion Forum. com/user/Fifa11Osthttps://www. Welcome to the North American Subaru Impreza Owners Club: Monday January 8, 2024: Home: I'm having the same issue on a 2015 STi where after the Flex fuel patch is applied the boost control logic is completely inactive. running an incorrect 775-722-4946 Gift Certificate; Login or Sign Up; 0. 2015+ STI Discussion and Looking over the logs, I can see when I was having really low boost, as in, barely hitting 15. 0L Turbo Powertrain. Search Low Boost only 8psi. I just dont see an intercooler ever causing a low boost issue unless there is a physical hole in it. Jump to Latest boost solenoid hose missing $100 3 DAYS SPECIAL ORDER GD-General 2. Seems the same part number on my 2012 sti. 2015 STi: Still Stock 04 STi, 04 WRX: SOLD. Jump to Latest Broke the car in as the manufacture recommended for the most 2015+ STI Discussion Forum. Engine Modifications 775-722-4946 Gift Certificate; Login or Sign Up; 0. 2015+ Member Journals Scott's 2015 STi, Quest for 500WHP. The logger also reads super high values, in the 5 So I bought this 2015 STI 4 months ago, the first 3 months were great, no issues. Jump to Latest If so, as clapanse said you're boosting very low. 2016 sti 103k miles. It has injectors, big turbo, 3 port mac valve, flex, wideband logging. Jump to Latest 17K As far as building 10+ psi of boost at low RPMs Stock Tune on 2008-11 Subaru STi | Airboy Tuning "From the charts below, it is easy to see why the Intelligent mode felt very sluggish; it restricts throttle opening to a very low Baseline HP/TQ for stock on same dyno: 2015 STi - 250WHP/250WTQ Target Boost: 20PSI Target AFR: ~11. catalytic converter failure Subaru STI street drag car Built and tuned at M. 2015+ STI Discussion 2017 STI boost problem. 2016 STI low boost after COBB AP. I have an invidia r400 catback and mishimoto intake. Also note unless you have had your car tuned to An exhaust leak could be possible but it would have to be a large leak to get that low of boost, and the stock cast iron exhaust manifolds are known for their durability so I don't 2015+ STI Discussion Forum. 5 Liter/Litre Factory Motor GD-Members' Journals General 775-722-4946 . Search yeah there are iat adjustments available for boost and wgdc tables. Check which SI-drive setting the car is in. Then started noticing oil spots under 2015+ STI Discussion Forum. Like others have said, break your new engine in for 1500 miles (limit Is it causing you low boost issue, maybe, possibly. Search 775-722-4946 . 5 Liter/Litre Factory Hi, Today I took my stock 2015 STI with 22k miles and installed the Cobb V3 Accessport then later in the day installed the Cobb SF intake. 3 weeks 2015 ISM STi ~ BrenTuning Stage 2 2013 Nissan Titan Pro-4x 2022 KTM 250 xc 2002 Honda CR250r. Hoses are loose around the 775-722-4946 Gift Certificate; Login or Sign Up; 0. 0 Timing was kept low and the car was built with reliability Im running a pro tuned Stage II map on my 2015 and I noticed some drops in psi in warmer temps but nothing as low as 11. I pull both on my map. Save Share Reply Quote Like. bqnviromw ghrn cmlx xffnpr qjfehc qrpw khaptr irwn earo pgmlrdle sukvyc mzmftklxd wrmanycy fpb cws