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  1. Jetta/GLI VI
    So I’m trying to figure out if my car is tuned or not, I bought it used. I have a Gen 3 2013.5 GLI. I don’t have a boost guage, OBD Fusion is showing 18 psi, anyone using an obd scanner on a tuned motor have any numbers? Car does not feel like stage 2 even with those numbers, could boost curve...
  2. GTI 337/20th Anniversary/Jetta GLI Forum
    hello all, car noob here, i bought a 2002 mk4 gti with a 1.8t a few months ago and the car ran amazing, it was flowing 20 PSI and I had a blast driving the car every time i was behind the wheel. then one day on the way to my buddy’s house i totally lost boost, the car was pushing about 5 PSI, so...
  3. Golf IV & Jetta IV
    I have a 2003 volkswagen jetta 1.8t mk4. My issue is (and just started recently) i can be driving for half and hour and have normal boost. Then all the sudden i can only get 2 psi max in any gear and rpm. I dont know why this started. But really the only “mods” i have is a 3 inch no cat exhaust...
  4. Golf VII R
    Hello, I own a 2015 Golf R, FOB with an autotech HPFP internal. I am currently protuned by Stratified. I am also experiencing some fueling issues with my car. When WOT at 4,500ish rpm the car will accelerate for fraction of a second, then stutter, then will continue to accelerate like a regular...
  5. Golf V & Jetta V
    Hello everyone, I own a 2010 Volkswagen Jetta Wolfsburg Edition 2.0 TSI with a 6 speed manual. I'm having boost problems, car is not boosting whatsoever, and we already did the following tests: -Changed DV -Changed N75 valve -Checked the Boost Pressure Sensor (MAP) -MAF -Did a pressure test...
  6. Golf IV & Jetta IV
    BOOST CUTTING AT 4k RPM I have a 2004 1.8t GTI, 5 speed. When accelerating it starts building boost and cuts and completely lags out the car right around 4k rpm. I am not receiving any engine light or warning, and it continues until I let off. If I am gradually accelerating it does not do it...
  7. A4, S4, RS4 (B6 and B7)
    I recently bought a 2003 a4 quattro 1.8t and installed a boost gauge after noticing missing power. At lower rpms the car can reliably build and hold about 10psi, but after 3500rpm the boost drops quickly down to 0. I don't think it's a boost leak because if I keep the rpm's low, the car doesn't...
  8. Golf IV & Jetta IV
    Alright so long story short old turbo went put in brand new borgwarner ko3 sport. My car is a 2002 station wagon with a 1.8t awp. After new turbo install it will only let me build like 4 pounds. i have replaced numerous vacuum lines, have a forge 008 dv with the 15-23 pound spring, replaced map...
  9. Golf SportWagen VII
    Just because its slow here, but also cuz its on my want list: " cuz its kewl but has to be for a reason" https://www.goapr.com/products/engine_hardware/gauges_and_pods/gauge_and_pod_kits/parts/MS100148 Plus its better than a +5hp decal. Almost bone stock.
  10. Golf IV & Jetta IV
    alright so to start my old turbo went and ended up buying a brand new borgwarner ko3 sport from ecs tuning. now everything went in smooth no issues. it wasnt till i drove the car i realized there was an issue. im going to list all the stuff done to the car before i get too deep. Ebay special...
  11. Golf/GTI VI
    i have been trying to figure this out for some time. i will reach peak boost and hold on most pulls but then drop off of boost in the upper rpm range. checked for leaks. (may check again dv+ installed (same with and without) CTS ko4 turbo CTS intake the STFT will go to 1.25 for a bit in the...
  12. Golf IV & Jetta IV
    I have a 2004 gti 1.8t awp it’s stage 2 tuned Been having problems with boost Video here October 15, 2021 In the video it tries to get to 20 but falls to 5 Once it’s hitting around 20 psi it instantly slams to 10-15 or lower then back up to 20 Once it’s hitting around 20 psi it instantly...
  13. Golf V & Jetta V
    Hello I have a 2006 VW Golf GTI with a 3" Downpipe, RAM Air Intake and a custom Stage 2 Tune. Of recent I've been facing a strange issue that when I'm just cruising and apply slight (light) throttle, there increased intake noise and surge/fluctuation of boost. The car stutters (something...
  14. CC
    Okay so Im gonna get straight into it, so I have a 2013 vw cc 2.0t 6spd 85000km on it stage 2 IE crackle tune currently, k&n cold air intake and a catless downpipe to an vibrant ultra quiet res straight back. I got my exhaust done a few days ago, noticed a bit of a throttle response delay but...
  15. Golf V & Jetta V
    Hi guys. Im newly registered to the forum although i have been viewing the forum for a long while trying to do preventative maintenance. I have a stock standard 2006 jetta mk5 dsg with a BWA (BPY). Currently sitting on 121000km. I have tried to do preventative maintenance on the car and changed...
  16. The Volkswagen Lounge
    So I have an AE GTI and its built to hold 500hp with a 24lb boost tune. It has an F21 hybrid Frankenturbo. It started overboosting up to almost 30 lbs so I need to fix it immediately before damage is done. I’ll link a video I watched, and is it going to be as simple is that just going the...
  17. The Volkswagen Lounge
    Hi all, got a golf plus gt TDI 2.0 few days back, when I put my foot down and hit about 3k revs my engine light comes on with a ‘emissions workshop’ message, when I took it to the garage he said the Thurso is over boosting, don’t all relevant boost pressure checks and all the pressure stays same...
  18. GTI 337/20th Anniversary/Jetta GLI Forum
    Hello, does anyone know how to install and route a electronic boost control solenoid(3port) to a external waste gate setup
  19. Golf IV & Jetta IV
    Car is a vw golf mk4 pd115 4motion So i have recently noticed a faint hissing/whistle sound after remap(i don't know if it happend right after the remap or a bit after, remapped the car about 3 weeks ago) Cant really pinpoint where it is coming from, but what i can say is that it is the loudest...
  20. 2.0 Liter Engine Forum
    Good morning all. I've created this poll to gauge interest in possibly creating a pre-order for our upcoming turbo kit. We aim to keep this kit as flexible as possible so with that some people might not need/want the tuning offered with it and prefer to go another route. That may be standalone...
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