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  1. Golf V & Jetta V
    Hi All, I've attached my most recent Vag-COM log (Yes I verified it is current). Here is what I tried. The car struggles to accelerate regardless of how fast it's going, and when it is accelerating, it rolls coal BAD. 1) I verified there are not any leaks in the intake rubber tubing 2) Cleaned...
  2. A4, S4 and RS4 (B5) Cars
    Sparknotes: 109,xxx Miles Stage 2- (Chip+Exhaust) Excellent Mechanical Condition with Zero Codes and No Known Issues 2 Owner West Coast Car with Clean NV Title in My Name Photos + Videos: https://photos.app.goo.gl/C6FaoDW3kqQhAGhE9 Full Details: First purchased at Audi North Scottsdale...
  3. Golf/GTI VI
    Hey guys, just recently my turbo broke. I was driving and my car all of a sudden lost power, and I couldn't rev above 3k rpms. I took it to the mechanic and he said it was because I was creating to much boost since I have a stage 2 tune from EQT. Im now stuck with either replacing the turbo and...
  4. Golf VI R
    Hey guys, I got a tune (ecu + dsg) recently with hardware: catted downpipe & intake (intergrated engineering). Rest is stock like the DV. Car now flutters like crazy with any amount of boost built, it will flutter once you let off the pedal. (sometimes not fully with lower rpm) Much more...
  5. Tiguan (PQ35)
    Hello -- have infamous underboost P0299 code and diagnosed "bad turbo" likely due to waste-gate actuator linkage issues. Going to replace with OEM-similar K03 from IHI or BorgWarner. In addition to the turbo itself and new "install kit" with gaskets, crush washers, studs, etc -- what...
  6. Golf IV & Jetta IV
    I bought a 2006 mk4 gti 1.8t about a week and a half ago. The car has an upgraded ko4s (hybrid I believe) turbo. I recently replaced the n75 valve because the car was surging which fixed that issue. The car was running fine until I noticed that the boost seemed to be cutting out at around 3-3.5k...
  7. Golf IV & Jetta IV
    I'm doing a turbo kit on my 2001 VW Golf with the 12v vr6. I need to get a standalone for it and the only one I've found is the ECU Master Black Series. Unfortunately, it is for the r32 3.2 vr6. Would it plug into the 12v wiring harness, would I have to do custom wiring and plugs, or are there...
  8. A4, S4, RS4 (B6 and B7)
    I want to do a stroker build on my audi sometime. im going from 1.8t to 2t with forged rods and pistons aswell as an upgraded turbo. But im not sure how much hp i can safely push without the engine blowing up. im hoping around 400, but im not sure. so, does anyone have an idea?
  9. Forced Induction
    Im currently planning to upgrade my turbo and ive got some questions. Im currently stage 2 on my stock IS20 and as of right now the plan is to upgrade to the Shuenk IS38+ turbo along with a proton and the supporting mods. Ive heard bad things about a basic IS38, is it true? Ive also heard some...
  10. Phaeton
    Hi,i want to buy a project w12. I am thinking of a lot of things. And i serched and serched,but nothing found. I need a custom twin turbo set-up in EU,i am willing to come in person and drop off the car and all of that. For now i am just asking to see if anyone is intrested. Not even bought the...
  11. Golf R (VII) Parts
    Looking to sell the remaining parts for my 2018 Golf R turbo kit. I sold the car before installing any of the parts. They’re all brand new in box. HPA FR500 IS38 Hybrid Turbo Kit with Turbo Muffler Delete - $old HPA Catless Downpipe - $old HPA High Pressure Fuel Pump - $old Wagner...
  12. Golf/GTI VI
    Howdy, Just had my downpipe replaced to a catless dp and tuned it the same day. I am experiencing a turbo sound that doesn't sound too healthy. Unlike a regular turbo spool, it sounds like a lot of air is coming out every time I accelerate. I also feel like the DP wasn't fitted right. Any idea...
  13. 1.8T Engine Forum
    Hello, I'm new here, i'm writing here in my despair, as no mechanic wants to dig in to this problem (I'm not one). I have a VW Golf MK4 with 1.8T engine, AUM engine code, equipped with K03s turbocharger. I'm witnessing a problem with the turbo, as it often won't work during acceleration, or...
  14. Tiguan (PQ35)
    We are new to owning a VW Tiguan. I appreciate any help you can provide. Our 2013 Tiguan was over heating. The dealership determined it was due to the electric fans not working properly. While assessing the fans they determine the turbo is not working properly. To repair both the fans and...
  15. New England Cars
    Looking to trade my mk5 R32s 160kish and mechanically great shape, body's not perfect but shines real nice, pending in the car is like cash on top obviously High preference to mk2's and rabbit pickups, would consider other engines in those with appropriate cash on top, I value my r around $9500...
  16. Passat (B6)
    Hey all, Fair new to this all, wondering would it be possible to add an intercooler setup into my 2008 1.4 tsi passat its the caxa model 122bhp. It don't have an intercooler so I was thinking of adding one in. And mapping it to something like 160bhp. Currently i have a cone air intake but...
  17. Forced Induction Classifieds
    Heyo from Minneapolis Minnesota! I have a few parts for sale off my VR6 Turbo build. All parts are in great working condition and gently used. About 200 miles on parts before put into storage. Prices are OBO. Willing to ship at buyers expense. Paypal or Venmo preferred, buyer pays payment fees...
  18. Golf II & Jetta II
    I was looking at picking up a 1992 Jetta MK2, 5-speed manual. Has anyone installed an aftermarket ECU? My end goal was to put a small(ish) turbo on the engine, and from my research, I have found that the Digifant 2 system cannot handle boost. I'm aware that this is not the easiest thing to do...
  19. Golf V R32 Cars
    2008 VW R32 Turbo. Tuned to 700+ HP. ONLY 36k miles Looking for $35k or best offer. Open to SUV trades plus cash. Color: Deep Pearl Blue Internals: stock NAV, Fuel and EGT, & Boost gauge. Just to list some motor/performance modifications: United Motor Sports Tuned; not recently dyno'd -...
  20. Golf IV & Jetta IV
    Hey I’m looking to boost my 2003 vw Mk4 GTI. I kinda would like some advice about going it. This is my first vw and I haven’t boosted one so please help me out with what I’m going to need to do this project. Thanks for your help
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