Volkswagen Passat Forum banner

boost

  1. 03 Passat Stage two boost loss

    Volkswagen Passat B5 Discussion
    Hello this is my first post on the forum so bear with me, but my 2003 Passat has a stage 2 ecs tune. I believe it’s ecs not entirely sure, but it’s definitely a stage 2 I swapped it from a 2000 Passat where it only made 10lbs of boost consistently but occasionally would hit 20 and creep down to...
  2. Where did my boost go?

    Volkswagen Passat B5 Discussion
    On a road trip into BC, Canada right now, camping around different places and sometimes my phone doesn't have good signal. I've got a good assortment of hand tools with me, but left the laptop with the Bentley manual PDF's, VCDS-Lite and the KKL cable at home in Portland to have one less thing...
  3. No boost no codes

    B5 Garage
    Yesterday while driving I stopped at a light and when it changed I go to give my car gas and i’m Getting no boost, tried clearing codes, I switched from my apt 93 file to my stock one checking if it was the tune: had no luck with any of those. Car runs and drives but I have no boost or decent...
  4. Fk’n boost

    Volkswagen Passat B6 Discussion
    Hey just wondering what is the normal bar reading for boost on the 2.0 tsi? Going to run a live and don’t know what number I should be looking for... problem is everything keeps blowing off. First it was the exhaust pipe running to the turbo, then the breather hose, I blew through two pcv’s...
  5. Boost and Oil Pressure Gauges

    Volkswagen Passat B5 Discussion
    Looking to possibly get the setup where these two gauges are either above the steering wheel just below the factory cluster, or I've also seen them on the left pillar. Just curious if anyone knows where to get these setups, and if or why one is better than the other as far as visual...
  6. Is this boost safe

    Volkswagen Passat B5 Discussion
    Hi My car is boosting 1.5bar, is the good for a stock car? Details I have a standard 2005 Passat 1.8t Tip (engine code AWT). What was done Complete rebuild of motor bottom to top. I replaced rings, big ends, main etc.... The blocked was re-sleeved as the engineering shop messed up when the...
  7. 1.8T Turbo Surge Engine Revs Up And Down Under Boost

    Volkswagen Passat B5 Discussion
    I have a 2003 VW Passat 1.8t with a cat back exhaust system and previous owner removed the catalytic converter. It starts up and idles good no misfires but when I'm accelerating building boost the engine starts too surge and rev up and down like the boost controller is pulsing the waste gate...
  8. Not reaching full boost potential

    New Member Introductions
    Need help, having trouble diagnosing this. I have a custom car with a 2003 1.8t passat motor. Just installed 550 injectors and Motoza tune. The car runs good and I would not Know it wasn't getting to full boost without Motoza telling me. Motoza is telling me the boost is only getting to 15 psi...
  9. Need some help with boost issue

    Volkswagen Passat B5 Discussion
    So my boost will spike to 13psi them fall back 8. I tried a new n75 but it was opening the wastegate at 5psi and throwing a turbo underboost code po299. I have a obd11 and was driving around last night watching some of the live data and noticed that the engine load was either 0% or 100% nothing...
  10. 1.8T Stumbles Once And Awhile At Idle, Misfires Under Boost

    B5 Garage
    Hi I have a 2004 VW Passat 1.8T GLS with a stumble misfire when warmed up from a cold start. Under boost the engine would cut out on all cylinders when the gas pedal is pressed down at a certain point. I have a crack in the exhaust flex pipe before the catalytic converter I thought the down...
  11. Requested/Actual Boost Help

    B5 Garage
    I recently got VCDS and have been doing some logging. Just trying to hunt down a part throttle bucking/hesitation issue I've been struggling with. I want to say that I'm not sure if my numbers are worth looking into or not because I can't really do a WOT run to redline right now because the...
  12. Poor Boost

    Volkswagen Passat B5 Discussion
    My 1.8t awm 03 is in limp mode. Did boost test with vagcom measuring block 115 and read 990 mbar before start up, during iddleing and below 2800 rmp under load. Peaked at 1670 mbar(approx 9 psi gauge reading) abover 3000 pm. No CEL nor codes when scanned. Am I looking at Turbo proble or...
  13. Boost question

    Volkswagen Passat B5 Discussion
    98, 1.8t, SW The bottom of the airbox had a quarter size crack where it was bolted to the body. The boost would reach 8-9 psi. The other day I went to the junk yard and got good condition bottom part of the airbox from a 99 1.8t. Now the boost reads 3-4 psi max. I feel no loss of power. Is the...
  14. Passat boost problem

    Volkswagen Passat B5 Discussion
    My passat has ATJ engine, 1.9tdi year 2000 Problem is that after car hits 115km/h it feels like turbo just fells off. No boost after 115kmh. Like literally no boost, 9bar Did VCDS and got 17964/P1556 - Charge Pressure Control: Negative Deviation I have renewd all hoses and tried with 2 n75. no...
  15. APR chip having problem with boost.

    New Member Introductions
    I recently just got a APR tune done to my passat 2003 1.8t. I upgraded the DV to the 225 audi one. Before tune my N75 valve was bad and was surging. I swaped it out with a new N75 oem for stock 1.8t. Tune went well for about week then it seem like I had no boost whats so ever. Again my...
  16. Clogged cat - replace or delete?

    B5 Garage
    Hey everybody, I found out that my 2005 Passat isn't getting boost because of a clogged cat. A mechanic quoted me $780 to replace it, but when I said that might be too much, he told me I could also just put in a delete pipe. He said he wouldn't do it because he could get in a lot of trouble...
  17. Boost Gauge Reading Question

    Volkswagen Passat B5 Discussion
    Hi everyone, So I installed the boost gauge (not completed it) on my AEB 1.8t, 98 model. I wonder if the boost reading indicates a healthy turbo boost. Below is the link. I recorded it in the parking lot but while driving the needle barely moves to 4 (above 0 ) when I floor the throttle...
  18. Feels like boost is lacking but VCDS says opposite

    B5 Garage
    I'm trying to find if I have a boost leak. I just did a few pulls with VCDS running and the charts seem off. I'm looking a block 115 to be specific and my "specified" and "actual" boost levels peaked at 1600mbar and 1980mbar (23.2psi and 28.7psi). I thought the little K03 can only do about...
  19. *URGENT* "Overboost"/Limp mode/No boost issue after FMIC install

    Volkswagen Passat B5 Discussion
    Car info: B5.5 (2003) Passat Wagon 1.8t; AWM; no engine modifications except recent FMIC/DV relocate. About a month and a half ago (maybe more, maybe less I've lost track of time) I noticed a coolant leak from my radiator and while searching for the point of the leak I also found that my SMIC...
  20. Passat Unitronic Stage 1+ low boost

    B5 Garage
    Hay Guys need some input. I got my 04 AWM chipped in october and it was great ran to 18 lbs all day long then last month randomly it wouldnt go past 10 psi and one day it hit 5 psi and a cel came on for turbocharger overboost. The car still os only max about 15 psi I'll make a list of wat ive...
Top