![]() ![]() With our fix implemented, all our GTI tunes now drive smoothly and responsively without any such lag/surge feeling. Then it would suddenly shut the DV and result in an odd surge of power. Before the fix, the ECU would keep the DV open, bleeding boost and creating a feeling of lag. This issue was most commonly noticed at part throttle operation around 3000RPM and around 40-50% throttle. This allowed us to control the DV and fix a factory tuning issue that was causing drivability issues for many GTI's. This is an industry leading improvement that we discovered and resolved by identifying the necessary ECU tables and working with Cobb Tuning to add these tables to their AccessTuner software. Resolved factory inherent diverter valve control issue on all GTI tunes. It may be a factory tune issue/'feature': Will update when i get my new MAP installed.Well known issue on GTIs, I assume with IS20 the A3, stock calibration is quite similar and may suffer from same issue.Įverything I read makes upgraded DVs sound like more trouble than they're worth and better off staying with stocker. am I just very unlycky with the turbos im getting or is there something logical that could cause all this? I need answers as Im losing my damn mind over this. They told me its very weird that my turbo makes that kinda noise AND they told me there was play in the bearings I asked them if the overboosting could have broken the turbo 2 different times in different ways and they told me its vert very unlikely since the computer activates limp mode everytime overboost happens. another weird thing: while I got my dpf cleaned they notified me about the turbo making a lot of noise which i told them i had noticed and found weird, but wasnt really too put out since it was a new turbo installed by a professional. If that doesnt help I guess I’ll have to double check my intake manifold and intercooler etc if theyre clogged. They found it weird that my other mechanic figured the dpf could be to blame since the code apparently couldnt in any sircumstances even mean that the dpf is clogged… Welp now im waiting for a bosch MAP I ordered and will replace the original one. Turns out that while it was pretty clogged, it didnt really affect anything and am still having same problems. Well anyway they told me it could be possible that my dpf is full of carbon buildup and i should get that checked out. Went to a mechanic (again) and they told me theres an issue with overboost which for some reason my reader read the code as ”oil temperature sender” idk honestly. Thank you in advance.Īlright so a little update. Correct me if im wrong.Īny ideas of what could be the problem? N75 valve or? Im honestly stuck with this cause as a student im really tight on money and am trying to sell the car. I also got a code for solenoid 1 (n88) but dont believe that would affect anything that has to do with acceleration/lack of power. Only when sitting at around that 2100rpm mark at 110kmh. Also it doesnt throw the code when accelerating. When i slowed down it didnt come back again. Now i checked for fault codes and it threw a code of ”oil temperature sende” when driving at about 2100rpms. When i change the gear it will move normally and accelerate 80-100kmh in just a couple seconds or so. Im talking several second 80-100kmh if not over 10. I could understand it being a bit slower but it just doesnt really pull at all. ![]() Plus now its like really slow in the high rpms. I called another mechanic about the issue and they told me its possible my original turbo had a bigger turbine/flaps or something along the lines but it still doesnt explain the fluttering sound. Now I’d say it pulls better in the lower rpms but still has no power in the high rpms and has this weird flutter sound when letting go. Deleted the egr system by blugging the end of the exhaust manifold and coding it out of the picture. I got the turbo changed again at a mechanic. Checked everything and replaced the MAF.Īfter not finding anything I took to a mechanic and sure enough the new turbo was bad. Still I took it for a spin and sure enough: no power in high rpms. I replaced the turbo and immediately heard this weirdly strong woosh sound when building boost, and some flutter when letting go of the throttle. In Finland we call it turbo clock but dont believe its the right term in english) on the turbo, where the shaft thing is connected was stuck, and I only got boost in high rpms and was very sluggish in low rpms. Basically the actuator(? Not sure if its the right term. Not sure if this is the right forum but here goes: ![]()
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