Hello all, I'm new at this forum. Sorry if my english is not so good but I hope everything will be clear enough
So I have problems with low power. Driving 1.9cdti 150hp Signum. It feels really sluggish if I floor acceleration pedal from like 1,2k rpm and it rises very slow, after it reaches like 2,2k it feels much more better, I can feel turbo working then, but seems that it's still not right. Some other example is if I drive at ~1,5k rpm and then floor it, it feels much more better.
So what is already done to the car:
- DPF removed, mapped out.
- EGR blanked, mapped out (but only blanked at two sides on EGR, I mean it's not blanked on exhaust manifold side because it's really hard to get there.. but I believe it's not a big deal? Or it could impact such power loss? )
- Swirl flaps removed.
- New MAP sensor.
- New boost control solenoid.
- Second hand MAF sensor, I took it from a crashed car but it was driving good before, so I guess it's alright..
- Cleaned injector contacts. Used zip tie on them.. Anyway all contacts looks good and shine, but 3rd injector contact seems really dirty, even after cleaning it, it becomes dirty fast, so I'm not sure should I buy a replacement kit for it.
- Cleaned throttle body, it was full of oil, but I haven't had any problems with shutting the engine, and as I know throttle body doesn't have anything related to power??
- Turbo actuator rod seems to move freely enough.
- Changed all vacuum lines going from vacuum pump to boost control solenoid and turbo.
- No black smoke or other smoke, just sometimes little blue smoke when starting car in cold morning.
- No fault codes.
Currently I'm thinking of looking for splits in pipes but if they were leaking wouldn't I hear whistling or similar sounds when driving? on weekend I can do video of turbo actuator rod movement and also can make a live log when flooring down from 1.2k in third gear if someone could help me read them cause I don't understand them good.
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