I have an s3 1.8t AMK which seems to have an issue where it feels like it pulls a lot harder when I partial throttle compared to full. Is this likely to be a tuning issue or something else? I am not sure what tune is on it but there car came with a dyno print out which reads 280hp so I assume it's a stage 2 tune although the car doesn't isn't setup for stage 2, I think the previous owner may have removed some parts and put it back to stock but left the tune the same. I have attached a log which was a full throttle pull in 4th gear and I've attached the tune which is on the car. Please can someone tell me if this looks alright?

Sorry I didn’t spot that rule, I’ll do a propped log today.

Thanks for the link to that throttle cut page, I hadn’t spotted that on the wiki when I had a look. The car does have an abs light on at the moment for the back right sensor which might explain the issue. I’ll get an updated log today and I’ll see if I can also het the abs sensor changed today.


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oh wow, I guess it was put back to standard before it was sold to me or I may have given the wrong .bin file since I had 2 files on my pc (one stock and one from my car). Is it the same for this is definitely what's on the car at the moment.

original file
8N0906018J
0261206794
360314

Best performance at mid-range....4500 is the only time your actual boost follows the requested boost 1.4b
You need to review the boost after 5000 it's not right

Would you say this could be because of a mechanical issue such as a boost leak or is this definitely a tune issue?

I guess that could be happening, so I'll look into this. I have also just noticed a large tear in my pcv system from the valve cover to the hockey puck so I wouldn't be surprised if there are more leaks in my pcv system. I have ordered a catch can kit so that I can get rid of all the old stuff and know that there are no leaks coming from there.

I'll also be getting rid of the 008 forge dv on the car and replacing it with a stock dv. I'll run some more logs once I've done these things to see if there are any improvements.

As for the tune in the car, I have tried comparing it to a stock .bin file and I can see there are differences between the 2 but I don't know enough yet to be able to tell  if it's stage 1/stage 2 or if there is any more I can squeeze out of the car on it's current setup once my other issues are sorted. Are there any resources or guides on how I can figure this out.

I'm also assuming you already checked for boost/dv leaks.

You have some lambda correction activity which is sus.