papaparfitt

Hello, I need help!!! I have upgraded my Tt 2.0 tfsi with a Unitronic K04 turbo. I also have Unitronic Intercooler, 3" downpipe, APR CAI, NGK Iridium IX plugs. Apr coils, 3" exhaust. High flow cat, and a 3 bar map sensor. GFB DV+... after install and tune by ECA concepts the car has a ton of power. My problem is under hard acceleration it seems to miss/surge almost like it's trying to shift but doesn't shift and the RPMs spike up. Is this the tune? The map sensor? Bad Diverter? Bad N75 valve? I'm holding about 14psi boost. And under diagnostics, all the sensors are sending back solid info... do I need a tranmission tune? Any help is appreciated or even pointed in the right direction... I have a VCDS Ross tech cable and can do logs if that would help out! Thanks in advance,

steve.

Airosskopf

Have you done a high pressure fuel pump? that could be a culprit, engine not getting the amount of fuel it needs for the new power

papaparfitt

I was under the impression that the 2.0 tfsi already had the necessary fuel pump for the k04. If I'm wrong please enlighten me.