Here's the manifold in place.
After fitting it, the engine notcably ran a little leaner on low throttle settings. It is about 15mm lower than the original and so will help in my future plans of ditching that bonet scoop.
I have a TFSI K03 turbo
Was cheap-ish before freight was added from Aucland.
Was described as having no play - but that was not entirly correct.
The hot side turbine wheel is identical to the one I already have, but the compressor is about 5mm larger as is the cold side housing. It is said to be able to deliver up to 280hp on the 1.8T with boost up to redline, I think that figure is more than ample as I don't have that now. It isn't a bolt on job, the manifold ports are the same, but the stud placing is different as is the exhaust flange. So some dicking around is necessary.
Problem is, now that I have it, it seems it might not fit
. the outlet flange is quite large and might hit the top chassis tube - bugger. The only way i'll know is to take the other manifold off and offer it up. It might have been easier and maybe cheaper if I'd just bought that K04-015 from Aliexpress in the first place
I have a plan if it won't fit. Knowing the turbine is the same on both turbos and they share many common parts, I will add the new larger cold side onto the original hotside, making a hybrid.
Here is a screen shot of a log done recently, second shot close in. You can see the boost (MAP in red top graph) drop away as the revs rise (white), with max MAP pressure around 5000rpm, but the boost duty (white lower graph) is increasing. Admitedly I only have 60% boost duty set at present, but at 7000 rpm it is basicly only pushing 5psi boost.