Lets talk hybrids

[dr_jekyll]

I think you've missed the point. What i'm saying is that stage 2 on an hdi puts a lot of stress on the head due to increased heat and back-pressure, to a large extent this resticts the power. Fitting a hybrid turbo doesn't help with this issue, instead it compounds it further and rather than getting a good gain from it, like many of the vag fanboys see, you will only see an increase of a few horsepower. Not only that you will be putting the head under even more stress. Tbh now knowing you're still running a stock diameter exhaust i'd emphasise that even more, the way you're going is just a recipe for killing a head every 10k.

What makes you say you can't get a bigger turbo than stock without going gearbox-mounted?

Been on my setup the last 25k thrashed every day. Yeah can see your point on the exhaust diameter. Flows gonna be crap and will deffo raise egt's. as for the head id be surprised. 210k motor still living 100% fine.

The gearbox mount is a personal preference. 1 i want the room to be able to play with the turbo, 2 makes play, adjusting etc much easier.

Its just a huge funds issue. The spec ive made so far has been pretty hench considering my budget