[chittychittybangbang]

Not sure about upgraded turbos, I'll try to put together a chart. Of the top of my head, not sure the CFM but it can handle about 15-20 psi in normal driving, stock setup.

More specs below.

COMPRESSOR STAGE:
Wheel Trim - 56
Wheel Diameter (inch)
inside dia. - 1.29
outside dia. - 1.73
Hsg A/R - 0.33
Max Flow - 18 pounds per minute

TURBINE STAGE:
Wheel Trim - 70
Wheel Diameter (inch)
inside dia. - 1.42
outside dia. - 1.69
Turbine A/R - 0.65

COMPRESSOR CONFIGURATION (inch):
Hose inlet - 1.75
Hose outlet - 1.50
TURBINE CONFIGURATION:
Hose inlet: 3 bolt inlet
Hose outlet: 3 bolt outlet

 

[chittychittybangbang]

I think that a problem you are going to see is that many aftermarket turbo makers who make "hybrid" turbos won't want their specs released or don't give out that information because then other people can copy it. You are best making an estimate of how much power it will make with approprite supporting mods.

I've been trying to put together a list but that is the exact problem.

 

[chittychittybangbang]

I was working on it but these things take a while to put together. Thanks for your patience.

 

[chittychittybangbang]

A turbo upgrade chart is up. It covers all TDI for the US/Canada market. There's room for improvement so expect it to change in the future.

See here:

http://www.myturbodiesel.com/1000q/tditurbo.htm

It's not possible to list all the CFM , possible PSI that they can support, how much power it makes, etc, since these figures are not known, the vendors don't want to give them out since it would be propriety info, or because those values are highly subjective and vary by car, setup, tuning, etc.

 

[chittychittybangbang]

I'll ask and if there are any updates they'll go up.

 

[chittychittybangbang]

Don't forget that a lot of these mods are by trial-error engineering. That's not necessarily a bad thing if it produces a good product that ends up being a retail product but in thoses cases you won't have a flow chart, you might get a CFM estimate, but you should have at least the wheel sizes. The tweaks to the housings will also effect things. And of course tuning makes a big difference too.

Yes, that adds to the difficulty of getting specs. It's best to contact the vendor directly to see what supporting mods you need and compare. This list is just so one can quickly see what's out there.

 

[chittychittybangbang]

Made some major additions, added specs for many mk4 turbos.