^^ The wheels are quite different aerodynamicly but they seem get pretty similar hp results. The greddy has a slightly bigger turbine wheel and the garrett a slightly bigger compressor.
I reckon the greddy has more of that turbo boost hit whereas the garrett is a bit smoother in the way it comes on.
My info tells me a td05sh-18g is rated at 400hp and is generally oil cooled but i see some on ebay now that are water and oil cooled which i would love to try.
The gt2871r is oil and water and rated at 420hp for the 56trim .86 which is probably the more similar turbo to the greddy debatable though i guess.
I reckon they are both the best allround turbos availble for these engines.
I reckon the greddy has more of that turbo boost hit whereas the garrett is a bit smoother in the way it comes on.
My info tells me a td05sh-18g is rated at 400hp and is generally oil cooled but i see some on ebay now that are water and oil cooled which i would love to try.
The gt2871r is oil and water and rated at 420hp for the 56trim .86 which is probably the more similar turbo to the greddy debatable though i guess.
I reckon they are both the best allround turbos availble for these engines.