I have a GT2871 with a Tial turbine housing that I was originally planning on using on my setup (AbsurdFlow EWG manifold/DP). One thing that has me a little worried about this turbo is that there are a few nicks/dents on some of the turbine blades. I've been told they resemble balancing marks, but I don't think so.
What do y'all think?
The other thing I don't like about this turbo is the compressor housing. It's tiny! The inlet is setup to put an adapter on it which I'm not a big fan of and the outlet is only 2", when I'd like to run 2.5".
Now, if the turbine blades are in fact in good condition I could just purchase something like this to step up in size. T04S frame .70 A/R Compressor housing for GT3071R/GT2871R 71mm 56 trim wheel : atpturbo.com
The other option would be to switch turbos. I can pick up a PTE 5858 from a buddy for a good price. I can also consider getting something else. Before everyone starts saying "EFR! EFR!", the first size of EFR that is EWG is the 7163 and it costs a pretty penny (it's compressor housing outlet is also 2" which I'd preffer 2.5").
Thing is I don't want a "peaky" setup. I'd like the car to have decent power under the curve and not have high boost threshold or lag. I understand this depends on my motor, which is a 1.9L with a BP4W head (+1mm intake/exhaust valves, SuperTech 56 lbs springs, MSM intake cam) (More info on my setup here Let's make a Miata that shoots rainbows
). This is the first Miata I've owned that I will be doing FI to; all my turbo knowledge comes from the Evo world and things are quite different over there lol.