It mentions overspeed (aka: high rpm from too much boost or a boost leak), and other than that shows that inconel is less brittle than TiAl. Nothing new there. Side note: Borg EFR turbos that are all the rage now have TiAl turbines.
It is a superior material for turbine construction if it is done right and used within its design limits. The question is: is the 20g beyond the design limits of the MHI TiAl turbine that was made for a 16g compressor. I think it is ok if you keep the turbo RPMs within reason.

~Jaraxle

 

I used to run a 20G wheel on my old Evo6RS turbo, no issues, then again I only ran 18PSI so not really pushing that turbo hard.

 

I spoke with FP about the 71HTA paired with the TME wheel and they said it should be fine at 24 psi or less.

 

I have moderate success with my 20g turbo it was installed in Sept. - Nov. 2012. I'm still on the 20g turbo, granted didn't thrash it until the following yr. mid spring when I started autocross. Its def. not a autocross turbo, its very frustrating anyone whose autocross a slightly larger turbo. I would also like to say if I was to do it all over I probably take the hint people on this thread are guiding you...71HTA. Actually doing so later during the yr. It sounds every bit great like any Fp anti surge cover I say that. I'll try to dig up dyno chart.


Here is the 20g. its a snail turbo (the company) (10 blade design)) mated to TME. Here enjoy my potato quality HD pictures:








Taking this past weekend(1/23) when my filter took out my MAF