Should be more of an all round turbo coming onto boost as low as 4500k, a single T88 won't see any massive boost until at least 5250k. The TD-06's will flow enough air for 750hp. Will know more when there bolted up.
Think you could compare these turbo's with HKS 2835R's, they've got an 80mm inlet entry aswell. Out of the two, hard to say at this point but from the information I have gathered the TD06's should be less laggy then the T78 and flow a bit more air aswell.
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