Quote:
Originally Posted by DeBiase
OP Since you have done extensive work on researching compressor maps. Which would you recommend for a great midrange (around 4K RPM) but also a good top end, as it will be primarily a street driven car maybe some track days here and there. I saw the 2867 map and am worried about over speeding the turbo if I try for too much airflow. Then again the mid range in the 3071 seems a bit lacking. Thanks for the input. All others are welcome to input and help me in my future turbo selection.
PS the non-X GT3071R seems to have a good midrange and peak efficiency. What do you think. Though I prefer to get a GTX.
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GTX2867R for sure. 0.64 if you want best spool, at sacrafice of 7000-7500 fall away. If you want vice versa, got 0.86 exh housing, which will spool slower, but not restrict top end.
Quote:
Originally Posted by DeBiase
And also about the higher heat from being out of the efficiency island does that only apply to the right of the efficiency island (over efficiency-island airflow) or does it apply to the left of the island as well (under efficiency-island airflow)?
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I'm not 100% to be honest on this theory. But it would only be to the right, not the left. Left of the island its not hot, its probably more to do with aerodynamics and that sort of jazz.