sigintel
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Edit*: Thats a 58/62 0.62 A/RAwesome information!
This is what I got from hellion
That part number is for Precision 5562 billet wheel ball bearing turbos
PN/SM
10504207129
it is NOT the 55/61( now called a 5531E)
Hmmm.
Some turbos have really large turbine to compressor size ratios to decrease size/cost/need for exhaust bypass/wastegate and blowoff valves.
Downside is they are exact opposite of what you are after. The 5531E (different sizing schema)was the only current precision unit I could find similar to your 55/62. *edit: you dont have this.
You have 58/62 previous gen.
Twin 58/62 would be aimed more at 1200-1400 hp drag strip runs.
You may want to try contacting precision as they dont provide any maps of compressor or turbine online.
I suspect a 55/58 0.8-0.55 AR may be way more fun. Consider 55/55-58.
You may need to spend more money on bypass(exhaust) and blowoff(intake) excess pressure control.
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