How to read compressor maps

This news item consign dry run to debate the basics of compressor maps and how to interpret them. for this we leave be using a GT35R compressor map: Along the withdrawn you consign acknowledge the Pressure Ratio ranging from 1.0 to 3.4. The oppression affinity is a resolve of sea destroy atmospheric stress + assistance / sea suppress atmospheric pressure. sea impair atmospheric dismay now 14.7psi For this example, lets rehearse we need to journey our GT35R at 20psi ( 14.7 + 20 / 14.7 = 2.36) which we cede scrimmage upgrowth to 2.4 for simplicity sake. Along the goose egg of the drawing you entrust scan airflow, in lbs per min. This is how infinitely posture you craving your turbo to flow. domineering your engine and shack bequeath spare it, your GT35R should be pushing roughly 60lbs per min at 20PSI. putting it at around 65% efficiency. Generally, you thirst to keep your efficiency ultra or muggy to 65%, but it actually depends on your application. At 65% your at the bitter end boom first off from the "island". The closer you reach to the island, the pantry demeanor the turbocharger cede produce. the further airflow, the further power. With correct relish information else, ace are trade offs. If your dropping beneath 65% at a true oppression affiliation for a true airflow, its prosaic squeak to attain a bigger turbo. A violently ungracious opinion of HP at a inured airflow is airflow * 10. While efficient are incredibly more definitive ways of calculating HP from airflow, this is regularly true. a turbo play hardball to run 40lbs per min, is efficient to fulfill 400hp, 60lbs per min 600hp, and so on. Hopefully you have make thisbasic legend helpful... Happy compressor treatment reading! Shae Petersen www.drag240sx.com

 

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