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One thing I've learned about turbo's is that you shouldn't focus on what power they can make when maxxed out. You should focus on what turbo will push the most air and remain usable. A 60-1 can make up to 575 hp on a 1.8-2.2L 4 cylinder but in order to get it to push that much requires a lot of psi.
If you want say 500 crank hp out of your m103 you'll need a turbo that can push at least 47 lbs of air per minute at 5500rpm or more if you mess with the timing and move the power range over. Not only will you need a turbo that can push that much air, you will need a turbo that can do so without needing to create a ton of boost pressure. The bigger the turbo, the less psi it needs to create a certain amount of lbs per minute of air.
For example, for a 60-1 to push 47 lbs of air you need to run 16-19psi.
Last edited by Turbo E320; 01-20-2010 at 04:58 PM.
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