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Go Back   E46Fanatics > Tuning & Tech > Forced Induction Forum

Forced Induction Forum
Discuss supercharging, turbocharging and even nitrous and water injection here.

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Old 09-24-2006, 01:27 PM   #1
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Join Date: Nov 2003
Location: California
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My Ride: Blk 2000 328i 5speed
What determins max HP

What is the maximum horsepower a super charger can produce with 328? On the Active Autowerke's
Web site it list 257 rear wheel horsepower at 8 psi. Can the psi be increased to increase the horsepower? For example, they list the 330 at 277hp@ 8psi. Can a 328ís psi be increased to match the hp of the 330?
What is the limiting factor in determining hp on a stock engine?

Engine size

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Old 09-24-2006, 02:23 PM   #2
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You can raise the boost, but there is no software for anything higher than 10.5 psi I believe.. And going much higher would require you to lower the compression via pistions. You could raise the boost and then do a ported cylinder head, headers, full exhaust, and some cams and you would be well over a 330ci w/ just supercharger.
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Old 09-24-2006, 03:16 PM   #3
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My Ride: 2008 350z 6-speed!!!
I dont want to sound mean, but "There is no replacment for displacment". You can boost all you like, but how much can that block and motor take is the question. Good luck with everythin.
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Old 09-25-2006, 12:02 AM   #4
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My Ride: Blk 2000 328i 5speed
Thanks for the info. After doing some research, I found that a 328 could produce in excess of 300 rwhp.

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