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Hp500 improvements

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Old 01-19-2005, 12:17 AM
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Default Hp500 improvements

I have a 2002 Donzi 33 zx with a pair of Hp500 Efi's,... looking to maybe putting whipple superchargers on them,... what else can be done to them if you dont want to spend the $$$ for the whipple's????? any ideas??

thanks

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Old 01-19-2005, 12:39 AM
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Default Re: Hp500 improvements

Thow out your GPS speedo, and install a pitot tube speedo. You will go at least 10mph faster.
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Old 01-19-2005, 02:06 AM
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Default Re: Hp500 improvements

How many hours on your motors now?

I just went thru the same thing .The Whipple will cost a little more in the end . Some I have seen did the 540ci kit and some even change to alum heads .I think there only getting 600-630hp

ck out my engine thread .I am in the middle of it now.

http://www.offshoreonly.com/forums/s...0&page=1&pp=40

You can do a search on 500efi and there are some other threads on build up also.
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