Supercharging a 500 EFI
10-28-2005 | 09:57 PM
#21
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Joined: Mar 2001
Posts: 744
Likes: 3
From: MONTGOMERY,AL
Re: Supercharging a 500 EFI
Bryan,
I have had a Stage II Procharger on my boat for four years with no issues related to the Procharger, Procharger, whipple, vortech...all the kits are good but SETUP is the key! Get in touch with Mark Boos at Precision Marine, he is one of the most knowledgable people around.
I have had a Stage II Procharger on my boat for four years with no issues related to the Procharger, Procharger, whipple, vortech...all the kits are good but SETUP is the key! Get in touch with Mark Boos at Precision Marine, he is one of the most knowledgable people around.
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10-29-2005 | 08:49 AM
#23
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Joined: Mar 2003
Posts: 3,075
Likes: 80
From: Fort Worth, TX
Re: Supercharging a 500 EFI
Originally Posted by 800XCR
Not to rain on the N/A parade or anyones abilities, but keeping the 500 efi system in conjunction with E-top headers will NOT result in an easy 600-625 HP on pump fuel without supercharging it regardless of what you do to it.
I have seen a few of the so called dyno sheets showing it, but for some unknown reason, the boats never showed the benefit of a 100+ hp gain.
The intake won't support the airflow required to make that kind of hp without it being forced and the headers certainly won't. Especially with only 502/509 cubic inches. Call CMI and ask them.
Good Luck.
I have seen a few of the so called dyno sheets showing it, but for some unknown reason, the boats never showed the benefit of a 100+ hp gain.
The intake won't support the airflow required to make that kind of hp without it being forced and the headers certainly won't. Especially with only 502/509 cubic inches. Call CMI and ask them.
Good Luck.
10-29-2005 | 10:12 AM
#24
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Joined: Mar 2001
Posts: 744
Likes: 3
From: MONTGOMERY,AL
Re: Supercharging a 500 EFI
Originally Posted by Louisville Boater
Who did your installation? I am playing with the idea down here in Eufaula.
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10-29-2005 | 04:36 PM
#26
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Posts: 603
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Re: Supercharging a 500 EFI
Excal.....I'm not buying. However, I am willing to learn as most of us are. Please post engine specifics including head and cam info along with a dyno sheet with a/f ratios and egts. How much faster did the boat go when installed? Thanks and look forward to the education.
