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HPI mufflers- meet Loto sound ordinance.

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Old 05-31-2005, 10:30 PM
  #11
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Default Re: HPI mufflers- meet Loto sound ordinance.

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Originally Posted by wiggler4490
so far they have been very good to work with and seem to have the newest technology to meet the criteria acceptable for legal sound, other than cmi;s new muffler than is an arm and a leg and requires the tailpipes to be sent off and your boat is down. the Hpi's are the only mufflers that have shown promise on big horsepower. they have shown no power loss and have been very cooperative to try to make a product that is legal at whatever costs.Have'nt found anyone else with the technology to produce anything close to legal. anybody else have any problems with hpi please let me know so I can address them with Dan. We are all working hard to tests these new products at loto. I dont think mercury would be involved with a company that is not competent.JC depending on which muffler you have there are a few items they are working on that can bring you legal. number is on their website. thanks jim

I have the transom mount 9060-PR
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Old 06-01-2005, 10:09 PM
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Default Re: HPI mufflers- meet Loto sound ordinance.

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Originally Posted by Troutly
My dealings with HPI were less than stellar.

I'LL second that for what I spent on mufflers with them I would like to have maybe a little serves
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Old 06-02-2005, 07:12 AM
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Default Re: HPI mufflers- meet Loto sound ordinance.

Gibson doesnt make switchables, ALL of their products are top notch, i have sold thier systems for trucks for 8 years and never had a problem. For clamp ons I would try them...Rob

http://www.gibsonperformance.com/marine.asp

Last edited by offshoredrillin; 06-02-2005 at 07:14 AM.
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Old 06-02-2005, 09:46 AM
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Default Re: HPI mufflers- meet Loto sound ordinance.

How much reduction in power is there with the HPI mufflers on the dyno tests?
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Old 06-02-2005, 09:30 PM
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Default Re: HPI mufflers- meet Loto sound ordinance.

The March 2005 Hot Boat Magazine has a test on these mufflers and others on HP 525 and 496 Mag engines.
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Old 06-02-2005, 09:41 PM
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Default Re: HPI mufflers- meet Loto sound ordinance.

Livorsi has the test results on thier web page
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Old 06-10-2005, 10:05 AM
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Default Re: HPI mufflers- meet Loto sound ordinance.

My HPIs on twin HP500 (stock) tested at 91.3 dbl... had to be under 91.5 to pass here in Chicago. I passed, but I had hoped the margin would be a little bet better.
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Old 06-10-2005, 11:26 AM
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Default Re: HPI mufflers- meet Loto sound ordinance.

I was at Lake Elsinore, Ca. yesterday. I met Bob Kelly from Performance Resources, LLC (out of Laguna Hills, CA.) He manufactures "Zoomers" exhaust mufflers. He said they just won the hotboat shootout when they tested a bunch of mufflers. Give him a call , he may be able to help you. His number is 714-791-7446 or [email protected]

Good luck,
Gerard
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Old 06-10-2005, 11:36 AM
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Default Re: HPI mufflers- meet Loto sound ordinance.

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Originally Posted by Semper Fi
He said they just won the hotboat shootout when they tested a bunch of mufflers. Give him a call , he may be able to help you. His number is 714-791-7446 or [email protected]

Good luck,
Gerard



Maybe he forgot to read it?

http://www.livorsi.com/catalog_pdf/hotboat.pdf

Maybe they did better on the bigger motor, those results aren't on the Livorsi site.
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Old 06-10-2005, 11:42 AM
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Default Re: HPI mufflers- meet Loto sound ordinance.

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Originally Posted by Von Bongo


Maybe he forgot to read it?

http://www.livorsi.com/catalog_pdf/hotboat.pdf

Maybe they did better on the bigger motor, those results aren't on the Livorsi site.
Looking at the link you posted on Livorsi website shows that the Zoomers are under the legal decibal max, and gave the baot the fastest mph speed. can't argue with that!! The Livorsi Marine mufflers actually slowed the boat down 1mph.

Last edited by Semper Fi; 06-10-2005 at 11:46 AM.
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