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525 EFI Upgrade

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Old 04-28-2009, 06:12 PM
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Default 525 EFI Upgrade

Starting to get my ducks in order for the upgrade of my stock 525 EFI's, would like to get them up to the 625 HP mark and would like to see what ideas or combinations are out there to stay with non whipple stock EFI components. I have aquired a spair set of stock heads to get reworked and wanted to see what would be the best combination.
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Old 04-28-2009, 07:27 PM
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You need to call Tyler Crockett. He has two packages for the 525 that will get you more than 625hp with stock ECM, Merc Heads, Stock exhaust and intake. He is in Michigan too.

http://www.crockettmarineengines.com/index.html

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Old 04-28-2009, 08:16 PM
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why not have dustin whipple reflash the ecu's??
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Old 04-28-2009, 10:40 PM
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From one Laszlo to another. jo szerencset.
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Old 04-29-2009, 02:49 PM
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Koszonom szepen. Always good to meet another Hunky.

What is a whipple reflash ? is that a supercharger progam setting on a standard N/A motor ?

I just got a extra set of 525 heads to get port worked and go from there, will be next winters project since we are pulling the motors apart anyway, so might as well bump up the HP.

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Old 04-29-2009, 03:35 PM
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The Merc computer codes have been cracked. There are several ways now to bump the HP. I am told that they can be stretched to 700 HP without supercharging!
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Old 04-29-2009, 05:37 PM
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Are you talking with no mods ? what are the details.
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Old 04-29-2009, 06:04 PM
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Quote:
Originally Posted by pm203 View Post
The Merc computer codes have been cracked. There are several ways now to bump the HP. I am told that they can be stretched to 700 HP without supercharging!
Right, but only in Washington, North Carolina, and only good for 8 laps!
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Old 04-29-2009, 06:07 PM
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Wink The Truth Need not Hurt!

Sorry to rain on your party guys, but there seems to be a misconception in the performance boating community that there is all kinds of hidden horsepower to be unlocked with performance marine engines with simple ECM reflashes.
The truth is Mercury racing has programmed the HP525 to its best horsepower at its rated rpm whre it will live! Unless you go into the engine and start making changes to cubic inches, cams, heads and induction system you are not going to see magic horsepower with any ECM reflash, anybody who tells you such is blowing smoke up your bung hole!

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Old 04-29-2009, 06:52 PM
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Yes you are right. I am talking about a rebuild with the proper upgrades and computer reprograming.
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