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merc 525 efi more horsepower

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Old 11-07-2006, 12:52 AM
  #11
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Default Re: merc 525 efi more horsepower

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does anyone have any ideas on how to get more horsepower out of 05 525efis without voiding warrantee
There doing a few tricks but it doesent do much,It will void it.

I would just Whipple it
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Old 11-07-2006, 09:36 AM
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Default Re: merc 525 efi more horsepower

Trade them for my 600sc's ya can make all the power ya want !!

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Old 11-07-2006, 01:13 PM
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Default Re: merc 525 efi more horsepower

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Trade them for my 600sc's ya can make all the power ya want !!

RHC
the old style?
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Old 11-07-2006, 01:23 PM
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Default Re: merc 525 efi more horsepower

I bought a brand new car and then added a turbo too it. Warranty never voided, the car was a lease put it back to stock no one suspected anything So boost it and be done with it. As long as its tune perfectly, you should be fine. Plus its bolt on too so you won't have to crack open the engine to install anything.
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Old 11-07-2006, 01:26 PM
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Default Re: merc 525 efi more horsepower

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Originally Posted by pkspx
I bought a brand new car and then added a turbo too it. Warranty never voided, the car was a lease put it back to stock no one suspected anything So boost it and be done with it. As long as its tune perfectly, you should be fine. Plus its bolt on too so you won't have to crack open the engine to install anything.

Wow.... From all the experts I spoke with... you're the only one who claims it's a "bolt on" and no internal mods are necessary (for the 525 EFI's).

Are you speaking in general, or do you have specific experience with these motors?
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Old 11-07-2006, 02:13 PM
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Default Re: merc 525 efi more horsepower

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the old style?
yes,, 1997 merc 600sc ,,, they are nice engines,, just need to adjust the carbs as the weather changes
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Old 11-07-2006, 02:15 PM
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Default Re: merc 525 efi more horsepower

Key word there is CAR,,,, a boat is a little harder on engines than a car is

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Old 11-08-2006, 09:49 AM
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Default Re: merc 525 efi more horsepower

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Originally Posted by Joe
Wow.... From all the experts I spoke with... you're the only one who claims it's a "bolt on" and no internal mods are necessary (for the 525 EFI's).

Are you speaking in general, or do you have specific experience with these motors?
I am no expert. From my experience, dropping in a turbocharger on a car was bolt on and more power for the buck. I didnt want to crack open the engine and void the warranty because it was a lease car and I knew I wanted to give it back. In general, I would think a bolt on supercharger kit might be something well looking into. I have no idea if there are actually any bolt on kits for your 525, but I again, I would have to assume so. I might be wrong, maybe the compression ratio is too high, and boosting it would mean rebuilding it for boost. I do know that thare are bolt on kits for the 454 and 502s.

I found some info for you.
http://www.whipplesuperchargers.com/...sp?ProdID=1180
From www.wipplesuperchargers.com
Quote:
TAGES 1 & 2 NOW AVAILABLE
Whipple’s Superior Performance:
Want big top end speed, dramatically improved cruising speeds and ability to plane faster? How about not having to sacrifice reliability, durability and idle? What about ultimate bragging rights to owning one of the most incredible looking and technologically advanced marine engines? Sound to good to be true? Well its not, Whipple has the supercharger system for you. The Whipple 525HP EFI SC System will give you all the torque and horsepower your heart desires. With 7lbs. of intercooled boost, your power will increase nearly 50%! Skeptics say, “what about idle?” That’s simple, the Whipple twin-screw type supercharger and ECU calibration will allow for your engine to idle consistently, in and out of gear for easy operation.
Sure does look sexi though





IMO - Honestly, if I didnt want to void my warrnaty, I would supercharge it. Just got to make sure it is tune perfectly with air/fuel and timing and it will be just as reliable as stock. I have seen people boost their cars and screw something little up and cost them an engine. Reliablity can also dpened on installation as well. It just not a quick bolt on kit like a header kit.

Last edited by pkspx; 11-08-2006 at 10:07 AM.
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Old 11-08-2006, 10:00 AM
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Default Re: merc 525 efi more horsepower

Ask Docmanrich37 if his 525EFI Whipple installation was "bolt-on and go."
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Old 11-08-2006, 06:40 PM
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Default Re: merc 525 efi more horsepower

And don't spend all your money on the blower, you need to hold some back for the new drives you will need.
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