502 Mag MPI HP upgrade question

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01-12-2012, 03:09 PM

#21

brivander

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In case you need something sooner, there is this thread as well.

http://www.offshoreonly.com/forums/d...e-results.html

Good Luck!

01-12-2012, 07:16 PM

#22

ZXXX Donzi

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Labbed props don't do anything for non-step ZX's.

These guys are right, unless you pick up a bunch of HP, you will only create problems for 1-2 mph. Stay stock or really up the ante.

01-12-2012, 10:33 PM

#23

snapmorgan

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For a little over 10K I added 200hp to my 27footer and it picked up 9mph with a prop change. leave it alone and put the money in the fuel tank.

01-13-2012, 12:12 AM

#24

MCKILLOP

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Quote:

Originally Posted by snapmorgan

For a little over 10K I added 200hp to my 27footer and it picked up 9mph with a prop change. leave it alone and put the money in the fuel tank.

Best advice I've heard yet.

I appreciate the help. Probably should just enjoy the boat for what it is.

01-13-2012, 01:10 AM

#25

FIXX

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fixx

Quote:

Originally Posted by MCKILLOP

Thanks for the advice guys. I think I already knew the answer that question, but was hoping I might be wrong. I have decided to keep the EFI and save my money for a Procharger set up.
Thansk again for the advice, I really appreaite it.

that eould be the smartest thing to do! just ask jeremy aka fogducker...he picked up almost 20 mph with a engine refresh and the procharger... and that was on a 454 385 hp efi..

01-13-2012, 04:39 PM

#26

HaxbySpeed

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I'll trade you a MEFI 3 with the tune already in it for your Donzi poster. I already gave away the last couple ported intakes or I'd give you one of them too. I'll throw in the fuel pressure reg as well.