I currently have Gil exhaust and remapped ecus. Boat ran a best of 77.5 light on fuel, cold weather and removed hatch. It would normally run around 74 with an occasional 75/76 gps. I would like to be able to touch 80. Where should I start? Are my intakes worth it or should I grab 500 efi's and a cam? Thanks.

Put on a couple Pro chargers and call it good. well over 500 hp and well over 80 mph.....

This is one of the most popular asked questions here. Contact http://www.marinekineticsonline.com/ talk to Bob and you will be there N/A with the correct parts, tried and true HP

Before you spend a lot of money check into a package from Vortec that has new air cleaners,Vortec/MSD marine ignition amplifier.a Maxflow fuel optimizer and reprogramed ecu's.
The optimizer allows adjustment and fine tuning of the 502 mpi .Speed increases of 2-five mph have been documented ---- think that wiil get you to 80. good luck !


Jim

WWW.vortechmarine.com/products_02.php
Bolt on 25-35 more horse power

+1..expect to see over 90 mph..

Want 500hp out of 502 mpi.

Start by spending some of that 1/2 million dollars you won
from "The Donger" by taking the boat to Eddie Young.

Want to do the upgrade yourself? Get a Crockett kit.
http://www.crockettmarineengines.com/products.html

You could also try to copy the above recipe.

Here's a couple simple versions

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

Thanks, trying to stay NA for now since I'm running stock B1's. I have a set of cams I was going to run by RM since they were built by him for a carbed motor. Just wondering how they would run on an MPI.

As for money from LDD... Yeah, would be nice to see a cent of that.