I am not even using the MLS...just the standard felpro. The map I have is based off the AZSM map and would work great on your setup and I only paid $200 for it...pm me for the details. You can buy the pulleys from CP for $80 each I think. Also bought the 120 stats thru them i think. I would have a rough time paying for the AZSM kit as the ignition is not necessary...the stocker will support 800+hp. I am still using that map on mine even with all the boost...just turned up the fuel pressure. The stock fuel lift pump is garbage but I have been living with it...if you can upgrade that do it. Nothing wrong with the cool fuel high pressure electric pump tho.

If your blowers are off see if the rotors have touched each other.

PM sent.

I think you did the CP adjustable fuel regulator add on right? That is on the list as well, my stock regs are inconsistent at idle for some reason, sometimes pressure gets as high as 40 psi.

Blowers look great inside, only 60 hrs tho, no chips and they spin clean. Front seal is leaking a little on both.

I had a failure on one the stock lift pumps this year, both have been replaced. I considered the aero conversion, but I have my fuel system working great now. Even have a spare electric because of a mis diagnose with with help of Merc Racing tech support


No MLS gasket huh? Now I am confused. I thought that was the problem with the stock gaskets?

I am concerned that my intakes may look like the thermo housings, shot.

Even the sandard felpro is a huge upgrade from the stock gaskets. The mls is a better choice. At only 5 or 6 psi either should work tho. I change the oil on the lift pump every year now. Made a disaster out of my bilge when the lift pump went. As long as the motors are out, pull the mechanical pumps off and have the bottom drilled and tapped for a brass drain plug so you can drain them on the motor.

I had my engines overhauled two years ago. Left them stock except for adding Whipple low profile intercoolers and ECM reprograms, money well spent. My goal was to improve the longevity of boosted engines but also got the benefits (mentioned by others previously) of improved low speed 'drivability'.
This winter I'm upgrading to Whipple's blowers...

Update

FYI These engines had 3.5 and 3.7 hrs on them up until this season. They now have 61 and 62 hrs. They sat with the boat for 8 years.

Engines did great on compression and leak down tests. Builder torn the top end down. Stock HGs looked great (go figure) pistons, valves, heads all checked out great.

A few areas of concern. The builder said I had a few weak valve springs because a few of the valves were spinning in the heads. This was shown by because there wasn't a wear line on the end of the valve stem. 4 of the valves on each engine, me thinks these valves were the ones partial compressed for the 8 years that is sat still.

One of the lifters was just starting to lose a little metal off the edges, and left marks on the cam......so we are going full roller. Its really not bad at all, buy why take chances. Mark at pmefi.com hooked me up his custom grind cam.

What I am a little upset about is salt water issues. I was told that these engines had never seen salt, and the engines were stored with the cooling system empty. I am calling bs on that.

The thermostat housing on the port side is shot, very expensive and hard to find. I was trying to re-engineer the cooling system but that becomes complicated and expensive as well.

Both intakes have issues with the front water ports. The capped back ones are fine. Missing some metal here, I am going to see a welder tonight because replacing these intakes seems near impossible.

I really would like to just replace the intakes and thermostat housing with something else, any ideas?

This is the worst port, the others are half of this. I have used fresh water only. Would have to assume these engines sat with salt in them?

4bus,a good tig welder cam repair that manifold,it is amazing the damage salt water can cause,good luck with your project,you have a really nice boat.

Doesn't seem very nice right now

Thanks Mike