Originally Posted by MILD THUNDER (Post 4541046)

You arent taking intake manifold air temperature readings are you smitty ? I noticed on non intercooled roots setup, with carbs, man, the intake air temp drops when the throttles are opened. At cruise speed in the boat, even at 0 boost, the temps are hotter than they are at wot and 8lbs of boost. Id imagine the fuel has to have a decent cooling effect on the air charge.

I guess if you saw say a 20 plus degree increase in intake air temperature, along with the decrease in power, it would kinda make sense. But if the temps were nearly identical, then id think something else was going on . It really be interesting to see how a carb would stack up against port efi when its mid august and the ambient is 90+ degrees.

At 4400rpm, where shes down 60ft lbs, what was the carb setup timing at 4400, vs the efi setup?

Originally Posted by MILD THUNDER (Post 4541046)

You arent taking intake manifold air temperature readings are you smitty ? I noticed on non intercooled roots setup, with carbs, man, the intake air temp drops when the throttles are opened. At cruise speed in the boat, even at 0 boost, the temps are hotter than they are at wot and 8lbs of boost. Id imagine the fuel has to have a decent cooling effect on the air charge.

I guess if you saw say a 20 plus degree increase in intake air temperature, along with the decrease in power, it would kinda make sense. But if the temps were nearly identical, then id think something else was going on . It really be interesting to see how a carb would stack up against port efi when its mid august and the ambient is 90+ degrees.

At 4400rpm, where shes down 60ft lbs, what was the carb setup timing at 4400, vs the efi setup?

Originally Posted by ezstriper (Post 4541084)

Smitty, I am not surprised at all by what you are seeing, I have have followed many intake/carb/EFI shootouts, one stands out as they did a LS one a while back, the carb setup had the most HP of all the ones tested, including several EFI's, again great work !!!!

Originally Posted by articfriends (Post 4541165)

What size tb was on the intake you sold to rob, i am going thru his outdrives soon and if it's smaller i may borrow it from him

Originally Posted by TooLateVTEC (Post 4541314)

Im pretty sure it was either 1000 or 1200. I know thats not that much help, im still looking online for the one we had.

Thanks again for doing all this. I feel like we need to setup a GoFundMe page for you to help pay for the gas at least!

Originally Posted by SB (Post 4541378)

156*F....what the hell ?

Originally Posted by TooLateVTEC (Post 4541314)

Im pretty sure it was either 1000 or 1200. I know thats not that much help, im still looking online for the one we had.

Thanks again for doing all this. I feel like we need to setup a GoFundMe page for you to help pay for the gas at least!