Indeed my caped friend.
And no amount of total overhaul is ever to going to restore something that was not there before all those parts got worn out.
ECM is mapped for an 'easy' 500hp. It is exactly what they were sold as not quoted low on BHP.
But for Ed's benefit the ECM gets a bit worn out (loses it's electrickery) after 300 hrs and should be sent to me for recharging at a very cheap rate.
Also if you have a cigarette lighter facility on the boat, for just 99.99 i can let you have a device that will ensure an additional 50hp whilst burning half as much fuel and an exhaust that surpasses even one of Tinkerbell's bottom burps for cleanliness.