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ccroke13 07-07-2025 06:50 PM

ECU Tuning
 
I was throwing the idea around of having my ECU tuned. It’s a stock Mercruiser 7.4 mpi with a Bravo 3 drive. Engine runs great and is propped correctly. Question is, is it worth it? I was going to send it to Hardin. They say adds 15hp.

Padraig 07-07-2025 07:00 PM

Sorry to say ...but you not even notice 15 HP.

Padraig

Trash 07-07-2025 10:10 PM

You will notice no performance gains but will have a lighter wallet.

Griff 07-08-2025 12:34 AM

15hp = maybe a 1 mph gain at WOT
Better off to get your props labbed

SB 07-08-2025 03:01 AM

You can then say what the kids at my work say. It’s ‘Tuned.’ :) lol

Rookie 07-08-2025 10:32 AM


Originally Posted by Griff (Post 4929870)
Better off to get your props labbed

I don't know about that. It's a lot of hassle and money for a big maybe in payoff. I've only been fortunate to have 1 set of labbed props deliver what was promised. And it was just a tune on them. Most over promise and under deliver. I believe it's never a net win for the customer unless it's a specific application i.e. racing. I have 9 sets on the shelf in all different configuration currently.
Controversial I know...
JMO


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