Lost of power

Hi everyone I’m new in this group so first thanks for the accept.
So I just put 35’s tires on 20’s wheels and I feel that the truck has lost power so I would like to know what should I do first.
I have read that some people change de gears others used the bully dog
So in your experience what should I do first.

 

regear then tune. always better to mechanically enhance your rigs performance first IMO.

 

Gotta pay to play. Either re gear to a taller gear, like a 4.88 and a tune. You’ve added a taller tire with a lot of additional rotational mass. Your engine requires a lot more power to get those tires moving to get to the same speed you’re used too. So it’s not in your head. You have decreased your engines potential.

 

The ecu sees a lower wheel speed in relation to the mass air meter volume and throttle position.

This relationship is very important as it is the main measurement of load on the engine.

By artificially lowering the value for wheel speed your ecu sees what it thinks is mkre load.

More load makes the ecu pull timing and add fuel. This loses Hp. I’ve dyno tested several trucks to confirm this. You lose 40 hp not due to the tires, but the new tune the truck figured out for itself.

Shorter gears correct this. You also get better fuel economy.

Give a call for more details. And to get pricing on some new gears.

Keith 760-877-4234

 

thanks to all