I just installed a Walabros lift pump running 23psi. I replaced my batteries at the same time. Now I can be setting at a stop with my foot on the brake and I can feal a couple of lunges like it wants to take off or do a couple of them while accelerating. Why did I just notice it now. Help please.

 

Used to happen on my truck when the tranny was good. I don't think it's a problem, just an engine that wants to go. Press the brakes harder and it won't lunge.