My exhaust flanges started getting bad last month so I got them fixed the other day along with taking off the catalytic converter and adding a resonator. But anyway sometimes when I force the fuel to my 91 4x4 GMC 1/2 ton she hesitates to go and bucks then when I let got the fuel she is perfect. No codes show up just the loss of power. Anybody care to answer this one with opinions?
Darryl