My first question is about the ECU
I thought my knock sensor was dead so I was was checking for codes but I not nothing... Does that mean my knock sensor is ok? If so what could be the problem to my slow acce after initial pickup?

Second question is about the fuel filter.
I took out fuse #32 and cranked the engine couple of times to depressure the lines. I then tired several times to remove the tubes connected to the filter but no luck.. Am i doing something worng? Is there any additional steps i can do to make this process easier? Thanks

 

any1.............?

 

Dirty TB? It could be injectors sticking. Try runing some Chevron with Techron Fuel System Cleaner to see if that helps

Crank it a few more times and pull