i just recently did a LS-V swap into my eg ls block and Gsr Head..my problem is that my p72 computer is only reving up to 7K..can the ecu be bad?

 

computer could be bad but so could a lot of other things. Vehicle speed sensor could be out and cluster could be reading wrong....my friends one time did the same thing and it was the vss. As for the computer open it up and see if anything is burnt or smells bad

 

im havin the same problem.....

 

is the check engine light on?

 

engine check light is not on...but i think your right about the VSS because my speedometer does tweak sumtimes like it would jump from 20mph-100mph constanly....