Speedo problems..... (sr20det redtop)

[sr20drft]

hey guys, well usually when i start my car up for the first while my speedo wont work, but the rest of my gauge cluster does. When the speedo isn't working, the car feels powerless, and when i blip the throttle to revmatch, it's not smooth like it is when the speedo is working.

anyone ever had this problem or the speedo not working, then randomly working and then not working again? back and forth it goes.....

[projectdriftS13]

my speedo didnt work all the time either but i never had a powerloss of anykind i also dont have a sr20 or anything close but i bought a new 240 just the shell and switched everything over and now it works fine i think the wiring harness was messed up you never know it may be the wiring harnesses or ur ecu any other questions just pm me