Okay need a lil help here, This morning while driving to work I notice my DSC light comes on and my Tachometer needle starts to flick (shoot up to whatever rpm I'm @ then drop down) Also my mph goes on & off. Any suggestions on whats wrong? Sounds like my Tach needs to be calibrated, and if so can I do that myself or do I have to take it to a shop? TIA

Derek

 

try resetting the cars computer.

https://www.rx8club.com/series-i-aftermarket-performance-modifications-23/resetting-computer-139309/

 

What off set are you running and what tire size(s)?