13 custom, just had 10k service a week ago. Installed intake and flashed with powervision Thursday was running great Thursday evening and for an 80 mile ride Sat morning. After parked for a couple hours, installed a timer cover, visor, and swingarm axle cover, and fired her up to go ride, sounded normal, but I could feel a hard solid shuttering at idle and it became more harsh with a little acceleration so quickly back up driveway. No codes on Speedo or powervision, reloaded stock map, same symptoms. Engine mounts appear to be tight. Cleaned battery terminals, swapped relays. Could a sensor cause this without throwing a code?

 

Put another, would it make sense for a tune to regress!? Ran great for 100 miles then rough-not spuddering like bad gas, more like excessive vibration, motor mounst appear tight. Dropped it off at the dealer, worried that their first instinct will be to blame it on the tune.

 

Is Powervision a piggyback device? You mentioned reloading the stock program, but does that mean you've pulled the tuner altogether?

If you're back to stock, is it a dead cylinder or just "not right"? If it doesn't feel smooth an intake leak, poor fuel or a simple loose plug wire could do it...

You might also recheck whatever the dealer did and make sure oil level and all that are OK.

Luck with this.

 

No, the powervision is not a piggyback unit, it reflashed the ecm with a new map, but stores the original.

 

Any one else?