Originally Posted by Aidan

Hi,

In Ireland, I repair ECU's. By fooling the ECU, which is what tuning boxes do, the ECU's EPROM chip can get glitched. - This is when it fires up CEL lamps and can often go into limp mode.

How do I fix it? Remove tuning box and throw it in the bin. Remove ECU, remove EPROM chip and reflash it with either its original file map or if the customer wanted a tuned file map.

I have been doing this for years in Ireland so I would be pretty shocked to hear that nobody on here has ever had problems with tuning boxes