Hi as above anyone done this and does it require a map again? I already have termis and wondered what difference it makes if anything? Dan
If you have the termi's fitted and the upmap installed then the valve is permanently open and the motor and cables should have been removed, the flap is still in the exhaust and can be removed if required, not sure you will notice any difference tho.
Easy job doesn’t make a great deal of difference if you search on the forum there should be a thread that I put on about removing the flapper valve