Hey Dazco , that is really useful to know , thanks. I have just put my original silencers back on for the MOT test in uk which starts at 3 years old. I was worried it would fail as the TOR silencers I had on were clearly marked FOR OFF ROAD USE ONLY. So I am getting ready to re-map back to standard long silencers and could not decide which Tunecu programme to download and use. ou have solved it for me , thanks again.
Having said all that , after I put the original silencers back on I went for a ride and could not feel any difference in power or any sign of running lean. Is it really neccessary to re-map every time you change the silencers? Am I risking damage to the engine?