I recently bought a used 2008 XL1200C from a dealer. It came with Cycle Shack slip-ons and the salesman said a Stage 1 intake had been installed and the EFI remapped. If I leave the Stage 1 on and put the stock exhaust back on (I like quiet) do I need to get the EFI re-mapped again, if yes, could I just install a power commander? Am looking for the least expensive alternative. Thanks.