Having no luck finding any threads on these so im just gonna post up, if anyone has a link to an already existing thread please provide! First up, do any adjustments need to be made to the efi for an aftermarket exhaust? looking at the pc ti-4 gp if that matters. If so, how do i go about getting the correct adjustment specs? 2nd, The dt1 air filters, either the over the cage filter, or the aluminum cage with filter, the mxa write up on them only said tweaking the efi was needed when cutting the airbox open, but will anything need to be done to the efi with just the filter swap? Once again if so, how do i got about finding the adjustment needed to be made? Appreciate any help!