They can be built in 82mm, 85, 88, 91, but they will require the T6 housing for that, but we can build them to a T4 as well, if you really need a T4 housing. Downpipe's will vary in size depending on the housing choice. All units are CNC'ed and CMM checked.
As for the compressor maps, only some are available, but most are not for public viewing. Also the extended tip wheels are only certain units from certain manufactures. If you want the true BWA wheels then contact Dan at Bulls eye power.