Comptech s/c puts 285 to the wheel. The Ultimate Racing turbo kit puts 294 to the wheel and comes with higher flow rate injectors and a preprogrammed GReddy eManage fuel computer plus a fuel pump. The Comptech s/c comes with a rising rate FMU and fuel pump and a little electric thing to keep the ECU from throwing a CEL. Oh and the Comptech s/c is not intercooled while the U.R. turbo kit is.

So let's see...more power, better engine management, and an intercooler. Easy choice there.