Installed the same thing only in Dobeck TFI label. Also an 04, DL1K . Other mods performed at the same time include leo-vince SBK exh. slipons, K&N air filter, dropped 1 tooth on counter sproket, and a TRE. No more stumbbling/stalling. Tachs out much much sooner. I now have a very usable 6th gear. Fuel use so far, best 40 mpg. over all milage is less due to the WOW factor,although my best , before mods was 42mpg. I too stayed as close to recommended settings as I could get it. With silencers installed it has good sound and not too loud. Main reason for mods was to cure the low Revs burp/stall, have a 6th gear I could use ,and accelleration, mission accomplished!