various engine types. some may prefer their favorite cars.. try to build em like theirs and race em haha..
being able to take cams,exhaust,computer read outs..configurations..fuel mappings.. a dyno test..

a dyno test could also be a very simple tool to get gear ratios right.

something else to turn your little 4banger hybrid, into a car that will run the straights with an indy car.. if you set things up correctly xD

my lfs does not connect either? have there been any updates? no fire wall is on etc..