I am currently building a Mitsubishi colt, which is also supposed to sniff some racing air. unfortunately only have the motorsport manual from 2004 to the hand… in group F the vehicle would fit in – but that has been replaced by the 2005 (right?) and here the restrictions on the intake tract are too high. the engine (4g93, homologated for group F) breathes over a single throttle system… the group FS would be a solution, since the vehicle would still be used for road traffic the F/F-2005 will be performed as a condition to comply with the regulations of the StVZO, so it would not be a giant theatre for the respective examiner to have the vehicle removed with the regulations-compliant changes in order to drive thus in road traffic to events. since the engine is homologated for the group F3, then possibly the regulations of the group F?? or if someone had nen tip in which other group the vehicle should be removed could be taken? wanted to start occasionally at round-track events, only that is why group FS would not be possible (only slalom and mountain races). edit: so, after some further searches in the net I now know that I could probably only come to group H with the modifications on the engine or the mixing preparation. seems to be the only solution :/ to refit the motor to series intake manifolds would be stupid – the 45mm throttle valve would have to be 1926ccm hub at b is to supply 9500rpm … if someone still has a tip which regulations I could look at – always bring it!