Port specs, IAME KA100 and Vortex RoK VLR
Comparison of the fiches for port timing on the KA and VLR. Looking at the exhaust timing and the width of the intake ports, I suspect they are going to behave differently out on the track, with the VLR overall being more moderate on exhaust port timing which shows as 169.5 deg for the KA100 vs (up to) 166deg on the VLR. For comparison, ICA motors were allowed up to 177deg.
But I am merely an internet commentator, and exhaust port timing is not everything by any stretch.
