From looking at the Alienprobe's tuning info it's going to be a very interesting comparison between EVLNXR's hybrids, the N1, the FS4 & the Kelford 184C on Saturday. Presently the Kelfords are running last but I still have to sort the headers & exhaust. Fujis are not good for high RPM cams like the FS4 & Kelfords. If you were to look at the flow figures then it will either be the N1 or the Hybrid taking top honors... we'll see on the day though!