Cheers guys....Has fresh fuel... Little update... With the PCV connected the bike doesn't even catch with or without throttle. Tried with the supplied map, a map with zeroes all through 0% & 2% throttle and a map with all zeroes. Nothing but starter motor briefly turning things before just spinning like it thinks the bike has started. Without the PCV, bike starts with a little throttle but obviously won't run as it's now a 732. Bit of extra info... Relevant Mods are... 105mm bore cylinder 84.5 crank rally cam RallyRaid foam rally air filter SAS delete with resistor tekmo powerbomb header akrapovic exhaust PCV Autotune Quickshifter Anything that can be checked with a multimeter or TuneEcu has been quadruple checked. No Error codes Throttle body THAD and APAD both at 0.72v. All the fuel pump stuff is new with no kinks. Valves are spot on. I filmed myself building the engine so I know that's good. (Wish i'd filmed where the harness grounds) EVO2 FI & EP maps are loaded. Wiring harness completely checked, reinforced and rewrapped. All fuses are good. Awaiting a response from Dynojet..... Edit: after carrying out a series of tests related to whether the PCV was getting sufficient power (which it was), it is now on it's way back to Dynojet for testing.