Terry....the problem with approaching the dealers is that they will only fit the approved Aero Racing throttle body kit. There seems to be nothing out there for the 4/4 Sigma engine apart from exhaust systems and ITG/KN filters although RPM up in Perth do a revised filter and intake. It is frustrating as Caterhams use the same engine and there is plenty of tuning available for them but I'm told that the ECU interface with the Morgan is a problem unless using stuff specifically programmed for the Morgan. The kit from Aero Racing is expensive but the price is going to come down with the new development by Omex and the kit does also include revised plumbing for the engine, loom and a complete new throttle pedal assembly as it switches from drive by wire to cable. As soon as I get mine done i'll do a comprehensive report with dyno charts.
