1998 gu 4.5L auto TI gass issue

when i first bought the 4x4 it ran a dream on both gas and petrol no issues at all fanstastic injected gas system, untill my foot kicked a wire under the dash zapping out the gas ecu computer 900 bucks later and a new gas ecu i got gas back,

but its crap soon as you put the foot down it spitts and splatters then takes off all of a sudden scary at an intersection,

iv a new set of gas plugs and leads and still not any better, but runs a dream on petral, any ideas or a good place that good with gass in eastern sub of melb

cheers

matty

Depends on what gas system it is.
My is a stag system and there is only one guy that has the programme to tune it, he's in Dandenong I think.