hey there...my ef is dual fuel an when switch it over to gas after a few mins of driving on petty it slows dramatically and when i try to accelerate it makes wierd backfiring noises. i dont know what it could be but it is a new system so i am still ironing out the bugs... any help or ideas would be appreciated.
cheers

sounds like it is duel fueling mate. go back to instaler should be able to change it

could also be backfiring through the intake, then its just a quick fiddle. if its a new system, take it to the boys what did the install.