Hi guys, Today i took my 95 ef into a mechanic to get the LPG system uninstalled. Everything was fine until i got 5 mins away from home and the engine begun to idle and drive very rough. The exhaust sounds like it is sputtering/coughing and it shakes more than normal when I put my foot down on the accelerator and more worse when going up hills, I was told by 3 other people that this may be a spark issue. Started the ignition, pulled off each spark plug lead one by one and all seems good and fine. Does anyone have ideas of what may be the issue?

Edit: once I got home I had a good look to see what sort of job the mechanic did.
1. They just cut the wire from the LPG switch from the positive of the battery
2. My throttle cable is loose as f**k
3 . Looks like they just cut out the old gas tank and duct tape the holes in the boot.

Would it have something to do with the computer in the car if they didn't uninstall the LPG system properly.

check the ecu harness. my ed had a little gas computer that was tapped into the o2 and coolant temp sensors. if they didn't remove yours, and return the connections to factory, it would explain the poor running.