hey mate i have an issue similar to this,
i have same car, car runs fine in neutral and revs to about 5K than mild backfire, it was in a dudes yard for ages but ran fine got it nearly home and it started loosing power really bad!
now it does not have any power when in gear to move a meter forward or a meter back. it just looses revs and stalls when clutch is released, umm its pretty stock just a pod filter,
i ran 10 liters of high octane with injector cleaning fluid and it has not helped i thought it was possibly clogged injectors this did not work, i need help aye im pretty shit with cars
any help would be great!!
Cheers man.