Help finally have a grip on my problem

[GO240]

Ok so today i was driving back home and i noticed the longer i drove the less i could get on the gas. It went from only being able to rev to 4000 to barely getting passed 1000 so i'm massively confused because it goes away if i let the car sit a while and i'm not over heating at least i think not

[-RJ-]

Im thinking MAF

[GO240]

do they usually progress down hill like that then fix themselves though? and i also have my timing advanced

[-RJ-]

no clue lol, get a friend with a 240 and try his. im trying to do that now lol

[mechpro]

sounds like ur cat is clogged and begins to melt when it gets hot restricting ur flow check that

[moso]

fuel filter, the longer you run the car the more crap it picks up until its almost completely closed, the car sits, the crap in the filter settles out the bottom the car runs.