sub9lulu

iTrader: (7)

kinda long
ok
let you guys know more about my car
i got it not too long ago, the previous owner said it had a brand new rebuilt motor in it and it hasnt been break in yet.
back then it wont idle, after my friend tune it a little bit, it idles fine @ 900, but if i hold down the gas pedal at a certain level not speeding up, it jumps alot @ 1st, 2nd and 3rd gear, 4th and 5th is just fine.
this morning i was driving it, it was fine, on the afternoon, it couldnt pass 4000 rpm in all gears, a bit after that, it just wont pass 2000, after i stopped for a few red lights, it wouldnt even pass 1500. and theres some weird "pop pop" noise from my exhaust, i was like "****"
but when i am in netural, i can rev up, up to 6000 with no prob, i didnt want to try rev higher than that though.
i called my friend up he said its the air fuel mix got problem, but he didnt looked at it yet. i want to know are there other possibilities, and how to cure.
thanks