jep3003,
why dun u try other mech for this troublueshooting? pls dun get me wrong. im not saying ur mech no good but sometimes there r something need 3rd parties to see it clear. shld u be in KL, try to visit some famous garage to check it out.
like my case, im going for emanage but i decided to let GTauto to do it. not that my mech dun do but i think GTauto will better job. mech is mech, friend is friend. afterall, we the owner r the one suffer. so if im the one having this map sensor problem and my current mech has tried and canot get it done, thn i will go and get someone else check it out. but this doesnt mean im not going to patronize my mech anymore just tat in this field, maybe there r some better guy to do it.
as for your case, i think its wise to check it out and find the ACTUAL problem instead of guessing this and that, thn add this and that which will only make ur setup even more complicated and harder to troublueshoot