Yum yum.. My next MEX highway test will try to touch 210 on flat ground.. 
new spark plugs and air filter confirm can reach 200 ady.. 
I also not sure which is which leh.. I just asked a fella on lyn forum.. mfa_145 if im not mistaken..
This is what he reply me..

So basically there is so many versions around.. Who to believe leh? I forgot the setup kweng showed me in his shop last time. .He was explaining something bout exhaust gas colliding in the same collector using the 1-4,2-3 set-up.. But then since the firing sequence is 1-3-4-2 ( i got my facts wrong previously, i was quoting 1-4-2-3), there should be no clash in exhaust.. So seems allright also lah.. But this guy use 2 bullets..   
1,2,3 is compulsory, the rest are optional.. U shd tell them to do compulsory stuffs only.. Of cos there is no harm in doing the treatment treatment things lah, except for ur wallet.. Cos these SC their bread and butter is from servicing cars only.. So they will recommend those optional stuffs lah.. But overall their service was good and competent. Thats y i put it as a recommended SC... Some SC take ur car and trash it like going for drag race like that, do things unprofessionally, but they dont do the optional stuffs, where can recommend that for everyone then?
Damn.. Go down slope from karak highway i think can touch 240.. 
Not kena conned lah.. Its like asking the right thing.. Saying u dont want to other stuffs.. Like if u go to Giant to buy the promo on biskut for 9.90, at the same time they will tempt u to buy other stuffs too mah.. The promotion done is to bring u in to the premise first, so they got a chance to drain ur money..
In the first post there i got put up the link what.. What is the compulsory stuffs to be done for which service.. Segmented according to Auto or Manual and also campro iafm or no iafm.. Other than the things not on the list its optional.. If u dont do optional things it wont void the warranty..