Basically there are no good or bad service centre. There's only good or bad customer relationship. You and I know, service center all business under the same roof, need to pay royalty to Plotong. Pirce are fixed by the principal also, do more or do less also same. Customer walk in volume all determined by recent 3 years sales in that area. If that area sale drop, meaning that SC service routine also will drop(make sense right? no new car, who will go back service?) So basically whichever SC you go, their procedure will be similar, the acting faces also look alike. My advice to you is:
1) Find a decent service engineer/magician, get gam qing with him/her.
2) Everytime go back to that workshop, specially appoint that magician to work on your car.
3) Despite Plotong SC made it clear, customer not allowed to step in working area, u die die go buy goreng pisang go in & bribe your magician. If got enough goreng pisang, go bribe together the pretty cashier kakak.
4) When you get a chance, go ask your magician. Use car noob sohem tone to ask: I heard hor, my fren got go reflash ECU to new firmware hor, then in morning the kar no more jerk jerk jerk liao wor. Eih mai kar can do anot har?
5) Can ar? Whoah! Geng lor. I wanna watch u do can ar? Now use firmware version huat ar? Owh... The new version is huat version ar? Owh.... Where to see firmware version wan har? Here ar? Tengkiu wor. Eih nextaim I bai u cikenrais lunch har. Bai bai.
These are the standard routine lar. If you don't practice it, rest assured you're getting "regular" treatment for any "regular" customer that oftenly change SC. We've got very reputable SC customer Mr.
Razus Chia, 1 week visit SC 6 times. Eat SC karipap oso eat until SC know his feis ady

Now that's what we called "special" customer. Die die must go back. Wanna change what part also that SC give him priority

Letiu know when ayam ready for the next dyno run.
Every time dyno YB, manyak duit.