Bro
My Satria is 10yrs old and hv this idling problem and sometimes whilst downshifting gear, RPM needle flactuates 500~1000RPM and the engine dies off.

Suspect the throttle body n sensor dirty. Would this TB Engine Conditioner help?

I am in KL, PM me pls on how many bottle i need to do clean up price, n would appreciate u help me DIY to do the spraying/cleaning up.

Thanks bro ..