I have a Cultus 2008 EFI. I'm facing an issue of hig RPM on both CNG and Petrol. Apart from being high the RPM does'nt also stay stable. I cleaned the throttle body, tuned up the car but all in vain. What can be the issue? I went to Suzuki Riaz Motors they said " Aap ki gari laptop pe check nae hosakti because some thing(i dont exactly remember the part's name) is missing from the car " Apparently a local mechanic must have taken it out just to make the car manual, by manual i mean to say tuning up the car without the help of laptop etc.
If some one can help me out in this regard it must be really very appreciated. Also i want to know which spark plugs will work best for my car. Currently the stock spark plugs are installed.