I need to know of a GOOD place that does computerized electronic tuning for Mini Pajeros etc, in Karachi (Clifton / Defence / Saddar proximity).

I need to get a 2000 model Mini Paj tuned, it was earlier on CNG but that has been taken out & I intend to keep it on petrol.

I have heard mixed views on Khan Motors and Top Gear. Any suggestions and costs are welcome.