it will make a lot of difference.. right now if you dont have oxygen sensor that means the engine is not geting any data of what is coming out of the exhaust. how can it adjust the air or fuel ratio. you have to put the Oxygen sensor to properly let the ECU set the Ratio. i mean its really important.
as far as the mechanics are concerned in lahore, their are few but the problem is time. mostly people here doing such work have more projects on their hands than they can handle. which eventually delays every one and you just keep going and coming to the workshop.
aap workshop k chaker he lagatay rehtay ho, aur kaam bohat he slow hota hey. isliye i prefer doing it my self. but if you still want to know then i would say k check REDLINE guy, go to him or talk to him on phone, he is well into 3sge or 3sgte. he knows these engines pretty well top to bottom. but before you hand over the car to him. decide everything prior to initiation.
- total scope of work.
- time of project.
- cost of project.
time being the main thing.