Not trying to discourage but just finding and buying a turbo is fitting the key in pandora's box. Once you start cutting and fitting you will have opened the box. Equipping a vehicle with a turbo the correct way to make it safe and reliable is a very expensive and time consuming endeavor.
Even running low boost not all OEM ECU will be able to compensate. It will depend on the engine and the capabilities of the ECU. Either way you will need at least a wideband, data logging software and software to retrieve, modify and upload tunes. You could invest in an aftermarket ECU like FAST or megasquirt which would make it easier to tune but you would have that additional cost.
I am not trying to beat you down... I have researched heavily in putting a turbo on my 4L Jeep engine.... I found out that there are a lot of hidden costs and problems that would have to be solved. After I added up the costs for the estimate...it was north of the $5,000 mark. For that kind of money I could do a 4bt engine swap and have more power and economy than a turbo 4L.
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