I have a 2002 mazda protege5 auto. I checked the spcs and found that the p5 and the p speed was the same spcs so I put a turbo on it no internal upgrades no boost controller just a t3/t4 turbo and exhaust Im having probles making it run right im sure there is more thing to do. Do I have to upgrade my ecu or injectors what is the compression ratio between my car and the speed. I asked about getting it tuned they said I need a safc but with my car the map sensor dont always listen to the ecu so what is it that I have to do please help me thank you

 

Turbos are a bummer. They increase exhaust back pressure for starters, and their delivery curve is such that they only start to do things at the top end of the rev. range.
You have increased the air intake mass by the boost ratio, so the MAF will surely have to be adapted. A new program in the ECU is almost certainly needed too.
To get the best from a turbo, you really have to take advantage of what they do best, which is to augment torque at the high end of the rev. range, and that means you have to change the gear ratio(s).