The WiFi ESP8266 modifies my power values in Arduino monitor - arduino

Question

Here is a link to openenergy monitor where I got the current sensor, you can find the type CT3100.
I'm working on an energy monitor using an Arduino Uno. I'm already able to get values (which are correct) of total power in the Arduino monitor. I would like to send that data to a database using an ESP8266 WiFi module.
The problem that occurs is when I add ESP module to Arduino, the values of total power I get in the monitor are not correct anymore.
void setup(){
wifi.setBootMarker(F("Version:0.9.2.4]\r\n\r\nready"));
softser.begin(9600); // Soft serial connection to ESP8266
Serial.begin(9600);;
emon1.current(1, 55.6); // Current: input pin, calibration.
char buffer[50];
Serial.print(F("Hard reset..."));
if(!wifi.hardReset()) {
Serial.println(F("no response from module."));
for(;;);
}
Serial.println(F("OK."));
Serial.print(F("Soft reset..."));
if(!wifi.softReset()) {
Serial.println(F("no response from module."));
for(;;);
}
Serial.println(F("OK."));
Serial.print(F("Checking firmware version..."));
wifi.println(F("AT+GMR"));
if(wifi.readLine(buffer, sizeof(buffer))) {
Serial.println(buffer);
wifi.find(); // Discard the 'OK' that follows
} else {
Serial.println(F("error"));
}
Serial.print(F("Connecting to WiFi..."));
if(wifi.connectToAP(F(ESP_SSID), F(ESP_PASS))) {
Serial.print(F("OK\nChecking IP addr..."));
wifi.println(F("AT+CIFSR"));
if(wifi.readLine(buffer, sizeof(buffer))) {
Serial.println(buffer);
wifi.find(); // Discard the 'OK' that follows
}
}
}
void loop(){
Serial.print(F("Connecting to host..."));
if(wifi.connectTCP(F(HOST), PORT)) {
Serial.print(F("OK\nRequesting page..."));
double Irms = emon1.calcIrms(1480); //extract Irms into Variable
double power = Irms*208;
String data;
data+="{\"IdClient\":";
data+=Client_id;
data+=",\"Nom\":\"";
data+=Nom;
data+="\",\"Irms\":";
data+=Irms;
data+=",\"Power\":";
data+=power;
data+="}";
softser.print(data);
String Post="POST / HTTP/1.1\r\nHost: 13.81.244.50\r\nContent-Type:
application/json\r\nContent-Length:";
Post+=String(data.length());
Post+="\r\n\r\n";
Post+=data;
Post+="\r\n\r\n";
String Send = "AT+CIPSEND=";
Send+=String(Post.length());
wifi.println(Send);
if (wifi.find(F(">"))){
wifi.print(Post);
}
//Test
if(wifi.find(F("OK"), true)) {
Serial.println(F("found!"));
} else {
Serial.println(F("not found."));
}
wifi.closeTCP();
} else { // TCP connect failed
Serial.println(F("D'oh!"));
}
delay(1000);
}