Hello
I have xm turbo 2.0 ct just bought it last week.
the only problem i found is a rev cut on 4000 rpm.
when i m acclerating over 4000 it's feels like rev limter cutting the fuel
the car is with full tank of fuel and there is no warrning light.
thank you for your help

ECU in cripple mode?

Injection pump poorly?

Partially blocked fuel line or dirty fuel filter?

thank you,
i will change the filter and then chake the turbo
how do i rest the ecu?