Hello everyone I hope not pull me tomatoes for the car in question, but I have the following problem on my machine:

for some time I feel "deflated" than before, but mostly he mutters to a minimum. He mumbles even when downshift and resume at low speed.

However, when the shooting and a bit like braking, and after that surpass the 90 for example you hear a slight snap as if he had suddenly opened something.

I state that on the machine I have already done the following work:

whole exchange

new throttle body

plug wires and spark plugs

lambda probe

Air Mass Sensor

cutting

Timing belt

My doubt is that there is a fault on the engine control unit.

If you want you can also take 3 or 4 hp more?

experts already happened to you is such a thing?

thanks in advance to all those who will be interested.