High pitch sound and Final solution, a new has just reborn

[toofeu]

Hey Mates,

Through lots of topics, we discussed the problem of the weird sound coming from the rear of the 35i engine, and the fuel pump issue.

Well I faced this problem.
Starting after 3000 km, a noise started from the rear from the passenger side, after driving few kilometers.
From the start I was disappointed about the engine.
I felt it sluggish and it was taking too long for the engine to reach high level. (above 4000 rpm)
I read lots of documentations and discussions about the problem, and I came to see my dealer.
Well after a long talk,some threats and a week at the dealer's garage later, I collected my Z4.

It's amazing, it is not the car that I knew before!!

Of course the sound disappeared, but that's not all !

The engine is wild, speedy, making the sound of a real sport car, now it's roaring!
The pussy cat became a wild tiger

The response when I press the accelerator is now fantastic, and the car just jumps ahead like a starving Lion on its prey, me when I see a cute Poupée in the street

They changed the fuel pump that was defective, as well as the fuel filter.

They reprogrammed the car thoroughly and now I really can feel the 306 horses under the hood, and they are all real pure mustangs :

So guys if you face the same issue, go back to your dealer and fix it, I think that they have now the proper fuel pump.
It's time to enjoy the car for real

[Memphis1]

maybe the flashed the ECU and gave you 340hp by accident...