Bmw 130i low power dyno result

[toreto]

Hello,

The car is a 130i 265cv 2007.

4 year ago i took It to the dyno and repro was done. The car put 276hp to the flywheel.

Lately i felt the engine a bit weak , the car runs and pulls to the top Rev fine and clean , iddles ok , everything normal just it feels with a bit less power like if the timming ignition id not correct.

I took It to the dyno and It puts 244hp yo the flywheel do It is clear under power.

The dyno os differet from the firts time but It is 32hp different to mutch for been releted yo the dyno.

The car now has 50000 km more and about 14 track days.

The only change i made is install a oil radiador like two mouth ago and because the car make a strange noise i put everything stock again and the noise disapear.


I have no faulty Codes with Carly tool.


Any idea where to start looking?

Can the vanos been wrong with no error Codes? Is posible.to test vanos with a tool?

Thank

[b1aze]

Plugs, coils and replace the intake filter would be my first steps if you haven’t done those recently/at all.

If you’re pulling to 7k, it’s unlikely the ESS.

[toreto]

https://ibb.co/m0CWxhF

The top power is at 6900rpm, usually this engine get Max power at 6.600rpm.

If you check the curve from 6000rpm is almost flat , typical dyno the power go Up till 6600rpm and them go down

This is the only think that i see no normal

[Thunderguts]

Failing DISA valve?

I'm not sure I even know all the reasons why the E82 will reduce power, but I would think most would throw a code. Also, if a sensor erroneously said the oil was overheating or the brakes were cooked, I would think it would reduce power by more than 30 hp.

[chris_flies]

I'd bet on 4 things:
-DISA valve leaking/failed
-VANOS solenoids dirty, but not bad enough to throw a code
-Bad injector
-Bad plugs