SL55/63/65/R230 AMG: Loss of HP and PSI in a 2007 SL55
I have a loss of felt 100 HP in my SL55 and found many scratches on the rotors of the supercharger. Is this loss of power and PSI caused by the scratches you can see in the pictures. Can anyone tell me his oppinion.
I believe the scratches are caused by not properly cleaning the supercharger after changement of the airpressuresensor. Because i can feel the HP loss since then.
Best regards!




like weistech or look up any supercharger mfg on the web




ineiuld recommend you writing down all issues that you noticed, what was done before, what you noticed after changes and what you have checked after. Have you checked plugs, pressure checked injectors, changed the CPS, upgraded Bosch pump etc? have you check compression on cylinders? If so what are the numbers? If you have all these details when you speak to one of the SC rebuild shops it can help pin down cause. I do have contact on shop that has done all my SC work snd they are great resource if you need it.
At 80k miles it should not be SC. My 0280 ran 150k miles in my CL before I upgraded to 0580. It had zero issues (knock on wood 😉

I am having an issue with my lower SC valve body that is creating stumbling issue under WOT but that is being addressed.
just my .02. Good luck
Mick
Last edited by AMG_55_cruiser; Jan 2, 2021 at 09:46 AM.
Everything was checked with the stardiagnosis. Kompression is ok , plugs coils cables are new, injectors and fuelpressure are ok, intake-air pressure and - temperature are ok
so there is really nothing just the scratches on the SC rotors.
or do you suspect something else?
Best regards!
Trending Topics
The Best of Mercedes & AMG


