New: FSP Pulley Review with EC Tune 2.0 (Jerry/Brooke/Shardul)




I didn't even get a bigger crank pulley cuz I was too paranoid lol, that "what if" and I make long trips and sometimes in remote parts of the country and
don't want the car to do something unwanted.
I really wanted to get the 77mm cuz I have all the cooling -Big HE, Bosch but keeping an eye on IAT's or logging all the time is out of my realm of
expertise. I rarely drive fast and never dragged so for that I just got a Clutch pulley long time ago.
The way I drive (civilized, normal, cruise control on most of the time) I don't need logging but everyone has said that it's a "good idea" lol
IMO best mods for this car , for people like me are Tune, H/E, Bosch, Clutch upper pulley and headers. Correct me if I am wrong?
I was doing some 250kph Autobahn WOT pulls yesterday at a ambient temperature of 64F (18°C).
Before my first pull, IAT was at 21°C (70F), WOT pull from 100kph to 250kph and IAT reached 51°C (124F), but was going down to 25°C (77F) after around a minute, after i stepped away from the pedal.
After two more pulls to the same Speed, IAT reached already 60°C (140F) and was going down much much slower (within 2-3 minutes) then and stayed at 30°C (86F) and never got lower, even as i was cruising some kilometers afterwards.
This is a stock car (CL 55 AMG with 500HP (DIN) rating) and im shocked by the IAT already at this very low ambient temperature. I should really have done some logging during hot Summer days, but so far the SC was never shut down during my WOT Autobahn pulls.
Now how much higher would it get with a 77mm FSP ?
What is a critical IAT? At what IAT does the ECU normally shut down the SC?
I was doing some 250kph Autobahn WOT pulls yesterday at a ambient temperature of 64F (18°C).
Before my first pull, IAT was at 21°C (70F), WOT pull from 100kph to 250kph and IAT reached 51°C (124F), but was going down to 25°C (77F) after around a minute, after i stepped away from the pedal.
After two more pulls to the same Speed, IAT reached already 60°C (140F) and was going down much much slower (within 2-3 minutes) then and stayed at 30°C (86F) and never got lower, even as i was cruising some kilometers afterwards.
This is a stock car (CL 55 AMG with 500HP (DIN) rating) and im shocked by the IAT already at this very low ambient temperature. I should really have done some logging during hot Summer days, but so far the SC was never shut down during my WOT Autobahn pulls.
Now how much higher would it get with a 77mm FSP ?
What is a critical IAT? At what IAT does the ECU normally shut down the SC?
The blower won't shut off until outrageously high temps, closer to 200*F.
When you say stock car, you don't have any cooling upgrades at all? Stock IC pump?
When you say stock car, you don't have any cooling upgrades at all? Stock IC pump?
Thanks.
Yes i have no cooling mods whatsoever. Completely Stock. As far as i could see, there is even the improved Bosch 010 pump missing...

So its really stock.

But i think she developed a heat issue anyway, because currently at sub-20°C (68F) ambient temperatures, the electrical coolant fan is as often activated as it was in hot summer days with 33°C (91F) or above.
Same goes for the coolant temperatures according to the dash. Hits close to 100°C almost anytime after shes warm. Time for some maintenance there.
The Best of Mercedes & AMG
I would love to remove my smaller clutched s/c pulley out and reinstall my 77FSP just to at least get the really bad s/c engagement fixed..there is almost a full 1-2 sec delay when the s/c kicks in and makes me hate to drive the car as a DD
There is no working box tune by any tuner right now. Supposedly a dyno tune will work, but also not in all cases. Nobody knows why.
https://mbworld.org/forums/w211-amg/...ggestions.html
Here i opened a survey:
https://mbworld.org/forums/w211-amg/...ms-survey.html






