Fixed Pulley Review and Findings...
Senior Member
Joined: Jul 2010
Posts: 420
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2006 cls 55 amg
who's working on that tune ? only eurocharged .... what about the others ?? i ask OE and it looks like they have no problem giving me a tune for that 77mm fix pulley 
Last edited by sircl55amg; Aug 20, 2013 at 07:57 PM.
MBWorld Fanatic!
Joined: Oct 2012
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From: Canada
2004 E55 AMG
OE can no doubt give you the tune too but they'll also have to tweak it out a lot , like these guys are waiting on or maybe they can get it right the first time
only one way to find out 
Super Member
Joined: Nov 2012
Posts: 698
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From: Germany
C215 CL55 AMG, W124 500E, W210 E430, W124 300E
when you unplug your MAF the engines ECU goes into a "limp home mode" on every "modern" car in the world since the mid 90s.
Older cars, like with engines of M119, M104, etc, once the MAF fails or is unplugged, it uses the values of a vacuum-line at the intake mainfold, the (if equipped with EGAS) throttleflap position and fuel-trim values to have some "basic" engine running anyway. With good luck your car wont surge and you could hit RPMS as high as 4500RPM mostly.
Again, MAF failure leads not into a limp mode ike with the EGAS failures, when you have for instance a problem with your ETA/Throttlebody/sensors and you only have a limited back-up pedal way available.
Its rather that the car is then set by ECU into ignition timing and fuel injection duration/timing so you can get to the next shop.
Dunno i dont know how limp-mode is on the M113s. But i doubt much different.
When the The car wont run at all with the MAF plugged, its probably shot. Get a replacement from a good vendor (BOSCH!!!) ASAP and try again.
If its still not running, a tune should help.
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Thread Starter
Super Member
Joined: Nov 2006
Posts: 952
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From: NJ/Greece
2006 CLS55 & 2002 SL55 (R129) Silver Arrow
I don't know how well the 83 or 80mm tunes are doing, but the 77mm tune needs a lot of work.
I uploaded my original file and put my smaller SC pulley back on and the car is running flawlessly, so its gotta be the software.
I uploaded my original file and put my smaller SC pulley back on and the car is running flawlessly, so its gotta be the software.
Thread Starter
Super Member
Joined: Nov 2006
Posts: 952
Likes: 9
From: NJ/Greece
2006 CLS55 & 2002 SL55 (R129) Silver Arrow
MBWorld Fanatic!
Joined: Oct 2012
Posts: 1,242
Likes: 7
From: Canada
2004 E55 AMG
Super Member
Joined: Nov 2012
Posts: 698
Likes: 16
From: Germany
C215 CL55 AMG, W124 500E, W210 E430, W124 300E
Still, i dont get at all, why the IATs at idle and part-throttle are higher than with a clutched pulley? Shouldn't the bypass flap be pretty wide open during this conditions, avoiding boost and therefor IATs to rise?
Also since there is nowhere an update about the tune or some good review/positive experience about the fixed pulleys, i believe they have found that there is an issue to be solved.
I have decided to wait until next year, before i buy anyone of these.
MBWorld Fanatic!
Joined: Dec 2011
Posts: 4,066
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From: Folsom, CA
2005 E55 AMG
Most likely yes. Especially with stock or only minor improved IAT cooling.
Still, i dont get at all, why the IATs at idle and part-throttle are higher than with a clutched pulley? Shouldn't the bypass flap be pretty wide open during this conditions, avoiding boost and therefor IATs to rise?
Also since there is nowhere an update about the tune or some good review/positive experience about the fixed pulleys, i believe they have found that there is an issue to be solved.
I have decided to wait until next year, before i buy anyone of these.
Still, i dont get at all, why the IATs at idle and part-throttle are higher than with a clutched pulley? Shouldn't the bypass flap be pretty wide open during this conditions, avoiding boost and therefor IATs to rise?
Also since there is nowhere an update about the tune or some good review/positive experience about the fixed pulleys, i believe they have found that there is an issue to be solved.
I have decided to wait until next year, before i buy anyone of these.
Super Member
Joined: Nov 2011
Posts: 789
Likes: 14
2003 E55
My car seems to be running well. The tune looks solid but have been chasing a map sensor code... Driveability is aparently good and cruising IATs under 105 with 70-80 degree ambient. 130 on WOT passes with HE and split cooling. I will have a full update in a week and a half but mine seems to be doing well.
MBWorld Fanatic!
Joined: Jan 2011
Posts: 2,159
Likes: 160
2006 E55
My car seems to be running well. The tune looks solid but have been chasing a map sensor code... Driveability is aparently good and cruising IATs under 105 with 70-80 degree ambient. 130 on WOT passes with HE and split cooling. I will have a full update in a week and a half but mine seems to be doing well.
Generally, I am seeing ~70* cruising with ambient being ~65* (cooling mods in sig). With two or three WOT runs, temps get to mid 80ish and recover quickly down to mid/low 70s within a minute. I am very happy with the cooling and recovery, even with the clutch pulley upgrade. I am doing the BIP split cooling soon (and hopefully LAST cooling mod, to get that last few drops in IATs) and I am hoping to be at right at ambient or less, ideally, while cruising. For my purposes, I don't need to go any further as I am not a drag racer or do any long back to back pulls.
Case in point, last night my starting point was 68* for intake while ambient was roughly 65ish. I did a quick 20-80 pull through 2nd gear and intake went to 78*, ambient still 65ish. After maybe 40 secs, temps dropped to 68-69*. Another pull to 100, temps went to 77*, dropped again to 67-69* within 30-40 seconds. The recovery is just amazing.
I have yet to see temps reach even close to 100*, even with hard runs.
Having said that, this might all be due to the ambient temps not going over 75 in the last week or so. Car feels like a new animal already and we haven't hit winter yet!
Last edited by ArmoE55; Sep 18, 2013 at 09:36 AM.
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From: A to the Z (the state)
'06 E55
Your cooling seems on point. What are your cooling mods? Due to too many nice (but nearly-NWS and non-kid friendly sig pics), I have disabled sigs in my settings. Makes scrolling easier and loading on a slow connection easier, too.
MBWorld Fanatic!
Joined: Jan 2011
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2006 E55
I am ordering BIP's split cooling kit soon. That should be the last I'll need for cooling (for my purposes at least).
Only 'heat-adding' mod is the clutched upper blower pulley (84mm) - stock lower.
