W211 AMG Discuss the W211 AMG's such as the E55 and the E63
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Bad IC pump - caught on film

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Old 08-31-2007, 02:17 PM
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Jason, I think you lost your IC pump.

To convert MAP to boost - (MAP-29.92)/2.

So in one run you hit 65 in. - (65-29.92)/2 = 17.5 psi. As soon as IAT start to go up, the boost is reduced as you can see from yellow line going down.
Old 08-31-2007, 02:21 PM
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Originally Posted by Vadim@GMGRacing
Jason, I think you lost your IC pump.

To convert MAP to boost - (MAP-29.92)/2.

So in one run you hit 65 in. - (65-29.92)/2 = 17.5 psi. As soon as IAT start to go up, the boost is reduced as you can see from yellow line going down.
I kinda thought that as it has been obviously lazy up top, but I just replaced it 7000 miles ago, the last time it went i thought i could really feel it, this time its tough to tell....
Old 08-31-2007, 02:25 PM
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Make sure it is properly bled. Under WOT AIT it should stabilize at around 140F.

Something is not right.
Old 08-31-2007, 02:37 PM
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2005 E 55
oops sorry thought the units were in kpa.
Old 08-31-2007, 02:39 PM
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Originally Posted by rflow306
oops sorry thought the units were in kpa.
u gave me 10 mintes of shear terror thinking my turbos werent making proper boost well I know which direction I have to go in now
Old 08-31-2007, 02:51 PM
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Originally Posted by E55JAY
u gave me 10 mintes of shear terror thinking my turbos werent making proper boost well I know which direction I have to go in now
It seemed low plus you still have to subtract atmosphere from my original conversion. so double
Vadim came to the rescue.

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