low boost
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2005 e55 AMG
low boost
Always had at least 2 lb's lower boost than what been advertised with most combinations.Was running a Kleeman 168 lower and 77 upper and made 15lb's of boost.Now I have a 84 upper and make 12.5 lbs of boost and a very noticeable low/low mid loss in power but.....lower IAT numbers but the ecu isn't making up for the lost power with the extra timing.
The first combo should have been around 17 and this present combo should see 14 or more. I am at sea level. Anyone running these combinations with any data to share ? Thanks
The first combo should have been around 17 and this present combo should see 14 or more. I am at sea level. Anyone running these combinations with any data to share ? Thanks
Last edited by SICAMG; Sep 24, 2017 at 08:52 PM.
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2004 CLK 500
Always had at least 2 lb's lower boost than what been advertised with most combinations.Was running a Kleeman 168 lower and 77 upper and made 15lb's of boost.Now I have a 84 upper and make 12.5 lbs of boost.
The first combo should have been around 17 and this present combo should see 14 or more. I am at sea level. Anyone running these combinations with any data to share ? Thanks
The first combo should have been around 17 and this present combo should see 14 or more. I am at sea level. Anyone running these combinations with any data to share ? Thanks
Thread Starter
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2005 e55 AMG
Shorty headers and second cat and resonator delete. Mufflers where also slightly bypassed internally.
I see that a 168 and 77 upper is like a 205 mm lower boost wise on the boost chart and that's a big pulley to run but never saw north of 15 lbs so may go back to the 77 upper.
I can say temperatures are around 15-20 degrees cooler under boost with less boost but car is a little low on power even with lower iat's and sightly more timing.
I see that a 168 and 77 upper is like a 205 mm lower boost wise on the boost chart and that's a big pulley to run but never saw north of 15 lbs so may go back to the 77 upper.
I can say temperatures are around 15-20 degrees cooler under boost with less boost but car is a little low on power even with lower iat's and sightly more timing.
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From: South Africa
2018 E63s AMG (Current) 2011 CL63 AMG (Sold) 2005 CLS55 AMG (Sold) 2004 C32 AMG (Sold)
I know I lost boost when I installed Headers, but I can't say how much it was. I see you have shorty headers.. Would be nice to know what boost loss is installing the headers.
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2005 e55 AMG
Well I know boost pressure is back pressure but this car always seemed to have a lower number even stock. Like I said the 168/77 is a pretty stout combo but it only makes 15 lbs....3 pounds shy of the claimed 17 lb's and still spinning the blower at that high rpm. 
That's really my only concern.
That's really my only concern.
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Joined: Jan 2007
Posts: 979
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From: South Africa
2018 E63s AMG (Current) 2011 CL63 AMG (Sold) 2005 CLS55 AMG (Sold) 2004 C32 AMG (Sold)
Hmm 3 psi is quite a bit lower, especially you are at sea level. I guess the unit is not a high mileage, or boost sensor issue?
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Thread Starter
MBWorld Fanatic!
Joined: Jul 2014
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Likes: 586
2005 e55 AMG
New sensor and 60k on car. It has always read low stock or modded. I guess it is what it is. It's making great power so not going to worry about it but was curious as to what others have seen.
