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MBWorld Fanatic!
Joined: Sep 2006
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From: Long Island New York
2003 SL55,2020 GTC ,2017 GTS sold ,2002 G500 Sold,2003 SL500 Sold,
Boost question
What psi should I be seeing 168 lower 84 upper pulley ,kleemann headers and kleemann cams that chart says around 14 but headers and cams may lower that number
Senior Member
Joined: Sep 2013
Posts: 416
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E55
About 12psi or so
You don't have much restriction and that's all boost is, a measure of restriction
Rather be making 500hp with only 11psi vs. 500hp with 13psi
Less heat on the motor and less stress on the motor
You don't have much restriction and that's all boost is, a measure of restriction
Rather be making 500hp with only 11psi vs. 500hp with 13psi
Less heat on the motor and less stress on the motor
MBWorld Fanatic!
Joined: Oct 2012
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From: L.I. NY
2011 CTSV auto, 06 E55 white pano, 87 Grand national, 63 split window
I know Kevin and his car pretty well and it runs real well. I would love to find someone who has the same stuff as him...less the cams...and see what they ran at the track and/or dyno numbers. I strongly believe that he would run just into the 10's with a tire and that is without a dyno tune! 
At worst I think 11.0x. IMO
Kustom2k1: I just watched your vid...good run for sure but I strongly think that cntrline's car will trap more like 123-124mph but I see that you are in Fla. so that would make a dif as well. What were the temps outside when you ran that?
At worst I think 11.0x. IMOKustom2k1: I just watched your vid...good run for sure but I strongly think that cntrline's car will trap more like 123-124mph but I see that you are in Fla. so that would make a dif as well. What were the temps outside when you ran that?
Last edited by 60nomad; Oct 28, 2013 at 12:03 PM.
MBWorld Fanatic!
Joined: Jan 2011
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2006 E55
I'm seeing roughly a max of ~11.2psi (using my datalog app) with only an 84mm upper (stock crank). I want my boost to stay as is and would rather make more "efficient" power, say with headers, than with more boost.
Like the previous poster said, I'd rather make the same amount of power with less boost rather than more boost.
Like the previous poster said, I'd rather make the same amount of power with less boost rather than more boost.
