175mm Pulley Boost
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Joined: Jun 2010
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04' E55K
175mm Pulley Boost
Not sure if this is correct. I'm reading about 10.5 psi using the Torque app on my Android phone. This is pretty consistent at WOT.
My mods include LT EC headers, primary and sec cat deletes, x-pipe. Still have stock resonator and mufflers.
I've read that less exhaust restriction will result in lower boost pressures. I've read for a VRP 175mm pulley the boost rises around 4psi to around 14.2psi. Just curious is 3.7psi drop is inline with my mods.
thx
My mods include LT EC headers, primary and sec cat deletes, x-pipe. Still have stock resonator and mufflers.
I've read that less exhaust restriction will result in lower boost pressures. I've read for a VRP 175mm pulley the boost rises around 4psi to around 14.2psi. Just curious is 3.7psi drop is inline with my mods.
thx
MBWorld Fanatic!
Joined: Jun 2010
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From: Puerto Rico
2005 E55 AMG
That doesn't sound right. Your mods are nearly identical to mine and I see 13.5-14.5psi depending on the revs. My pulley is slightly larger ( 178mm ) but a 2mm difference in pulley is barely noticeable.
MBWorld Fanatic!
Joined: Aug 2007
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From: Jacksonville, FL
05 White Pano E55, Cadillac CTS-V
Here is a log with "180" asp pulley which is actually 178mm where the belt rides. Kleeman headers, no cats and exhaust.
EDIT: Log is from the man above.
EDIT: Log is from the man above.
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Thread Starter
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Joined: Jun 2010
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04' E55K
I attached another one from today with the labels. I also included the MAF which reads 422 g/s which work out to .94 cfm or 26.624 lts/m. I also checkout my vacuum at idle and it's steady 20 inches of vacuum. I hope some of this data helps.
MBWorld Fanatic!
Joined: Jun 2010
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From: Puerto Rico
2005 E55 AMG
Sorry but those logs don't seem to make much sense. I think it's your logging application that's not right.
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From: Porter Ranch, CA
E55, CTS-V Wagon, Duc 1098R
