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What is the highest boost in a 55k?

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Old Mar 9, 2014 | 01:12 PM
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What is the highest boost in a 55k?
How much boost are you running and do you have any limp mode issues? Apparently some people are running into limp mode issues higher than 17 PSI
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Old Mar 9, 2014 | 04:09 PM
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W211 E55
I peak at 16.5 so I must be lucky that I'm running right up the problem point
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Old Mar 9, 2014 | 07:13 PM
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16.5 here and no issues either
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Old Mar 9, 2014 | 07:35 PM
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clk63, cls55, ml63, (w210) E55
Hitting up to 17.4 psi (185 crank/supercharger pulley) and hitting failsafe. Splitsec map clamp set to 4.25v and going with BIP Tuning to fix what other tuners can't. No failsafe, brother. ..
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Old Mar 9, 2014 | 09:33 PM
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Damn all of you guys run more boost than I do
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Old Mar 10, 2014 | 05:24 AM
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Had mine in the 18-19 psi range almist on a daily basis with no issues at all. Stock MAP sensor and im still running the canned tune that Steve @ Weistec gave me to get the thing running, no custom dyno tune yet.
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Old Mar 10, 2014 | 11:43 AM
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I was hitting 16.5 psi at sea level. Now I live close to 4,000 ft and I am hitting a little over 13 psi. 175 mm crank pulley and 80 mm fixed s/c pulley.

Bramage was hitting failsafe at 17.5 with 185 mm and I think an 80 or 83 mm upper.
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Old Mar 10, 2014 | 03:33 PM
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I'm not sure what my peak was but I when Jeremy and I did a road tune awhile back I recall him saying something about @ 15.1 it wasn't bleeding off any boost
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Old Mar 10, 2014 | 06:26 PM
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I'm making about 20.2psi and no limp mode. Some people get it at high boost and some don't. Trying to figure out what the difference is
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Old Mar 10, 2014 | 06:41 PM
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Originally Posted by blackbenzz
I'm making about 20.2psi and no limp mode. Some people get it at high boost and some don't. Trying to figure out what the difference is
Where are you measuring? Manifolds or the Y-pipe location?
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Old Mar 10, 2014 | 06:43 PM
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Originally Posted by Lenin
Where are you measuring? Manifolds or the Y-pipe location?
OBD2. I'm not running factory sc
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Old Mar 10, 2014 | 06:52 PM
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Originally Posted by blackbenzz
OBD2. I'm not running factory sc
haha. By now we all know that you are not running factory SC. I was asking because the placement of the sensor may account for some of the difference. I have seen a 2PSI difference between the manifold and the Y-pipe.
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Old Mar 10, 2014 | 07:08 PM
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Originally Posted by blackbenzz
I'm making about 20.2psi and no limp mode. Some people get it at high boost and some don't. Trying to figure out what the difference is
How's the Weistec working out? Did you get all of the bugs out?
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Old Mar 10, 2014 | 07:08 PM
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Originally Posted by Lenin
haha. By now we all know that you are not running factory SC. I was asking because the placement of the sensor may account for some of the difference. I have seen a 2PSI difference between the manifold and the Y-pipe.
Post Intercooler
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Old Mar 10, 2014 | 07:08 PM
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Originally Posted by Hammer Down
How's the Weistec working out? Did you get all of the bugs out?
Long story. Still needs tuning
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Old Mar 11, 2014 | 05:29 AM
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I think the difference might be how long the boost levels are high.

EREBUS is throwing codes but he's mile racing, and spending 4+ seconds with the MAP maxed out IIRC

Originally Posted by blackbenzz
I'm making about 20.2psi and no limp mode. Some people get it at high boost and some don't. Trying to figure out what the difference is
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