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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > How much boot is the procede running?



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      05-15-2007, 11:31 AM   #23
kptaylor
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Correct in saying you'd need to read the turbo manufacturer's specs to see if higher boost has any real impact on the turbos.

Check out vwvortex.com or audizine.com for VAG people running higher boost on stock turbos without any real "bad" effects. Plenty of high mileage, higher boosting cars. (Both gas and diesel!)

Don't jump to conclusions without having the details handy...
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      05-15-2007, 12:16 PM   #24
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stock K03 turbos are running up to 20lbs of boost.... not like its helping them at all blowing hot air, but they are boosting that high.
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      05-15-2007, 07:55 PM   #25
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Quote:
Originally Posted by CEA 3 View Post
stock K03 turbos are running up to 20lbs of boost.... not like its helping them at all blowing hot air, but they are boosting that high.
We all couldn't afford eliminators...
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      05-18-2007, 12:43 PM   #26
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Shiv claims 2 lbs over stock which is totally wrong

Average boost is 14-15psi

Stock is 8-8.5
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      05-18-2007, 01:09 PM   #27
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Quote:
Originally Posted by cupspeed View Post
Shiv claims 2 lbs over stock which is totally wrong

Average boost is 14-15psi

Stock is 8-8.5
14lbs max. I have never gone over 14 on my gauge.
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      05-18-2007, 01:42 PM   #28
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Originally Posted by SoCal335i View Post
14lbs max. I have never gone over 14 on my gauge.
It can well be no more than 14psi, but one cannot say that based on a gauge. Typically a boost gauge is not accurate enough to differentiate boost difference between e.g. 14 and 14.5. That is both a calibration issue and a delay issue. There is always some delay in the gauge.

Even assuming unrealistically that a gauge would react real time (=the mass of the mechanical parts would be zero) and be perfectly calibrated and 100% correct, the boost peaks would last so little time that one is not able to have an accurate perception of the reading.

Typically the best gauges are dampened, so that it would be easy to read them.
Btw, the difference between 14 and 14.5 is immaterial. I would not care if it were 14.5, although i've understood that it's probably no more than 14.
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      05-18-2007, 02:32 PM   #29
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Quote:
Originally Posted by bnj View Post
It can well be no more than 14psi, but one cannot say that based on a gauge. Typically a boost gauge is not accurate enough to differentiate boost difference between e.g. 14 and 14.5. That is both a calibration issue and a delay issue. There is always some delay in the gauge.

Even assuming unrealistically that a gauge would react real time (=the mass of the mechanical parts would be zero) and be perfectly calibrated and 100% correct, the boost peaks would last so little time that one is not able to have an accurate perception of the reading.

Typically the best gauges are dampened, so that it would be easy to read them.
Btw, the difference between 14 and 14.5 is immaterial. I would not care if it were 14.5, although i've understood that it's probably no more than 14.
Even if it peaked and say hit 15 lbs of boost i still have not had a CEL come on and everything with my car is working great (knocking on wood) So either way im very happy with my purchase of the procede. I dont need to know all the technical bullshit, thats not my part. Im a consumer, i just want a product thats going to have a great result when i put it in my car and not cause any problems which is how its going so far. I leave the technical stuff to the manufacturers.
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      05-18-2007, 02:44 PM   #30
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The "technical bullshit" has a relation to the thread title and some people might be interested in that.

Someone being pleased or not might not be of an interest in this thread.
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