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what is stock maximum boost? What about new max with you guys with chips?

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Old 12-13-2002, 06:32 AM
  #21  
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Default I didn't mean to suggest you were wrong, it's just that we know that X does not produce

that much boost up to 5200 rpms on a mechanically sound S4.

I was simply trying to help.

Spikes of 19psi to ~4k rpms are acceptable in the higher gears, so it sounds like you are OK.

Sorry for any misunderstanding.
Old 12-13-2002, 06:36 AM
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Check MAF flow in VAG, and there's your answer about whether it's really helping.
Old 12-13-2002, 06:37 AM
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Default Surprised you didn't say anything about his XR though - real problem there.

Requested 1.2 and actual 1.6... sounds like some N75 control issue there.
Old 12-13-2002, 06:39 AM
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Default Yes, I agree. Looks like a problem with his N75 system...

but I'll see if he wants to handle this offline. I seem to have offended him somewhat.
Old 12-13-2002, 06:45 AM
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Stock: 0.85 bar max.... ABT: 1.2 bar max.... MTM: 1.1 bar max
Old 12-13-2002, 07:34 AM
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Default The "peak hold" mode shows the highest spike. (m)

Go to the real time display mode to get max sustained boost. You'll find it to be a highly variable pressure.

The Defi HUD reads out in Kg/cm2 = Bar = Atmospheres.
Old 12-13-2002, 07:49 AM
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did that. approx 380+ above 3k rpms... 390 peak.
Old 12-13-2002, 07:54 AM
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Default the car is running well IMHO. besides, last few times I asked for help offline with you I got the

same results...

I'm much more comfortable working on my car and figuring it out myself. I got tired of hearing there must be something wrong with my car after I had already tested everything you suggested. I was also tired of getting program updates which simply did nothing to come even close to solving my problems.

If your offline customer service were as good as you suggest online, I would have had everything figured out a long time ago.
Old 12-13-2002, 07:55 AM
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Default Here's the conversions for Bar, Psi, and Kgf/cm^2

to convert from Kgf/cm^2 to bar multiply by 0.9807

to convert from Kgf/cm^2 to psi multiply by 14.223

to convert from psi to bar divide by 14.504

to convert from bar to psi multiply by 14.504

1 atm = 1.013 bar = 14.696 psi

I'm only 1/2 way through my coffee, so these could be off.....
Old 12-13-2002, 07:57 AM
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Default that is possible. could be a bad N75. however, X chip requested and actual boost curves are

very close.

it is only xr chip requested and actual boost curves which are far apart.


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