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q: parallel MBC -- boost lag & tuning strategy

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Old 03-28-2005, 09:52 AM
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Default holy mother of all garbage ... today was even worse
i don't know whether to laugh or cry.

i cleared the codes, and the MAF code came back after a few runs:
....16487 - Mass Air Flow Sensor (G70): Signal too High
....P0103 - 35-10 - - - Intermittent

i set the max to 16psi and went logging.
today's graph (haha?):
<img src="http://bagodoosh.home.comcast.net/s4/115_mbc2.gif">

the best scenario (yellow) takes 2 seconds to reach spec. IIRC blue &amp; yellow were 3rd gear and green was 5th.

ho boy.
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Old 03-28-2005, 09:54 AM
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i would still like to see your MAF readings.
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Old 03-28-2005, 09:55 AM
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You have the X axis as time? Try making it RPM. Also, what year is your car?
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Old 03-28-2005, 10:02 AM
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Default vs. RPM would be better here. vs. time good for direct lag comparison.
***** has bigger things to worry about than lag though.

let's see those MAF logs.
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Old 03-28-2005, 10:16 AM
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Default hmm, i think some of my other pre-MBC graphs had spec-spikes as well.
i wouldn't go by that 1 graph alone.

i'll post what i have tonite.
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Old 03-28-2005, 10:20 AM
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Default 01.5 MBox -- i'll do MAF & repost "vs RPM" tonite
stay tuned; thanx for sticking around this long.
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Old 03-28-2005, 10:47 AM
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Default here's the mBar vs RPM graph of the same 3 recent runs..
this time i left the raw boost #s.

<img src="http://bagodoosh.home.comcast.net/s4/115_mbc2b.gif">

what can we conclude now? <img src="http://us.i1.yimg.com/us.yimg.com/i/mesg/emoticons6/39.gif">
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Old 03-28-2005, 10:50 AM
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Default looks a lot better than before. though there is still a big of lag in boost which can be caused..
by mbc iirc?
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Old 03-28-2005, 10:50 AM
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Check for leaks?
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Old 03-28-2005, 10:51 AM
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Default looks a lot better than before. though there is still a big of lag in boost which can be caused..
by mbc iirc?
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