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Poll - Best Stage 2+ GIAC-X setup -- old giac-x code w/ mbc&tcd OR just new giac-x code?...>

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Old 03-12-2007, 09:37 AM
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What is considered overboost on K03s that is causing my TC since I haven't gone past 19.2PSI?
Old 03-12-2007, 09:40 AM
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Default it's not the max boost it's the the speed at which the boost ramps.. the N75 has trouble

controling the boost causing the TC, IIRC ..however you may have some other problem.
Old 03-12-2007, 09:42 AM
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Doesn't an MBC control max boost? How does it fix TC then?
Old 03-12-2007, 09:43 AM
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Default IIRC overboost TC happens when actual boost is ~200 mbar (2.9 psi) over requested.

Here is an example on overboost TC on GIAC-X (see link). Requested boost is 16 psi and it spikes to 22 psi, causing it to pull throttle and create a dead spot in the HP curve.

By the way, I just ran with the new GIAC-X code, which does not have overshoot behavior to fix this.

Bruce<ul><li><a href="http://pictureposter.audiworld.com/44443/giac-x_boost_log_041705.jpg">click!</a></li></ul>
Old 03-12-2007, 09:49 AM
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Default So I could have TC if my car requests 10PSI but gets 13PSI... then a MBC would not help?...>>

what would help in this case?

Thanks again.
Old 03-12-2007, 09:52 AM
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your max boost even at 19.2 may be too high mine is set at just over 18 anything more and I get TC
Old 03-12-2007, 09:52 AM
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Default If you look at the requested boost on GIAC-X for WOT, is around 16-17 psi. If you set your MBC at

16 psi, you will be fine.

Bruce
Old 03-12-2007, 09:55 AM
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no idea.. rktskicar has more detailed info
Old 03-12-2007, 09:55 AM
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Thanks.
Old 03-12-2007, 09:56 AM
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Thanks.


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