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Re: more T.A.P. Dancing
- To: quattro@coimbra.ans.net (Non Receipt Notification Requested) (IPM Return Requested)
- Subject: Re: more T.A.P. Dancing
- From: glen.powell@smc.com
- Date: 21 Apr 1995 12:39:42 -0400
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- P1-Content-Type: P2
- P1-Message-Id: US*ATTMAIL*SMCLAN;X400ATT Apr 21 12:39:42 1995
- P1-Recipient: quattro@coimbra.ans.net
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- Sender: quattro-owner@coimbra.ans.net
- Ua-Content-Id: 423912210495
- X400-Trace: US*ATTMAIL*SMCLANarrival 21 Apr 1995 12:39:42 -0400action Relayed
My suspiscion is, since the TAP mod doesn't actually change the PROM
contents at all, and just defeats the over-boost protection, is that the
TAP mod does not do anything to the way the CPU controls the WG, or the
ignition timing or fuel delivery either, and likely does not increase the
rev limiter value either. If this speculation is all accurate then there
are *additional* problems with the TAP mod. Since the boost sensor's
output is clamped, ignition timing cannot be adjusted for boost levels
above that maximum threshold. This is not good. The stock CPU backs off
the ignition advance as a function of boost presssure, as well as for
other paramaters such as intake charge temp. The TAP mod would defeat
this protection for boost levels above the sensor-clamped level.
BOOM!/melted pistons could ruin your whole day.
-glen