Forcing boost disable - easiest way possible?

blackhole · **Joined:** Sat Aug 19, 2006 5:11 am **Posts:** 5

What the easiest way to force boost control disable w/o affecting the rest of the ECM? I was thinking that it could be a simple as:

1. Changing the "Boost Control Disable (IAM)" to values >1 (DBW) OR
2. Zero out the WGDC and target boost tables

But for #1 I saw this from merchgod while searching - seems to apply to both non- and DBW ECMs

Quote:

Although there are thresholds to disable boost control (less than an IAM of 6), it requires that you also have fine correction learning of less than ~5 degrees for a period of time in addition to IAM < 6...

#2 is just more work and I'm lazy since I'd have to change 20 ROMs.

Why do I want this? I'm building a design of experiment for tuning and want to run minimal boost as an added safety precaution but not influence other parts of the ECM's operating behavior. Too much timing + too much boost + not enough fuel = new motor. :cry:

Kyle "BlackHole"
05 Legacy GT

mickeyd2005 · **Joined:** Wed Oct 25, 2006 4:32 am **Posts:** 3040

I zero out the MAX WGDC table.

You can also physically run a line from the compressor nipple to the actuator. If a physical change is acceptable.

gabedude · **Posted:** Fri Jul 18, 2008 8:35 pm

I zero out the max and min too. Right now I just have a line running from the turbo the the actuator because I have an upgraded BCS to install still and meth to wire into it with a failsafe and my own "economy" mode switch (which will turn meth off and enable WG boost).

fujiillin · **Joined:** Wed Feb 13, 2008 3:00 am **Posts:** 153

Disabling the BCS or running a line directly from the compressor will drop you down to spring pressure.

If you like, you can also disconnect the wastegate actuator to run even less pressure.

RomRaider

Forcing boost disable - easiest way possible?

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