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Megasquirt I need some help here...

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Old 06-07-10, 12:23 AM
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I need some help here...

Can someone tell me if this is something relating to tuning or mechanical? My Fuel Ve Table 3 looks rediculous and I'm not sure where to start.

I'm really rich (10.0) around 3000 to 4000 rpm and then really lean around 5000 to 6000 rpm on boost.
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Old 06-07-10, 10:09 AM
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What are you using 2 VE tables for?

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Old 06-07-10, 10:41 AM
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To tune one off boost and one on boost. It actually worked before where my afrs were consistent but now for some reason it's not.
Old 06-08-10, 10:46 AM
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What changed?

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Old 06-08-10, 11:34 AM
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Well I had a LIM gasket leak which is fixed now. My wastegate spring gave out on me and changed that. That is the only thing that changed.
Old 06-10-10, 09:25 AM
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The LIM gasket leak would definitely cause the need to retune a bit, and the wastegate spring could too.

It sounds like you made mechanical changes that will require a retune to me.

Ken
Old 06-10-10, 09:04 PM
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yea I'm in the process of that right now. I just noticed that for the 3000-4000 rpm rich spot was due to my secondaries turning on so I have to tune for that section of the map and also since now all my boost is making it to the motor it seems that my peak torque really shines at around 5000 to 5500 rpm.
Old 06-10-10, 10:27 PM
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Hey Ken another question...is it normal to lower the map where secondaries are turning on? I'm using KPA and RPM to activate the secondaries.
Old 06-15-10, 04:57 PM
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ok started tuning a bit more and seems a little better but it's really rich now as I changed my injector open time to 1.3 ms. also can anyone help with ideas on leaning out the area where my secondaries are coming on.
Old 06-15-10, 08:11 PM
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I typically use the table-based staging anymore, so I don't get any oddity when the secondaries come on.

If you post your staging settings that might help me figure out why it's going rich when they come on.

Ken
Old 06-15-10, 11:49 PM
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here's the msq:
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