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Shuiend blows motor #5; Naturally Aspirated Glory Incoming

Old 03-29-2011, 01:44 PM
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Originally Posted by TurboTim
What's those jagged spikes/drops in the duty cycle/pulse width?
The AFR changes a little bit. Goes from 11.5:1AFR to 12.1AFR briefly and that caused the spikes. The tune still needs a lot of time spent on it.
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Old 03-29-2011, 02:18 PM
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Soo it's closed loop feedback that's making the changes?

I'm scared to run closed loop at WOT. I did it once and got something similar to your spikes but more violent, fortunately I let off before any damage.
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Old 03-29-2011, 02:19 PM
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closed loop should be off in boost...
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Old 03-29-2011, 02:20 PM
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I'll tend to agree...Larz?? Something's causing those injector pulse widths to change.
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Old 03-29-2011, 02:26 PM
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those pulsewidth block changes are accel enrichment. raise the thresholds for MAP and TPS sensitivity.

incidentally, I love running closed loop in boost. y'all too paranoid.
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Old 03-29-2011, 03:13 PM
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I really think it has to do with how the 4 fuel cells that it is passing through at those points are tuned. Right now they are really rough and that is causing it to go slightly lean. Below is what my fuel table currently looks like. The 4 boxes that are grey are where it is when those spikes occure. I think the one that has 177 in it just needs a little bit more fuel.

I was also AutoTuning with VEAL on during this time.

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Old 03-29-2011, 03:33 PM
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check for bit 7/8 in mlv, those flags indicate when the accel enrichments kicks in
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Old 03-29-2011, 03:43 PM
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MAP based enrichment was kicking in. we had him set accel to 100% TPS based to avoid MAP noise causing enrich/enleanments.
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Old 03-29-2011, 04:43 PM
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He needs my "2 pole" MAP filter circuit.
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Old 03-29-2011, 04:58 PM
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the software has built in filtering, he just needs to apply it.
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Old 03-29-2011, 07:23 PM
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Originally Posted by shuiend
I really think it has to do with how the 4 fuel cells that it is passing through at those points are tuned. Right now they are really rough and that is causing it to go slightly lean. Below is what my fuel table currently looks like. The 4 boxes that are grey are where it is when those spikes occure. I think the one that has 177 in it just needs a little bit more fuel.

I was also AutoTuning with VEAL on during this time.

What happens if you smooth those cells out? That's a pretty big hole.
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Old 03-29-2011, 08:13 PM
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Originally Posted by Braineack
the software has built in filtering, he just needs to apply it.
I have found that filtering only applies to the MAP value but not for the mapdot, wich triggers the enrichments when they are MAP based. Unless this was fixed in MS3, the quickest way to fix the problem is using a small fuel filter to damp the fast changes in MAP signal.

http://image.made-in-china.com/2f0j0...lter-GF61-.jpg
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Old 03-30-2011, 11:46 AM
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I just had Tim order me a new black BOV. Hells Yah.
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Old 03-30-2011, 11:56 AM
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bling. hows thats part time job working out for you?
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Old 03-30-2011, 12:01 PM
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Originally Posted by Braineack
bling. hows thats part time job working out for you?
It provides ramen noodles for food and absurdflow goodness for my car. Everyone can see where my priorities are.
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Old 03-30-2011, 12:08 PM
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^ LOL so theyre the same as my priorities then!
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Old 03-30-2011, 12:46 PM
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Originally Posted by shuiend
I just had Tim order me a new black BOV. Hells Yah.
Those are wastegates bud. You want this, right? Ask Trey what spring to get.

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Old 03-30-2011, 12:50 PM
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Originally Posted by TurboTim
Those are wastegates bud. You want this, right? Ask Trey what spring to get.

Wow Tial totally has the wrong picture sitting on their website for the Tial Q BOV for available finishes. That is where I stole the picture from.
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Old 03-30-2011, 07:20 PM
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Yes or no to mounting my MS3 on the rear shelf?
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Old 03-30-2011, 07:24 PM
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Originally Posted by shuiend
Spool on the ChinaCharger is definitely a little slower then I would like. In a 4th gear pull in my 6speed I have 100kpa at 2800rpms and get to 200kpa at 5800rpms. It makes me a little sad. But damn does it still pull. I do not have VVT up and running yet so hopefully when I get that setup it helps the spool out a good bit.
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