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phila_dot
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« Reply #375 on: January 27, 2013, 10:05:16 AM »
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Any idea why the guy's setup in that AZ thread didn't equalize itself?
There's way to many unknowns to really say. He ignored the questions regarding trims, how much was he driving, how was he driving, was he clearing codes... AFAIK, pump headroom should overcome that, but I'm not going to pretend to be an engineer here. |
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nyet
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« Reply #376 on: January 27, 2013, 12:39:55 PM »
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just remember to keep an eye on ps_w every log...
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marcellus
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« Reply #377 on: January 27, 2013, 02:24:43 PM »
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I am way past PS_W. I am around 25psi tapering to 23.
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britishturbo
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« Reply #378 on: January 27, 2013, 02:31:35 PM »
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I am way past PS_W. I am around 25psi tapering to 23.
Then you should under scale some more. |
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marcellus
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« Reply #379 on: January 27, 2013, 02:55:00 PM »
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Then you should under scale some more.
Rephrase: I am past ps_w, and am compensating for it by underscaling so I can fuel past 22psi. |
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marcellus
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« Reply #380 on: February 03, 2013, 02:09:59 AM »
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My best to date. (patiently waiting on the 4 bar stuff)
I am having problems getting boost to spike sooner without waaaay overshooting. I am aiming for 27psi. I have been moving the RPM axis for the PID around and trying to dial it within the rpms ranges that need the most manipulation.
I am pretty sure there is quite a bit left in the setup, boost isn't leveling off until 4750 which is quite a bit longer than I want. It also doesn't stay flat, I am still working on that part slowly but surely. Timing is a lot less than what I wish I could run, but that's pump gas for you. Water/Meth should take care of that.
Lastly it might be time to drop the spark plug gap down a bit more.
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« Last Edit: February 03, 2013, 03:33:19 PM by marcellus »
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jibberjive
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« Reply #381 on: February 03, 2013, 03:59:10 AM »
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What is your current scheme for controlling the VGT and wastegate (ie. N75 only on VGT, no wastegate?)?
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nyet
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« Reply #382 on: February 03, 2013, 10:32:29 AM »
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post up the .csv .. i'd like to take a look at your WGDC
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britishturbo
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« Reply #383 on: February 03, 2013, 10:38:28 AM »
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What's your AFR look like?
It looks like you're losing a lot of power to timing there...
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marcellus
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« Reply #384 on: February 03, 2013, 11:41:36 AM »
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It is running around 11.4-5 at redline. A bit richer as I dial in boost/underscale MAF, BLAH BLAH around 4-5k. I will post up the log later this afternoon and you.guys can give me some tips.
I am using a wastegate actuator to control the VGT. I think I have it set to start opening around 18-20psi. The n75 is controlling the external WG with a 11psi spring.
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marcellus
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« Reply #385 on: February 03, 2013, 03:24:22 PM »
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From my pull this morning. I upped some duty and overshot a bit. I still cant get the ramp up to stay moving until desired boost. I lost a bit on this run.
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marcellus
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« Reply #386 on: February 03, 2013, 03:34:09 PM »
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updated 3.33 fats log with .CSV from that run both logger and zeitronix.
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prj
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« Reply #387 on: February 03, 2013, 04:01:26 PM »
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I recommend you check your EGT's.
Too lean, too little timing and actual AFR all over the place.
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marcellus
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« Reply #388 on: February 03, 2013, 04:14:32 PM »
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I recommend you check your EGT's.
Too lean, too little timing and actual AFR all over the place.
Yessir ADD: what kind of things help lower EGT? |
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« Last Edit: February 03, 2013, 04:17:15 PM by marcellus »
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prj
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« Reply #389 on: February 03, 2013, 05:28:45 PM »
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You can think of timing as efficiency.
More timing, more energy spent pushing the piston and less spent as heat going to the exhaust...
Also, more fuel helps cool the cylinder and reduces EGT as well. As long as you use a non-vapour fuel... Don't try it on LPG.
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