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Old 07-19-2012, 07:14 PM   #1801
dexterous
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11s at startup, low 13s fully warm. I am told that this will be a non-issue on E85.
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Old 07-19-2012, 07:17 PM   #1802
binjoau
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Quote:
Originally Posted by dexterous
11s at startup, low 13s fully warm. I am told that this will be a non-issue on E85.
That's not even that bad as is
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Old 07-19-2012, 07:37 PM   #1803
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Great news bro. Good to here its up and running.
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Old 07-19-2012, 10:47 PM   #1804
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Thanks guys!
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Old 07-20-2012, 12:14 PM   #1805
kellygnsd
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Quote:
Originally Posted by alcoolaid View Post
It's the exact same sensor. You can use whatever data you want.

I used neither. Just used the built in AC Delphi Cal in the vipec firmware.

Quote:
Originally Posted by kellygnsd View Post
The readings using the default AC Delphi cal curve in Vipec and the cal they supply if you manually enter them are not the same. IIRC there was about a 4C difference at 25C using the default cal curve.

Just a note, after finally updating my firmware the cal data from the sensor manufacturer matches the cal data in the default Delphi AC IAT table from 0 - 150 C. -40C to zero is still off but that range isn't all that important.
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Old 07-20-2012, 08:30 PM   #1806
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I love it when a plan comes together................
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Old 07-20-2012, 09:11 PM   #1807
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Quote:
Originally Posted by Token-Negro View Post
I love it when a plan comes together................


Enjoy, Dex!
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Old 07-20-2012, 10:24 PM   #1808
dexterous
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Thanks guys! I have a long way to go before I find out what it can really do but at least I have a way of getting those last few break-in miles on the car now.
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Old 07-22-2012, 12:07 PM   #1809
slowgenius
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Tom, it was great to see your car out and about yesterday! I hope you got to put some miles on it after the car show.
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Old 07-23-2012, 07:47 PM   #1810
dexterous
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Yes, lots of miles! I currently have 1057 miles on the motor so I am due for an oil change. Phil wants 1300-1400 miles on the motor before we push it so hopefully it lasts that long this time.
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Old 07-23-2012, 09:01 PM   #1811
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Sooo.... Tune this friday ?!
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Old 07-23-2012, 10:17 PM   #1812
dexterous
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LOL, I wish.
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Old 07-24-2012, 11:31 PM   #1813
kurion
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Glad to hear your making progress on your car again. One quick question, if I recall you switched to ID2000 injectors and an Accessport for tuning at the moment.

So how come your idle AFRs are in the 11-13 range? I thought that the newest cobb accessport software allowed IPW changes under the stock ECU, allowing the ECU/car to idle closer to 14.XX (similar to a standalone) on pump gas. (where as on the stock ECU with an on opensource tune IPW cannot be changed at this time)

Just curious, thanks
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Old 07-25-2012, 07:25 AM   #1814
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What are you referring to when you say "IPW?" Are you talking about Injector Pulse Width?
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Old 07-25-2012, 09:02 AM   #1815
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Yes, as kurion said, there is a minimum IPW parameter in the Stock ECU. It can be changed. It's just a matter of finding out where this value is located in the ROM. I'm running a 16-bit ROM and I've reduced mine significantly.

However, injectors themselves physically have unstable response at extremely low pulsewidths. They may idle in steady-state at IPWs below this but transient response will suffer. How much will it suffer? That'll depend on the injector and setup.
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Old 07-25-2012, 09:40 AM   #1816
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Yup IPW is injector pulse width. To grossly over simplify some of the info from other threads regarding trying to idle with big injectors on E85 vs. pump 93, the reason a standalone may work better when trying to idle large injectors on pump 93 (not e85) is that the standalone gave better control over many fueling functions, one such parameter being IPW, and some standalone also had better injector drivers etc etc. (assuming you want to hit a 14.xx idle afr)

MRF582 - thanks for the info, wasn't aware that you could change the IPW in an open source tune on the stock ECU - thought that was an accessport only feature at the moment. However, like you pointed out it still might be moot due to the unstable responses at low pulse width.

I really wish there was a good 1300cc to 1600cc injector that I can run on the stock ecu that with a higher base pressure that is safe for all fuel types... oh well...
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Old 07-25-2012, 12:27 PM   #1817
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OK, I didn't know there was a minimum pulse width, I have the "Intermediate" level box checked on RomRaider but I rarely get into anything beyond the wastegate, open loop fuel, and ignition timing maps (I wouldn't call myself a tuner, I can do mild adjustments confidently but nothing like tuning for a big cam or much larger MAF, etc).

The no-adjusting-IPW on open source comment confused me a bit, since changing the IPW is what the fuel maps do in the first place (albeit indirectly)

Last edited by jsquared; 07-25-2012 at 12:27 PM. Reason: where the heck did my cursor go?
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Old 07-25-2012, 02:41 PM   #1818
kellygnsd
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Quote:
Originally Posted by jsquared View Post
OK, I didn't know there was a minimum pulse width, I have the "Intermediate" level box checked on RomRaider but I rarely get into anything beyond the wastegate, open loop fuel, and ignition timing maps (I wouldn't call myself a tuner, I can do mild adjustments confidently but nothing like tuning for a big cam or much larger MAF, etc).

The no-adjusting-IPW on open source comment confused me a bit, since changing the IPW is what the fuel maps do in the first place (albeit indirectly)
He means minimum IPW. There is a lower limit for IPW, below that you cannot go below no matter what you enter in your fuel table.
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Old 07-25-2012, 11:49 PM   #1819
dexterous
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So my local tuner has been working directly with the guys at COBB to get my idle under control. He sent me a new map tonight and after a few minutes of testing I can tell you that there's an amazing difference. The car now idles at 14.7:1 on ID2000s and 93oct! The idle isn't super stable as its got about a 100RPM wonder but for doing this remotely I am pretty impressed. He tells me that COBB is working hard at improving the AP software so that the stock ECU / ID2000 combo will idle at near stock stability. In the meantime, this will work!
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Old 07-26-2012, 12:40 AM   #1820
binjoau
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Quote:
Originally Posted by dexterous
So my local tuner has been working directly with the guys at COBB to get my idle under control. He sent me a new map tonight and after a few minutes of testing I can tell you that there's an amazing difference. The car now idles at 14.7:1 on ID2000s and 93oct! The idle isn't super stable as its got about a 100RPM wonder but for doing this remotely I am pretty impressed. He tells me that COBB is working hard at improving the AP software so that the stock ECU / ID2000 combo will idle at near stock stability. In the meantime, this will work!
That's still very impressive, congrats!
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Old 07-28-2012, 02:34 PM   #1821
dexterous
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I am super super happy to tell you guys that the uneven bank problem that has plagued my car since I put it back together this winter is 100% solved!!!

This pict is from today, plugs with the underlined numbers are from the drivers side:




Here's what both drivers side plugs looked like previously:




This may seem like a small victory for some but trust me when I tell you that its a VERY big deal to me. After everything that happened last year, the pain of the rebuild and the discovery that the car was still unusable this spring, I couldn't even stand to go into my garage. Its an amazing feeling to know that I can jump in the car any time I want, drive it to work, drive it to the store or just drive around the block and ENJOY doing it.

I would like to say thank you to all my local friends who came over to help, drink a few beers and offer encouragement while I forced my self to wrench on a car that I couldn't even look at.

I would like to say thank you to all of my "Built Motor Discussion" friends who have been so positive and encouraging throughout the past two years.

I would like to thank Phil from Element for putting up with the ten thousand emails that I sent him and all the advice he has given me.

I would like to thank Adam at Buddsautoparts.com for his continued support.

I would like to thank my Wife Molly for being such an awesome "car Wife" as she calls her self.

Finally, I would like to thank God for blessing me with a life where a basket-case, over the top, sports car is one of the most worrisome thing that I have to deal with.

Last edited by dexterous; 07-28-2012 at 09:56 PM.
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Old 07-28-2012, 02:51 PM   #1822
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It was a long road but you made it!

Congrats on getting all those gremlins figured out.
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Old 07-28-2012, 03:12 PM   #1823
KillerBMotorsport
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Awesome, great news! Here's to hoping for more of the same!!!
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Old 07-28-2012, 03:18 PM   #1824
Tenacious Bee
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So, what to play
with next ?

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Well said Tom. I got more from your post than a happy end to a build thread problem. So thank you..
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Old 07-28-2012, 05:09 PM   #1825
Layvon
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congratulations man. Small steps lead to big things! I'm happy for you brotha
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