Need to know about LC-1 - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


General Miata Chat A place to talk about anything Miata

Reply
 
 
 
LinkBack Thread Tools
Old 03-07-2007, 01:59 PM   #21
Junior Member
 
Join Date: May 2006
Location: Houston Area-Baytown, TX
Posts: 118
Total Cats: 0
Default

Quote:
Originally Posted by steelrat View Post
With the autotune, you can either feed it the WB signal, or the NB.

Personally, I would put the WB in a second bung, then feed the signal into the Air Flow Metre II input. I've already tried this, and it was working -- sort of with the NB....

If you get the latest version of the Emanage Tools software (there was a thread in the emanage forum).... you can use that to read the AFM-II input, and use that against the RPM, and other stuff to tune accordingly.....

Dave,
Why would you have to tune your car with the Autotune?
1991BRG is offline   Reply With Quote
Old 03-07-2007, 02:25 PM   #22
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,840
Total Cats: 1,786
Default

Quote:
Originally Posted by 1991BRG View Post
Why would you have to tune your car with the Autotune?

:gay:
Braineack is online now   Reply With Quote
Old 03-07-2007, 02:31 PM   #23
Senior Member
iTrader: (14)
 
brgracer's Avatar
 
Join Date: Nov 2004
Location: Ambler, PA
Posts: 1,275
Total Cats: 1
Default

Quote:
Originally Posted by 1991BRG View Post
Why would you have to tune your car with the Autotune?
The closer you get your tune to ideal, the less autotune needs to make adjustments so it makes for a better tune overall. It would also help in the initial adjustments to autotune. Also it would be useful when tuning timing.

Granted once autotune is up and running, there isn't much to do, but it is also nice to have a log of WB output vs. rpm/duty cycle/etc... just for tracking down any other issues, etc...
brgracer is offline   Reply With Quote
Old 03-07-2007, 02:58 PM   #24
Junior Member
 
Join Date: May 2006
Location: Houston Area-Baytown, TX
Posts: 118
Total Cats: 0
Default

Quote:
Originally Posted by brgracer View Post
The closer you get your tune to ideal, the less autotune needs to make adjustments so it makes for a better tune overall. It would also help in the initial adjustments to autotune. Also it would be useful when tuning timing.

Granted once autotune is up and running, there isn't much to do, but it is also nice to have a log of WB output vs. rpm/duty cycle/etc... just for tracking down any other issues, etc...
My brain is trying to digest all this new information, but using a wideband and properly tuning the emanage, the Autotune would no longer be required for tuning? (Just trying to understand if I am going to required an autotune?)
1991BRG is offline   Reply With Quote
Old 03-07-2007, 03:12 PM   #25
:(
iTrader: (7)
 
Join Date: Jul 2006
Location: nowhere
Posts: 8,281
Total Cats: 2
Default

auto tune is just for people to get in the ball park if you start with a fair map and pay attention and know a little about tuninng you can do without it. but if you have it use it and save some time if not then what ever you feell the most comfortable with should be your choice. In the end we can only lay out your options the choice is up to you we wont be tuning the car and experiencing the headaches first hand so GL man and i hope we can be of more help to you.
magnamx-5 is offline   Reply With Quote
Old 03-07-2007, 03:13 PM   #26
Senior Member
iTrader: (14)
 
brgracer's Avatar
 
Join Date: Nov 2004
Location: Ambler, PA
Posts: 1,275
Total Cats: 1
Default

Quote:
Originally Posted by 1991BRG View Post
My brain is trying to digest all this new information, but using a wideband and properly tuning the emanage, the Autotune would no longer be required for tuning? (Just trying to understand if I am going to required an autotune?)
Emanage uses a fixed map to adjust fueling that may not be the "best" tune for all situations. For example, at x level of boost and x rpm it adds x amount of additional fuel. If you are just tuning the emanage map, then this will give you a good base tune that will have to be a bit richer to accomodate for temp/load/etc... Using a WB, you could adjust the map based on the WB readings. Very time consuming to get a really, really good tune.

IMHO, autotune is vastly superior as it adjust fueling in a different way than the base map. Using the WB input, it adjusts fueling realtime to the target AFR in boost. Thus, regardless of load/temp/etc... the autotune will add/remove fuel as needed to keep your AFRs flat around 12-12.5. so the closer your base tune is to these levels, then less adjustment autotune needs to do.

For example, (all numbers are made up for sake of ease) lets say your emanage blue is set to deliver 25% more fuel at 5000rpm at 8psi of boost, then you will get 25% more fuel at this point regardless of load/temp/etc... BUT with autotune, at the same rpm and level of boost, emanage will adjust how much fuel you add (could be more or less than 25%) depending upon the feedback from the WB so if the WB is reading a little lean, it will add more fuel and vice versa.
brgracer is offline   Reply With Quote
Old 03-07-2007, 03:15 PM   #27
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,840
Total Cats: 1,786
Default

I've seen three of them in action, tom's included. I wouldn't hesitate to get one with an EMB.
Braineack is online now   Reply With Quote
Old 03-07-2007, 03:26 PM   #28
Senior Member
 
steelrat's Avatar
 
Join Date: Jul 2005
Posts: 514
Total Cats: 0
Default

Actually you still need a WB with the autotune... for it to work, really effectively.

The Autotune will put x level of fuel in, when it sees a "TPS value".... so.... if you have a WB, you can make sure you are still accurately getting your AFR that you want. It's a check point to make sure you aren't running too rich, or too lean. In my case, I think I'm going so rich, the NB O2, has been thinkin it's lean... so I've been adjusting my maps accordingly.

The Autotune is still running on the NB O2 in my car, but I'm dumping what I think is a lot of fuel for only 7psi of boost.... But since I don't have a WB yet.... I can't confirm this theory. That said, it makes adjusting the maps, and the "concept" of tuning much easier....

Think of it like this..... Your NB O2 has a voltage output for what it thinks the AFR is. So that voltage is feed into the TPS input on the emanage. Depending on what that voltage is, it will correspond to a TPS % (so 50% is 12.5 to 1). If the voltage at this point in time, is 13 to 1, then it will be a TPS % of 47, so you put on the map a unit of fuel to bring it back to 50% (the desired AFR). Then it will have the NB reading change, with the additional fuel, and say if you are over, then it will not add more. If it's still low, it will at it again... etc, etc, etc.... This calculation only occurs when the car is in boost.... (that's what the pressure switch is for). If it's not in boost, the EM will basically do nothing.

The WB O2 can be installed, so that it's also producing a "voltage" for the AFR..... which means, you can use that to look at the "real" AFR vs, what the NB is saying it is. So you can adjust your maps to get a more precise picture of what's happening.

One of the issues with a NB O2, is that it has a very "narrow" acurracy band... hence the name. So you are only trying to read voltages from 0 to 1 volt. A WB is normally 0-5v, which is a much "wider" zone... so you can really, really know what's going on....

I'm sure OG can jump in here to help explain it, if this isn't clear enough....

Dave,
steelrat is offline   Reply With Quote
Old 03-07-2007, 03:40 PM   #29
Junior Member
 
Join Date: May 2006
Location: Houston Area-Baytown, TX
Posts: 118
Total Cats: 0
Default

Thanks Steelrat, Braineack, BRGRacer and anyone else I might have left off. I just PM OlderGuy with my current and future setup for my car. Hopefully he will shed more light to my currently slightly confused brain.
1991BRG is offline   Reply With Quote
Old 03-07-2007, 05:51 PM   #30
Senior Member
Thread Starter
iTrader: (1)
 
miataspeed1point6's Avatar
 
Join Date: Feb 2006
Location: Detroit
Posts: 1,235
Total Cats: 0
Default

Lots of good info here! Here is how I understand it....

WBo2 feeding the Autotune = very good tune

Alpha tools for Emanage will allow me to map the WB as the Aif flow meter 2

The LC-1 can run my NB gauge as a WB

Will I be able to run the LC-1 to the gauge, EMB and Autotune? Or is it pick 2 of the 3 sort of thing?

Thanks again for all the info, I can change my signature now!!
miataspeed1point6 is offline   Reply With Quote
Old 03-07-2007, 08:43 PM   #31
Newb
 
Join Date: Dec 2006
Location: Auckland, New Zealand
Posts: 21
Total Cats: 0
Default

Without writing anything I am sitting back here having all my questions answered for me too!!
Thanks all.
jojonz is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
91 1.6l turbo complete part out. Tony the Tiger Miata parts for sale/trade 63 12-29-2016 03:23 AM
FS: JRSC w/ 62.5mm pulley, ITBs, MegaSquirt, LC-1 UrbanSoot Miata parts for sale/trade 20 09-12-2011 02:36 PM
Damaging an LC-1 sensor via heat? Savington MEGAsquirt 17 01-16-2008 06:24 PM
LC-1 question GTS Miata MEGAsquirt 6 09-30-2007 01:09 PM
LC-1 IN/OUT plugs KPLAFIN General Miata Chat 14 08-30-2007 12:29 AM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 02:15 PM.