MEGAsquirt A place to collectively sort out this megasquirt gizmo

all my stupid MS questions will go in this thread

Thread Tools
 
Search this Thread
 
Old 12-07-2007, 04:12 PM
  #21  
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
Default

Originally Posted by neogenesis2004
The above response breaks my rule of not posting in your threads, soley because you actually asked an intelligent question. It is an exception of the rule, I don't plan on it being a normal thing so you shouldn't either :P
Thank for breaking the rule. I'll do my best contribute more here. This concept has been a roadblock for me all week.
hustler is offline  
Old 12-07-2007, 04:14 PM
  #22  
Elite Member
iTrader: (12)
 
neogenesis2004's Avatar
 
Join Date: Aug 2006
Posts: 4,413
Total Cats: 20
Default

PWM is just a name of how to do something, it has no mathematical value.

DC is dependant on PW. You CONTROL the PW with MS.


I'm just busting your ***** on the rule thing, I just wish you would install your turbo kit already and stop ******* around. Once you put it on I guarantee you will regret that you took so ******* long to do it.
neogenesis2004 is offline  
Old 12-07-2007, 04:17 PM
  #23  
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,027
Total Cats: 6,593
Default

The period (time for one complete on/off cycle) is typically a constant. There are exceptions, but in this case consider this rule to be true. It is sometimes specified as a frequency, and sometimes as a duration. They are interchangeable.

The duty cycle is the % of time during each period that the signal is "on" vs. "off." That's the variable.

In this picture, the green trace has a duty cycle of 75%, the red trace is 50%, and the blue trace is 25%. They all have the same period. So all else being equal, modulating at the green level will effectively give you 75% of whatever the maximum available power is, and so on.

Joe Perez is online now  
Old 12-07-2007, 04:19 PM
  #24  
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
Default

Originally Posted by neogenesis2004
I'm just busting your ***** on the rule thing, I just wish you would install your turbo kit already and stop ******* around. Once you put it on I guarantee you will regret that you took so ******* long to do it.
I planned on taking November off which fell through, then december and now I'm packing to go out of town again. This car will be ready for track season in March, and I want the street car lap record at Hallett.
hustler is offline  
Old 12-07-2007, 04:20 PM
  #25  
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
Default

Originally Posted by Joe Perez
The period (time for one complete on/off cycle) is typically a constant. There are exceptions, but in this case consider this rule to be true. It is sometimes specified as a frequency, and sometimes as a duration. They are interchangeable.

The duty cycle is the % of time during each period that the signal is "on" vs. "off." That's the variable.

In this picture, the green trace has a duty cycle of 75%, the red trace is 50%, and the blue trace is 25%. They all have the same period. So all else being equal, modulating at the green level will effectively give you 75% of whatever the maximum available power is, and so on.

thanks. This drove the point home. Suddenly all the cold start **** makes sense again.
hustler is offline  
Old 12-07-2007, 04:20 PM
  #26  
Elite Member
iTrader: (12)
 
neogenesis2004's Avatar
 
Join Date: Aug 2006
Posts: 4,413
Total Cats: 20
Default

Joe and I are saying the same thing, so don't get confused. He just has prettier pictures of a more real world wave.
neogenesis2004 is offline  
Old 12-07-2007, 04:30 PM
  #27  
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,027
Total Cats: 6,593
Default

Originally Posted by neogenesis2004
He just has prettier pictures of a more real world wave.
It's amazing what you can do quickly with MS Excel.
Joe Perez is online now  
Old 12-08-2007, 11:03 PM
  #28  
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
Default new topic!!!

new topic:

I can't get my MS dashboard to show any lc-1 signal. I changed my grounds to the same point on the throttle body...but can't seem to find the ground from the ecm there. I did another free air calibration hooked it up, and still get nothing. I changed the configurator how according to DIY's manual.

Kinda stuck here.

Thanks


edit: going to garage armed with multimeter.

Last edited by hustler; 12-08-2007 at 11:18 PM.
hustler is offline  
Old 12-08-2007, 11:20 PM
  #29  
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,659
Total Cats: 134
Default

you may need to program the lc1's output, and make sure you're using the right analog out (there's 2). and make sure the analog out is actually hooked up to the MS, either through the correct pin on the aux connector or by splicing it in the nb wire, per the manual.

ps, thanks for creating a "build thread" instead of starting 100 new threads as your typical custom.
__________________
Chief of Floor Sweeping, DIYAutoTune.com & AMP EFI
Crew Chief, Car Owner & Least Valuable Driver, HongNorrthRacing

91 Turbo | 10AE Turbo | 01 Track Rat | #323 Mazda Champcar

Originally Posted by concealer404
Buy an MSPNP Pro, you'll feel better.
Ben is offline  
Old 12-08-2007, 11:36 PM
  #30  
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
Default

Originally Posted by Ben
you may need to program the lc1's output, and make sure you're using the right analog out (there's 2). and make sure the analog out is actually hooked up to the MS, either through the correct pin on the aux connector or by splicing it in the nb wire, per the manual.

ps, thanks for creating a "build thread" instead of starting 100 new threads as your typical custom.
I'm connected through the wideband through the brown wire...both ouputs are programmed at 0-5v = 10-20afr. I just checked with the multimeter, and its showing a full 5v with the car off, but the gauge in the ms dashboard reads nothing. It makes sense that I could have extreme interference from the grounds, but the multimeter says full rich at the stock wire going into the firewall.

yeah, working on the car is nice for a change. I'd like to tune some tomorrow before I go out of town until the new year.
hustler is offline  
Old 12-08-2007, 11:37 PM
  #31  
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
Default

and has anyone seen me middle connector? I put it somewhere last month where I knew I wouldn't lose it.

Should i go out there tomorro and run two wires, soldered at one ring connector? Where specifically on the TB should I put the gnd...I think a pic would help, because I can't seem to find the gnd strapping for the ecm. Anyone have a link to the pinouts for the factory ECM so I can do some multimeter work?


and just for the record, I have a perfectly flat open loop idle currently...lol.
hustler is offline  
Old 12-09-2007, 12:05 AM
  #32  
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,659
Total Cats: 134
Default

grounds are at the back of the head by the fuel rail. pinouts are at madracki
__________________
Chief of Floor Sweeping, DIYAutoTune.com & AMP EFI
Crew Chief, Car Owner & Least Valuable Driver, HongNorrthRacing

91 Turbo | 10AE Turbo | 01 Track Rat | #323 Mazda Champcar

Originally Posted by concealer404
Buy an MSPNP Pro, you'll feel better.
Ben is offline  
Old 12-09-2007, 12:07 AM
  #33  
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
Default

Originally Posted by Ben
grounds are at the back of the head by the fuel rail. pinouts are at madracki
I had this setup earlier today with the signal wire on the ground strap, and the heater on the valve cover. I'm thoroughly confused, and going to discuss this with my bartender now.
hustler is offline  
Old 12-09-2007, 12:12 AM
  #34  
Elite Member
iTrader: (12)
 
neogenesis2004's Avatar
 
Join Date: Aug 2006
Posts: 4,413
Total Cats: 20
Default

You want ALL the ground to go to the place, but you want to seperate the ones it tells you to by like an inch so you don't get any interference. If you ground them apart like you have then you are gonna have big ground disparity problems. For example, mine are both grounded to the 2 black ground wires at the harness. They both go to the same place, but I have them seperated by just putting them on the 2 different wires.
neogenesis2004 is offline  
Old 12-09-2007, 11:35 AM
  #35  
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
Default

shouldn't the o2 read full lean after doing a free air calibration, outside the exhaust? MS says its at 21.99 when the range should only go up to 19.99. "front bank o2 voltage is 3.04. Me thinks I didn't configure something properly in ms.
hustler is offline  
Old 12-09-2007, 02:15 PM
  #36  
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
Default

how will I know if its working correctly? I broke the rules and ran both leads to the same lug...so I expect a bad reading...but at least its reading something at this point.
hustler is offline  
Old 12-09-2007, 02:46 PM
  #37  
Elite Member
iTrader: (9)
 
Saml01's Avatar
 
Join Date: Jul 2007
Location: NYC
Posts: 5,710
Total Cats: 3
Default

You wont get a bad reading running it to the same lug. I had the same problems you described and called inovate about them. They told me to put the heater and system on the same lug,connect a MS ground to that lug as well.

Also, put the terminator into the IN plug on the LC1 for good measure.
Saml01 is offline  
Old 12-09-2007, 03:05 PM
  #38  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,494
Total Cats: 4,080
Default

Originally Posted by hustler
shouldn't the o2 read full lean after doing a free air calibration, outside the exhaust? MS says its at 21.99 when the range should only go up to 19.99. "front bank o2 voltage is 3.04. Me thinks I didn't configure something properly in ms.
how is you lc-1 outputing? 10-20:1? or default?

how is your configurator setup? 10-20:1 or default?


during freeair, it should show 20% O2 (in logworks), which it should not be ouputting any signal to MS at that point.
Braineack is offline  
Old 12-09-2007, 04:14 PM
  #39  
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
Default

Originally Posted by Braineack
how is you lc-1 outputing? 10-20:1? or default?

how is your configurator setup? 10-20:1 or default?


during freeair, it should show 20% O2 (in logworks), which it should not be ouputting any signal to MS at that point.
thanks, this is very useful so I don't have to waste time taking the o2 in and out.
hustler is offline  
Old 12-09-2007, 04:18 PM
  #40  
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
Default

noise or shitty tuning?
hustler is offline  


Quick Reply: all my stupid MS questions will go in this thread



All times are GMT -4. The time now is 02:39 PM.