MEGAsquirt A place to collectively sort out this megasquirt gizmo

PnP, Target AFRs, VE table scale, MLV delay

Thread Tools
 
Search this Thread
 
Old 01-27-2008, 04:39 PM
  #1  
Junior Member
Thread Starter
 
richard_ha's Avatar
 
Join Date: Jan 2007
Posts: 188
Total Cats: 0
Default PnP, Target AFRs, VE table scale, MLV delay

They seem to be incredibly rich, is there a reason for this?

Also...
Also the lowest MAP go from 19, 26, 35
My car idles at 33kPa is that not right? I don't really need the 19kPa row at all do I?


Also....
The WB delay that you can set from 1,2,3,4 in MLV, my WB is in the decat pipe do what will I need this set to ideally?

Thanks.
Attached Thumbnails PnP, Target AFRs, VE table scale, MLV delay-pnpsft.jpg  
richard_ha is offline  
Old 01-27-2008, 05:23 PM
  #2  
Elite Member
iTrader: (21)
 
paul's Avatar
 
Join Date: Jun 2006
Location: Point Pleasant, NJ
Posts: 2,957
Total Cats: 2
Default

who the **** set that AFR table? thats stupid rich. maybe a conversion error from voltage to AFR.

the reason you need lower than 33 is for when you are decelerating in gear. you kpa will go down that low. can help prevent popping in exhaust

i have mine set at 1 and its 36" from the turbo.
paul is offline  
Old 01-27-2008, 05:44 PM
  #3  
Elite Member
iTrader: (13)
 
cjernigan's Avatar
 
Join Date: Oct 2006
Location: Atlanta, GA
Posts: 8,091
Total Cats: 7
Default

They might set those up to be safe?? Go ahead and adjust them to values that suit your needs better.
When you let off the gas while cruising your car will see like 14 kpa while in heavy vacuum.
My car idles at more like 26 kpa, 33 is ok.
The delay doesn't make much difference when you let MLV adjust things, you can play with it though.
cjernigan is offline  
Old 01-27-2008, 05:49 PM
  #4  
Junior Member
Thread Starter
 
richard_ha's Avatar
 
Join Date: Jan 2007
Posts: 188
Total Cats: 0
Default

When I take my foot off though it cuts all the fueling becuase of the over run so they arent really needed are they?

I'll leave them there anyway as I suppose they aren't doing any harm other than MLV is setting them stupidly rich though,
richard_ha is offline  
Old 01-27-2008, 06:04 PM
  #5  
Elite Member
iTrader: (13)
 
cjernigan's Avatar
 
Join Date: Oct 2006
Location: Atlanta, GA
Posts: 8,091
Total Cats: 7
Default

Filter them out with the advanced settings in MLV. You can tell it to only adjust a certain rpm/map range easily.
cjernigan is offline  
Old 01-27-2008, 06:56 PM
  #6  
Junior Member
Thread Starter
 
richard_ha's Avatar
 
Join Date: Jan 2007
Posts: 188
Total Cats: 0
Default

Right, I'm finally getting there.

Because I have a wideband o2 sensor I set this to 0.....?

"Open Loop Mode" : "Correction: kPa" : "go Open Loop @KPa : 0 "

This means it will stay on closed loop always and use my AFR Target tables?
richard_ha is offline  
Old 01-27-2008, 07:52 PM
  #7  
Elite Member
iTrader: (13)
 
cjernigan's Avatar
 
Join Date: Oct 2006
Location: Atlanta, GA
Posts: 8,091
Total Cats: 7
Default

You want it to go open loop at like 60-80 kpa, your choice. Closed loop is good for cruising and low load but when getting into boost and running high load you want it to run off your tuned fuel map.
cjernigan is offline  
Old 01-27-2008, 08:08 PM
  #8  
Junior Member
Thread Starter
 
richard_ha's Avatar
 
Join Date: Jan 2007
Posts: 188
Total Cats: 0
Default

OK thanks.

Itching to drive my car again
richard_ha is offline  
Old 01-28-2008, 05:24 AM
  #9  
Elite Member
iTrader: (1)
 
richyvrlimited's Avatar
 
Join Date: Jun 2006
Location: Warrington/Birmingham
Posts: 2,642
Total Cats: 42
Default

Originally Posted by richard_ha
When I take my foot off though it cuts all the fueling becuase of the over run so they arent really needed are they?
High rev low load i.e. around a corner on a circuit will see you in high vac areas.

you can try removing them but I bet you a tenner drivability will suck afterwards.

There's interpolation on all the cells anyway so you lose nothing in reality.
richyvrlimited is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
emilio700
Wheels and Tires
151
06-02-2017 02:36 PM
Big_gumby
WTB
0
09-30-2015 03:34 PM
Goldwar
DIY Turbo Discussion
2
09-29-2015 09:20 AM
itsMikey
MSPNP
3
09-28-2015 06:40 AM
Motorsport-Electronics
ECUs and Tuning
0
09-05-2015 08:02 AM



Quick Reply: PnP, Target AFRs, VE table scale, MLV delay



All times are GMT -4. The time now is 05:49 PM.