MEGAsquirt A place to collectively sort out this megasquirt gizmo

DIYPNP map sensor spikes/flutter - problems

Thread Tools
 
Search this Thread
 
Old 06-26-2015, 08:01 AM
  #1  
Newb
Thread Starter
 
spidy's Avatar
 
Join Date: Nov 2010
Location: aachen, Germany
Posts: 24
Total Cats: -2
Default DIYPNP map sensor spikes/flutter - problems

connection problem solved!

now its time for some new problems

my map-sensor is reading sometimes peakes/flutters. especially with the acceleration enrichment table (disabled it now).

~2200-3000 rpm its reading +/- 200 kpa/s while just holding throttle (no acceleration - while driving - or just in neutral).

on boost - theres flutter too +/- 150 - 200kpa.

will upload my MSQ and my log later.

Last edited by spidy; 07-01-2015 at 10:12 AM.
spidy is offline  
Old 06-26-2015, 08:39 AM
  #2  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,493
Total Cats: 4,080
Default

post your msq. you probably fubared a setting or possible fubared the firmware.
Braineack is offline  
Old 06-26-2015, 11:00 AM
  #3  
Newb
Thread Starter
 
spidy's Avatar
 
Join Date: Nov 2010
Location: aachen, Germany
Posts: 24
Total Cats: -2
Default

this is my latest msq - thx for help
Attached Files
File Type: msq
testmap.msq (84.2 KB, 147 views)
spidy is offline  
Old 06-26-2015, 07:58 PM
  #4  
Newb
Thread Starter
 
spidy's Avatar
 
Join Date: Nov 2010
Location: aachen, Germany
Posts: 24
Total Cats: -2
Default

decided to try a reboot with the boot jumper and a new firmware tomorrow... x
spidy is offline  
Old 06-28-2015, 01:37 PM
  #5  
Newb
Thread Starter
 
spidy's Avatar
 
Join Date: Nov 2010
Location: aachen, Germany
Posts: 24
Total Cats: -2
Default

so Problem solved... new firmware (3.2.5 tested - cause can´t find the 3.1.0 :/) works again
spidy is offline  
Old 07-01-2015, 05:14 PM
  #6  
Newb
Thread Starter
 
spidy's Avatar
 
Join Date: Nov 2010
Location: aachen, Germany
Posts: 24
Total Cats: -2
Default

so here´s a picture of my logfile - map spikes :/


Attached Thumbnails DIYPNP map sensor spikes/flutter - problems-80-neue_bitmap_de339b68e00c953c8c4c8c75d4b5b5edae1dc78c.jpg  
spidy is offline  
Old 07-02-2015, 08:09 AM
  #7  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,493
Total Cats: 4,080
Default

where's your MAP sensor plugged in?
Braineack is offline  
Old 07-02-2015, 10:14 AM
  #8  
Newb
Thread Starter
 
spidy's Avatar
 
Join Date: Nov 2010
Location: aachen, Germany
Posts: 24
Total Cats: -2
Default

at the rear port at my manifold (the one you can see near the CAS)

maybe the problem caused by my hose adapter? the DIYPNP got a 3mm hose fitted at the map sensor - the manifold got a 5mm hose. fitted with an hose-adapter
spidy is offline  
Old 07-02-2015, 01:16 PM
  #9  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,493
Total Cats: 4,080
Default

thats actually the absolute worst place to put it.

the TB is the second worst.



tee it off the FPR.
Braineack is offline  
Old 07-02-2015, 02:56 PM
  #10  
Newb
Thread Starter
 
spidy's Avatar
 
Join Date: Nov 2010
Location: aachen, Germany
Posts: 24
Total Cats: -2
Default

ok thx - i´ll try that.

at my nissans the after TB slots works fine.

thx for help :-)
and sorry for my bad english :/
spidy is offline  
Old 07-12-2015, 06:30 AM
  #11  
Newb
Thread Starter
 
spidy's Avatar
 
Join Date: Nov 2010
Location: aachen, Germany
Posts: 24
Total Cats: -2
Default

so its better - but still on WOT some points with AE and decelaration :/ sometimes with lean spikes

changed ignition cables -> new magnecore (red) and the pressure hose tee of the FPR port.

maybe other problems? VE and ignition maps crappy?


edit: turned my AE way higher - 0,8ms @ 350kp/s is the first point
Attached Thumbnails DIYPNP map sensor spikes/flutter - problems-map-sensor-ae-problem.jpg  
spidy is offline  
Old 07-12-2015, 12:09 PM
  #12  
Elite Member
iTrader: (3)
 
deezums's Avatar
 
Join Date: May 2014
Location: Kansas
Posts: 3,146
Total Cats: 201
Default

I don't see a problem, other than crappy tuning. I'd never settle for a VE map that rough, especially near low map and idle. I can't imagine why it has lean or rich spikes with adjacent cells more than 50% out from each other.
deezums is offline  
Old 07-12-2015, 05:55 PM
  #13  
Newb
Thread Starter
 
spidy's Avatar
 
Join Date: Nov 2010
Location: aachen, Germany
Posts: 24
Total Cats: -2
Default

too much autotune at low kpa-cells :/ need to smooth this cells and finetune the AE :/

Last edited by spidy; 07-12-2015 at 06:45 PM.
spidy is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Full_Tilt_Boogie
Build Threads
84
04-12-2021 04:21 PM
The Gleas
MEGAsquirt
3
10-01-2015 09:30 AM
mx592
Suspension, Brakes, Drivetrain
1
10-01-2015 12:45 AM



Quick Reply: DIYPNP map sensor spikes/flutter - problems



All times are GMT -4. The time now is 01:58 PM.