Notices
DIY Turbo Discussion greddy on a 1.8? homebrew kit?

Megasquirt PnP doesn't PnP nice

Thread Tools
 
Search this Thread
 
Old Apr 4, 2020 | 02:02 PM
  #1  
Okaydenami's Avatar
Thread Starter
Newb
 
Joined: Apr 2020
Posts: 1
Total Cats: 0
From: Texas
Default Megasquirt PnP doesn't PnP nice

Hey guys, my boyfriend has a turbo '96, ran reliably enough but obviously it needs to be tuned. Finally got hands on a MS PnP ECU aaaand it doesn't want to idle. Had a number of people remote in and look at everything, they say the values look good enough to idle.

The car starts and runs great at a cold start but when it gets to temp, it doesn't want to continue idling and the AFR readings go off the chart. Maybe the startup enrichment is too high? Fairly new to the tuning game. Can't find any base maps just to get me started for the '96, the ones he can find don't want to jive with the ECU's software. Reading the manual, reading hundreds of other threads, and watching countless YouTube videos has only helped so much, so here I am trying my best to help him any way I can.
No idea what we're doing as far as tuning software goes, any support and help would be greatly appreciated. Spending hundreds of dollars to have some other schmuck do the whole thing really isn't an option.

Note: He does not have a innercooler yet but the car is running without a hood for now and the intake temps are good.
Old Apr 4, 2020 | 02:31 PM
  #2  
Reverant's Avatar
Elite Member
iTrader: (10)
 
Joined: Jun 2006
Posts: 6,019
Total Cats: 368
From: Athens, Greece
Default

Always tune the idle AFR when it it is the hottest. This may make the engine want to idle at 12:1 or something but this is ok as it won't make the car have a bad idle or bog. So drive it in traffic and let it really heatsoak, then tune so that it has a 14.7 idle while heatsoaked. When cold, let the EGO control take out fuel to bring it back to 14.7 (much better than getting the EGO trying to catchup by adding fuel, which is a losing game).
Old Apr 4, 2020 | 02:32 PM
  #3  
curly's Avatar
Cpt. Slow
iTrader: (25)
 
Joined: Oct 2005
Posts: 15,168
Total Cats: 1,393
From: Oregon City, OR
Default

Attach a tune and log of it warming up, then we can help.
Old Apr 8, 2020 | 08:24 AM
  #4  
sixshooter's Avatar
Moderator
iTrader: (12)
 
Joined: Nov 2008
Posts: 22,155
Total Cats: 3,536
From: Tampa, Florida
Default

Originally Posted by curly
Attach a tune and log of it warming up, then we can help.
This
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
slammedkouki
MEGAsquirt
3
Nov 18, 2013 03:29 PM
Cody Strife
ECUs and Tuning
17
Mar 22, 2010 08:24 AM
compuatic
MEGAsquirt
9
May 25, 2008 10:56 AM
Saml01
MEGAsquirt
9
Jan 3, 2008 09:03 PM




All times are GMT -4. The time now is 01:52 AM.