Lumpy idle. - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


MEGAsquirt A place to collectively sort out this megasquirt gizmo

Reply
 
 
 
LinkBack Thread Tools
Old 06-25-2008, 10:42 PM   #1
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Aug 2007
Location: Southern Indiana
Posts: 1,371
Total Cats: -1
Default Lumpy idle.

So, my idle is lumpy and very lean. My wideband(uego) often pegs lean during idle. I richened up the idle cells and it smoothed out a little bit but in order to richen it up, I had to change the VE idle cells to over 100% and my idle afrs were around 13ish. Anybody have any tips?

Thanks in advance,
Wes
Attached Files
File Type: zip lumpy.zip (16.3 KB, 29 views)
wes65 is offline   Reply With Quote
Old 06-25-2008, 11:21 PM   #2
Junior Member
iTrader: (2)
 
Join Date: Nov 2006
Location: N/A
Posts: 360
Total Cats: 0
Default

Use the hi-res code if you're not already.
mikeflys1 is offline   Reply With Quote
Old 06-26-2008, 12:35 AM   #3
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,038
Total Cats: 407
Default

what size injectors? what's your timing at idle?
y8s is offline   Reply With Quote
Old 06-26-2008, 10:42 AM   #4
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Aug 2007
Location: Southern Indiana
Posts: 1,371
Total Cats: -1
Default

Quote:
Originally Posted by y8s View Post
what size injectors? what's your timing at idle?
oh, **** sorry i thought it was in my sig. 460's. My msq is there, im not sure about the timing.
wes65 is offline   Reply With Quote
Old 06-26-2008, 10:43 AM   #5
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Aug 2007
Location: Southern Indiana
Posts: 1,371
Total Cats: -1
Default

So, i flashed the HR code and it leaned everything to hell and back. I had to increase the entire VE table by 25% to make the damn thing drivable. I am still getting 14's under boost so thats no good. I drove my other car to work today and i will be working on it when i get home. I also have a random miss. I will be searching on problems with HR.
wes65 is offline   Reply With Quote
Old 06-26-2008, 10:52 AM   #6
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Aug 2007
Location: Southern Indiana
Posts: 1,371
Total Cats: -1
Default

okay, either i suck *** at searching or other people are not having this problem. I flashed to the newest HR code and now i have a random misfire. It happens at all different times. I havent gone into boost because now, my boosted cells are untuned. I will log it when i get home.
wes65 is offline   Reply With Quote
Old 06-26-2008, 11:09 AM   #7
Junior Member
iTrader: (1)
 
Join Date: Apr 2008
Location: Bristol
Posts: 442
Total Cats: 0
Default

Do you have the cap mod to eliminate noise/interference on the tach input? solder a .1F capacitor between JS8 and Ground to act as a filter. This eliminates random misses and allows you to use Hi-Res code successfully.

As for going lean as **** it happens to everyone when switching to high res, try scaling the whole table if you havn't already and make sure the req fuel value is correct for your 460's
Duckie_uk is offline   Reply With Quote
Old 06-26-2008, 11:24 AM   #8
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Aug 2007
Location: Southern Indiana
Posts: 1,371
Total Cats: -1
Default

Quote:
Originally Posted by Duckie_uk View Post
Do you have the cap mod to eliminate noise/interference on the tach input? solder a .1F capacitor between JS8 and Ground to act as a filter. This eliminates random misses and allows you to use Hi-Res code successfully.

As for going lean as **** it happens to everyone when switching to high res, try scaling the whole table if you havn't already and make sure the req fuel value is correct for your 460's

I was REALLY hoping i wouldnt have to open up the mspnp.
wes65 is offline   Reply With Quote
Old 06-26-2008, 11:30 AM   #9
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Aug 2007
Location: Southern Indiana
Posts: 1,371
Total Cats: -1
Default

wes65 is offline   Reply With Quote
Old 06-26-2008, 12:41 PM   #10
Supporting Vendor
 
Matt Cramer's Avatar
 
Join Date: Sep 2006
Posts: 2,266
Total Cats: 51
Default

Quote:
Originally Posted by wes65 View Post
I was REALLY hoping i wouldnt have to open up the mspnp.
Check for the revision letter under the MSPNP on the label - it may already have the cap mod. What revision do you have?
Matt Cramer is offline   Reply With Quote
Old 06-26-2008, 12:49 PM   #11
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Aug 2007
Location: Southern Indiana
Posts: 1,371
Total Cats: -1
Default

hmmm i bought it in august or september of '07 i know it was not long after it came out. I dont have the car with me here at work. Does the date of purchase tell you anything?
wes65 is offline   Reply With Quote
Old 06-26-2008, 12:51 PM   #12
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Aug 2007
Location: Southern Indiana
Posts: 1,371
Total Cats: -1
Default

http://www.radioshack.com/product/in...entPage=family

oh, THATS what i need, right? (crosses fingers hoping the cap mod is already done)
wes65 is offline   Reply With Quote
Old 06-26-2008, 12:52 PM   #13
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Aug 2007
Location: Southern Indiana
Posts: 1,371
Total Cats: -1
Default

Order Number: 14597
Detailed Invoice: https://www.diyautotune.com/catalog/...order_id=14597
Date Ordered: Tuesday 04 September, 2007
wes65 is offline   Reply With Quote
Old 06-26-2008, 01:15 PM   #14
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Aug 2007
Location: Southern Indiana
Posts: 1,371
Total Cats: -1
Default

Oh, one more thing, How long is the warranty on the mspnp anyway? And would me doing the cap mod, void the warranty?
wes65 is offline   Reply With Quote
Old 06-26-2008, 01:35 PM   #15
Elite Member
iTrader: (10)
 
IcantDo55's Avatar
 
Join Date: Apr 2007
Location: VA Beach
Posts: 1,764
Total Cats: 18
Default

Quote:
Originally Posted by wes65 View Post
http://www.radioshack.com/product/in...entPage=family

oh, THATS what i need, right? (crosses fingers hoping the cap mod is already done)

Thats the cap. I put that in and it solved all my misfire problems. Was and easy install.
IcantDo55 is offline   Reply With Quote
Old 06-26-2008, 03:19 PM   #16
jwx
Junior Member
 
Join Date: Sep 2007
Location: North of Atlanta
Posts: 78
Total Cats: 0
Default

Yes, that should work just fine(the second one) You could also send it back and have us do it. It would take a bit of turn around time though.

It won't void your warranty as long as the mod didn't cause the problem.
jwx is offline   Reply With Quote
Old 06-26-2008, 03:38 PM   #17
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Aug 2007
Location: Southern Indiana
Posts: 1,371
Total Cats: -1
Default

when did they start being made with the cap mod already done?
wes65 is offline   Reply With Quote
Old 06-26-2008, 04:11 PM   #18
jwx
Junior Member
 
Join Date: Sep 2007
Location: North of Atlanta
Posts: 78
Total Cats: 0
Default

Jan 08. You ordered yours before then it looks like.

If you did want for us to do the mod, just send us an email, and we'll get you fixed right up.
jwx is offline   Reply With Quote
Old 06-26-2008, 04:32 PM   #19
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Aug 2007
Location: Southern Indiana
Posts: 1,371
Total Cats: -1
Default

yeah, i bought it in sept 07
wes65 is offline   Reply With Quote
Old 06-27-2008, 12:01 PM   #20
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Aug 2007
Location: Southern Indiana
Posts: 1,371
Total Cats: -1
Default

Okay, i have not done the cap mod yet, it is coming. However, here is a log. The SecL DOES go back to 0 when i get the miss. Is this normal? (look at 214)
Attached Files
File Type: zip miss.zip (12.7 KB, 44 views)
wes65 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
Compression test results Colipto General Miata Chat 3 09-11-2015 02:44 PM
Problems with your MS, turbo, and/or Miata got ya down? paul Insert BS here 9 07-10-2008 09:59 AM
Overheating | Bad Idle | Backfiring = the suck Braineack General Miata Chat 98 08-24-2007 05:31 PM
hmm lumpy idle after friend touched throttle penpen989 Prefabbed Turbo Kits 34 10-13-2006 11:33 PM


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 03:28 AM.