O2 clamp but car is still running lean help please - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


E-Manage Post your questions about greddy e-manage installation and tuning here.

Reply
 
 
 
LinkBack Thread Tools
Old 11-04-2007, 11:48 PM   #1
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Aug 2007
Location: North Cackalackey
Posts: 716
Total Cats: 2
Default O2 clamp but car is still running lean help please

Installed the o2 clamp and the car still leans out on top end. i even get a hesitation around 4000rpm maybe even a detonation after it passes 4000rpm it pulls fine again. what could be the issue here. my log is below with the appropriate file.
log http://www.mediafire.com/?0ygjzlbugxe
file http://www.mediafire.com/?5dz44idiyfx

please help me out and if i need to make any changes let me know .
musanovic is offline   Reply With Quote
Old 11-05-2007, 12:15 PM   #2
Junior Member
iTrader: (1)
 
Join Date: Jan 2006
Location: in the middle of germany
Posts: 56
Total Cats: 0
Default

Maybe i have some ideas.

Don´t start an autotune run with "0"´s in the i/j map. You would run lean until the emu correct´s it, and you will get some nice detonations
Use something about "25" instead of "0" in the upper boost and rpm area.
It is going to run very rich, but the emu correct´s them down after some time.
And use an 1sec start time and 0,5% feedback amount in the a/f target setting.
Also i would recommend to disable your unused map´s, only for a clean overview.

Also change the voltage of your o2clamp to something about 0,38V.
An easy way to check the correct setting of the clamp is to activate the clamp in idle, set the tps in the afr target parameter to 1% (to start the autotune) and look at the corrections made by the emu in the i/j map. If the correction factor is about +/- 1 the clamp is set fine.

Which firmware are you using ?

Last edited by chico; 11-05-2007 at 12:29 PM.
chico is offline   Reply With Quote
Old 11-05-2007, 02:01 PM   #3
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Delicious and Moist.
Posts: 26,328
Total Cats: 1,926
Default

Quote:
Originally Posted by chico View Post
Don´t start an autotune run with "0"´s in the i/j map. You would run lean until the emu correct´s it, and you will get some nice detonations
+1 on this. The Autotune isn't magic- you are best using it to refine a rough map, rather than generating a new one from scratch. Here's my stab at a starting point for your I/J 1 map:




To generate this I simply put "80" in the leftmost (500) and rightmost (8000) cells of the +10 PSI row, then selected the whole area shown highlighted, and used the "interpolate 4 corners) function. In this setup it will probably run rich initially, but it gives the autotune a much easier job to do.
Quote:
And use an 1sec start time and 0,5% feedback amount in the a/f target setting.
Later on in the process perhaps. For now I think the 2% feedback is a good place to start. Initially he's going to be making very coarse corrections- once Autotune has had a chance to get most of the cells close, then dial it down to 0.5% to do some fine-tuning.

I'd also suggest that you fill out the portions of the A/F target map below 2,000 RPM, just for kicks.

Quote:
Also change the voltage of your o2clamp to something about 0,38V.
His clamp was pre-set to 0.37 volts when shipped. Should be good to go.
Quote:
An easy way to check the correct setting of the clamp is to activate the clamp in idle, set the tps in the afr target parameter to 1% (to start the autotune) and look at the corrections made by the emu in the i/j map. If the correction factor is about +/- 1 the clamp is set fine.
It's simpler than that. You don't need to tweak the TPS or AFR stuff, just go to the Aux Output map and manually switch all the cells to "ON" while observing the WBO2 sensor. When the clamp engages, the ECU will drive the idle mixture very rich. (It will eventually throw a CEL on an OBD-II system as well.)
Joe Perez is offline   Reply With Quote
Old 11-05-2007, 02:03 PM   #4
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Aug 2007
Location: North Cackalackey
Posts: 716
Total Cats: 2
Default

i am using the 2.13 update on the system. thanks for the info really appreciate it.
musanovic is offline   Reply With Quote
Old 11-05-2007, 02:24 PM   #5
Junior Member
iTrader: (1)
 
Join Date: Jan 2006
Location: in the middle of germany
Posts: 56
Total Cats: 0
Default

Quote:
Originally Posted by Joe Perez View Post
His clamp was pre-set to 0.37 volts when shipped. Should be good to go.
It's simpler than that. You don't need to tweak the TPS or AFR stuff, just go to the Aux Output map and manually switch all the cells to "ON" while observing the WBO2 sensor. When the clamp engages, the ECU will drive the idle mixture very rich. (It will eventually throw a CEL on an OBD-II system as well.)
You are absolutly right.
I only recommended my procedure because it shows a little bit the routines of the emu. The benefit is a little learning effect and practice with the emu.

But finally i have to say Joe, there is nothing more to say
I feel so unworthy now
Sometimes i´m angry about my "slow" english, it tooks a lot of time to write something. But it will get better.
chico is offline   Reply With Quote
Old 11-05-2007, 02:46 PM   #6
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Aug 2007
Location: North Cackalackey
Posts: 716
Total Cats: 2
Default

great help guys
How does my ignition map look
i have a decent size front mount and am running 93 octane. no water methanole yet. could that cause my detonation. or should i retard it a bit more. i am running a open wastegate and so i can not hear many pings or anything else. i want to run on the safe side.





for my friend chico vielen danke ich wohnte in deutschland 5 jahren Regensburg bereich.
musanovic is offline   Reply With Quote
Old 11-05-2007, 03:03 PM   #7
Elite Member
iTrader: (39)
 
Zabac's Avatar
 
Join Date: Sep 2007
Location: High Point NC
Posts: 4,854
Total Cats: 8
Default

alle deutschen, wie gehts? mein deutscht ist sehr schlecht...prost
i love this stuff
Zabac is offline   Reply With Quote
Old 11-05-2007, 05:01 PM   #8
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Delicious and Moist.
Posts: 26,328
Total Cats: 1,926
Default

Quote:
Originally Posted by chico View Post
But finally i have to say Joe, there is nothing more to say
I feel so unworthy now
Please, I did not mean to offend. I realize that I sometimes seem argumentative- it is not my intention to belittle anyone for offering advice. I think you are correct about learning and practice.

Also, you speak English much better than I speak German.
Joe Perez is offline   Reply With Quote
Old 11-05-2007, 05:05 PM   #9
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Aug 2007
Location: North Cackalackey
Posts: 716
Total Cats: 2
Default

so i am safe to assume if i retard timing 1.5 deg per psi that i should be on the safe side?
musanovic is offline   Reply With Quote
Old 11-05-2007, 05:09 PM   #10
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,900
Total Cats: 1,792
Default

Ich benutze einen ubersetzer aus meinem Deutsch, denn ich kann nicht lesen oder sprechen eine lecken werden.
Braineack is offline   Reply With Quote
Old 11-05-2007, 06:14 PM   #11
Elite Member
iTrader: (39)
 
Zabac's Avatar
 
Join Date: Sep 2007
Location: High Point NC
Posts: 4,854
Total Cats: 8
Default

das ist sehr gut scott, ich kann dich deutsch unterrichten und do kanst mir MS erklären...
i cheated a bit
Zabac is offline   Reply With Quote
Old 11-05-2007, 11:38 PM   #12
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Aug 2007
Location: North Cackalackey
Posts: 716
Total Cats: 2
Thumbs up

ok what can i say, you guys are life savers once again. drove the car and everything seamed to be great. A/f is great and the car runs strong. so strong that i don't have a clutch any more. Thanks for making it work i really appreciate everything. :bowd own:: bowdown::bowdo wn:
musanovic is offline   Reply With Quote
Old 11-06-2007, 12:54 AM   #13
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Delicious and Moist.
Posts: 26,328
Total Cats: 1,926
Default

Good to hear that it's working for you.

As an aside, I would suggest rescaling your maps. You don't need all those rows in the non-boosted area (two rows will handle it: one at -14.5, the next at -1) however I would suggest adding more headroom at the bottom. Even if you don't *plan* to ever run at 15 PSI, you should have some data there to cover yourself if the turbo occasionally spikes that high.
Joe Perez is offline   Reply With Quote
Old 11-06-2007, 01:00 AM   #14
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Aug 2007
Location: North Cackalackey
Posts: 716
Total Cats: 2
Default

Quote:
Originally Posted by Joe Perez View Post
Good to hear that it's working for you.

As an aside, I would suggest rescaling your maps. You don't need all those rows in the non-boosted area (two rows will handle it: one at -14.5, the next at -1) however I would suggest adding more headroom at the bottom. Even if you don't *plan* to ever run at 15 PSI, you should have some data there to cover yourself if the turbo occasionally spikes that high.
i will do that asap since the turbo does sometimes spike more than i want it to. I am using a super 60 and it just wants to spool, great thing though. thanks for the heads up Joe and should i just put the values for my fuel map you provided earlier in the 15 psi cell the number 80 and do the same i did for 10psi. thanks again.
-jasko
musanovic is offline   Reply With Quote
Old 11-06-2007, 01:08 AM   #15
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Delicious and Moist.
Posts: 26,328
Total Cats: 1,926
Default

Don't forget to rescale your A/F Target and Ignition maps as well.
Joe Perez is offline   Reply With Quote
Old 11-06-2007, 01:10 AM   #16
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Aug 2007
Location: North Cackalackey
Posts: 716
Total Cats: 2
Default

Quote:
Originally Posted by Joe Perez View Post
Don't forget to rescale your A/F Target and Ignition maps as well.
it would be a bad idea to forget but i am currently working on it Thanks for the heads up.
musanovic is offline   Reply With Quote
Old 11-06-2007, 02:41 AM   #17
Junior Member
iTrader: (1)
 
Join Date: Jan 2006
Location: in the middle of germany
Posts: 56
Total Cats: 0
Default

Quote:
Originally Posted by whaaamx5 View Post
das ist sehr gut scott, ich kann dich deutsch unterrichten und do kanst mir MS erklären...
i cheated a bit
Nicht schummeln, :gay: schummeln ist schwul.

Translate that

Let´s make a german ms guide, yeah, i would like that.
chico is offline   Reply With Quote
Old 11-06-2007, 02:46 AM   #18
Junior Member
iTrader: (1)
 
Join Date: Jan 2006
Location: in the middle of germany
Posts: 56
Total Cats: 0
Default

Quote:
Originally Posted by Braineack View Post
Ich benutze einen ubersetzer aus meinem Deutsch, denn ich kann nicht lesen oder sprechen eine lecken werden.
Translater from german to english are always funny.
Your translation at the end of the sentence means, that you would lick an chick. Nice
chico is offline   Reply With Quote
Old 11-06-2007, 05:00 AM   #19
Junior Member
iTrader: (1)
 
Join Date: Jan 2006
Location: in the middle of germany
Posts: 56
Total Cats: 0
Default

Quote:
Originally Posted by musanovic View Post
ok what can i say, you guys are life savers once again. drove the car and everything seamed to be great. A/f is great and the car runs strong. so strong that i don't have a clutch any more. Thanks for making it work i really appreciate everything. :bowd own:: bowdown::bowdo wn:
Nice, welcome to the dark side.

By the way, which base timing does your car have?
chico is offline   Reply With Quote
Old 11-06-2007, 10:05 AM   #20
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Aug 2007
Location: North Cackalackey
Posts: 716
Total Cats: 2
Default

Quote:
Originally Posted by chico View Post
Nice, welcome to the dark side.

By the way, which base timing does your car have?
i am assuming that i am running 10deg BTDC than am pulling 1deg per psi.
musanovic is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
TTE Build - Help me pick tires chrisn Race Prep 27 10-16-2015 06:12 PM
Mystery Engine Trouble. Halp, mt.net! vehicular General Miata Chat 12 09-14-2015 04:17 PM
VE values too low? compuw22c MEGAsquirt 4 09-12-2015 08:42 PM
Annoying little leaks AlwaysBroken Engine Performance 5 09-06-2015 01:53 AM
ME221 Now has Autotune and Long Term Fuel Trim Tables Motorsport-Electronics ECUs and Tuning 0 09-05-2015 09:02 AM


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 11:33 PM.