Notices
Series I Major Horsepower Upgrades This is the place to discuss Super Chargers and Turbos, Nitrous, Porting, etc

KONIG's Turbo Thread

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 02-02-2009, 12:00 AM
  #176  
Illudium Q-36 Space Moderator
iTrader: (1)
 
Kane's Avatar
 
Join Date: Jan 2007
Location: PCB
Posts: 6,364
Received 41 Likes on 31 Posts
Yeah the timing modifyer can be changed or the base map. I just don't know if that is for sure it; and or where to change it - I am pretty sure Jeff does though.
Old 02-02-2009, 12:05 AM
  #177  
turrrbo!
Thread Starter
iTrader: (4)
 
\\Konig\\'s Avatar
 
Join Date: May 2004
Location: Santa Barbara
Posts: 2,325
Received 3 Likes on 2 Posts
hoping jeff shares some info soon

he seems pretty busy at the moment, havent seen him post very much =/
Old 02-02-2009, 01:40 AM
  #178  
Boosted Kiwi
iTrader: (2)
 
Brettus's Avatar
 
Join Date: Apr 2006
Location: Y-cat-o NZ
Posts: 20,528
Received 1,494 Likes on 842 Posts
Originally Posted by Kane

BTW - from what Jeff said - fuel trims don't affect open loop any.
I don't think he said that - if he did i'm gunna give him a good argument
Old 02-02-2009, 01:41 AM
  #179  
Illudium Q-36 Space Moderator
iTrader: (1)
 
Kane's Avatar
 
Join Date: Jan 2007
Location: PCB
Posts: 6,364
Received 41 Likes on 31 Posts
I am 99.9856% sure. He mentioned it in the AP Racetuner thread i think... but I could also be wrong.
Old 02-02-2009, 01:46 AM
  #180  
Boosted Kiwi
iTrader: (2)
 
Brettus's Avatar
 
Join Date: Apr 2006
Location: Y-cat-o NZ
Posts: 20,528
Received 1,494 Likes on 842 Posts
well my experience is that ltft definately does affect afrs in closed and open loop . And i'm 100% sure of that , which beats you by 0.0144%
There are two numbers - one for closed loop and one for open .
Old 02-02-2009, 02:16 AM
  #181  
turrrbo!
Thread Starter
iTrader: (4)
 
\\Konig\\'s Avatar
 
Join Date: May 2004
Location: Santa Barbara
Posts: 2,325
Received 3 Likes on 2 Posts
how come this issue wasnt brought up before by anyone else?
Old 02-02-2009, 09:55 AM
  #182  
Boosted!!!
 
alienRX8's Avatar
 
Join Date: Apr 2008
Location: Puerto Rïco
Posts: 960
Likes: 0
Received 0 Likes on 0 Posts
maybe it didnt happen to anyone else?

idk, I know my car did the exact same opposite. When I first got my performance tune I was having 11.4 AFR at WOT now im having 10.9 to 11
Old 02-02-2009, 10:34 AM
  #183  
turrrbo!
Thread Starter
iTrader: (4)
 
\\Konig\\'s Avatar
 
Join Date: May 2004
Location: Santa Barbara
Posts: 2,325
Received 3 Likes on 2 Posts
lol id rather my do that then go lean! =O
Old 02-02-2009, 11:18 AM
  #184  
Illudium Q-36 Space Moderator
iTrader: (1)
 
Kane's Avatar
 
Join Date: Jan 2007
Location: PCB
Posts: 6,364
Received 41 Likes on 31 Posts
I would really love to see before and after timing logs.... I wonder if it can make that much difference all by itself.

In open loop - the car aims for the Target AFR; but never gets to check if it is correct or not (no feedback); so even if trims built... a 2% LTFT should throw the AFR off by more than a few hundredths.... 10% Fuel = roughly 1 AFR point.
Old 02-02-2009, 01:06 PM
  #185  
Boosted Kiwi
iTrader: (2)
 
Brettus's Avatar
 
Join Date: Apr 2006
Location: Y-cat-o NZ
Posts: 20,528
Received 1,494 Likes on 842 Posts
Originally Posted by Kane
10% Fuel = roughly 1 AFR point.
yesterday I saw AFRs change from mid 11s down to high 10s with LTFT change of only 3% . But i do have 480cc injectors in there that i have made no attempt to scale so .......

Last edited by Brettus; 02-02-2009 at 01:08 PM.
Old 02-02-2009, 01:12 PM
  #186  
Illudium Q-36 Space Moderator
iTrader: (1)
 
Kane's Avatar
 
Join Date: Jan 2007
Location: PCB
Posts: 6,364
Received 41 Likes on 31 Posts
Wow.... 3% only? I wonder if there are some other modifyers I am not familiar with yet...

I mean if your AFR is 11:1 and you reduce your fuel by 3% 1* .03 = .97 so 11:.97 = 11.34 AFR....

See?
Old 02-02-2009, 01:18 PM
  #187  
Boosted Kiwi
iTrader: (2)
 
Brettus's Avatar
 
Join Date: Apr 2006
Location: Y-cat-o NZ
Posts: 20,528
Received 1,494 Likes on 842 Posts
yes i see the math - but is does not correspond to what i've seen and it seems what Konig is seeing so something else is going on as well .
Old 02-02-2009, 01:21 PM
  #188  
Illudium Q-36 Space Moderator
iTrader: (1)
 
Kane's Avatar
 
Join Date: Jan 2007
Location: PCB
Posts: 6,364
Received 41 Likes on 31 Posts
I agree....that is why I am wondering about timing... retarding effectively richens the AFR up and advancing does the opposite....

So if you tune hot - then run cold... you'll be lean (assuming timing changes for the temps); and vice versa....
Old 02-02-2009, 02:04 PM
  #189  
Boosted Kiwi
iTrader: (2)
 
Brettus's Avatar
 
Join Date: Apr 2006
Location: Y-cat-o NZ
Posts: 20,528
Received 1,494 Likes on 842 Posts
I wonder if it is not a linear relationship .
IE LTFT is adjusted in closed loop at very low maf values . For N/A this may be ok but when you go FI the relationship to low maf situations is not so predictable .
Old 02-02-2009, 02:12 PM
  #190  
Illudium Q-36 Space Moderator
iTrader: (1)
 
Kane's Avatar
 
Join Date: Jan 2007
Location: PCB
Posts: 6,364
Received 41 Likes on 31 Posts
I honestly don't know... it would stand to reason that it should be linear with regards to fuel; since air is air and the fuel trims are really more for the injector tolerances and atomization issues........but I am just speaking out of my **** - I really can't say 100%

Last edited by Kane; 02-02-2009 at 02:14 PM.
Old 02-08-2009, 12:50 AM
  #191  
turrrbo!
Thread Starter
iTrader: (4)
 
\\Konig\\'s Avatar
 
Join Date: May 2004
Location: Santa Barbara
Posts: 2,325
Received 3 Likes on 2 Posts
okay well my situation has changed. im still on the same map, but my car is now going riccchh.

in any gear now, when i give it enough throttle to go into boost the AFRs drop down to 11.1 and stay there the ENTIRE time i am in boost. i have 40,000 miles on the original coils, is this the sign that its time for new coils?

no idle problems except for the occasional blip when the rpms come down to idle. car runs fine, sometimes it stumbles a bit if i give it gas too quickly to go into boost (probably from it going too rich?) but after that it gives no problems with boost.

any ideas?
Old 02-08-2009, 03:01 PM
  #192  
Administrator
iTrader: (7)
 
Jedi54's Avatar
 
Join Date: Mar 2004
Location: The Dark Side
Posts: 22,400
Received 2,652 Likes on 1,899 Posts
40k on stock coils is a LOT. Not sure if that's causing your problem (probably not) but would be a good idea to swap those out.
Old 02-08-2009, 04:56 PM
  #193  
sold the 8... :(
iTrader: (7)
 
05rex8's Avatar
 
Join Date: Feb 2008
Posts: 4,917
Likes: 0
Received 0 Likes on 0 Posts
interesting....what happens when you reflash the map?
Old 02-08-2009, 11:53 PM
  #194  
turrrbo!
Thread Starter
iTrader: (4)
 
\\Konig\\'s Avatar
 
Join Date: May 2004
Location: Santa Barbara
Posts: 2,325
Received 3 Likes on 2 Posts
i havent reflashed it. i kinda like having it be in the 11's. tonight it was in the mid 11's. i dont know wth is going on anymore it adjusts so much so fast...lol...

but yeah i asked gregs and he said its probably not the coils either...probably the map just going physcho again.
Old 02-09-2009, 12:00 AM
  #195  
Administrator
iTrader: (7)
 
Jedi54's Avatar
 
Join Date: Mar 2004
Location: The Dark Side
Posts: 22,400
Received 2,652 Likes on 1,899 Posts
I think a reflash would be a good idea. If the PCM didn't properly learn the map, maybe that's part of the issue? (just thinking out loud here)
Old 02-09-2009, 12:03 AM
  #196  
turrrbo!
Thread Starter
iTrader: (4)
 
\\Konig\\'s Avatar
 
Join Date: May 2004
Location: Santa Barbara
Posts: 2,325
Received 3 Likes on 2 Posts
well ive reflashed it when the car was running lean, then i reflashed it a few more times after that. then one day i turn on my car and go into boost and see 11's!
Old 02-09-2009, 12:04 AM
  #197  
sold the 8... :(
iTrader: (7)
 
05rex8's Avatar
 
Join Date: Feb 2008
Posts: 4,917
Likes: 0
Received 0 Likes on 0 Posts
I am clueless on this one. Hopefully someone else smarter than me can figure this out. lol.
Old 02-09-2009, 12:05 AM
  #198  
turrrbo!
Thread Starter
iTrader: (4)
 
\\Konig\\'s Avatar
 
Join Date: May 2004
Location: Santa Barbara
Posts: 2,325
Received 3 Likes on 2 Posts
i have data logs of the rich condition

http://implux.net/~alz0rz/o/

the are the last two files (named runningrich), can you guys check them out real quick?

thanks again alzors!!!!
Old 02-09-2009, 12:49 AM
  #199  
Illudium Q-36 Space Moderator
iTrader: (1)
 
Kane's Avatar
 
Join Date: Jan 2007
Location: PCB
Posts: 6,364
Received 41 Likes on 31 Posts
I want before and after with trims, MAF g/sec and timing....
Old 02-09-2009, 01:03 AM
  #200  
turrrbo!
Thread Starter
iTrader: (4)
 
\\Konig\\'s Avatar
 
Join Date: May 2004
Location: Santa Barbara
Posts: 2,325
Received 3 Likes on 2 Posts
sorry ill go do some more logs when i get the chance

its raining right now so yeah...

i only enable the items that mm usually needs for his tuning so thats why some of the options didnt show


You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: KONIG's Turbo Thread



All times are GMT -5. The time now is 09:02 AM.