Got some logs here, Homebrew buddies please help

BLK01S4::HB B!SH · 05-30-2006, 09:21 AM

Positive critism only please ... If you look at the O2s why do they start off so lean then end up where they are suppose to be relatively? Is that all dependent on the fueling requested by the software? I am going to add just a little bit more fuel see what happens what do you guys think?

My Setup:
GIAC X
4BAR FPR
440c Greentops Injectors
90mm MAF Hitachi
K04/RS6 ~15psi
R$4 Airbox w/holes stock filter

Ah10@WMS · 05-30-2006, 09:35 AM

eigenvector · 05-30-2006, 09:37 AM

BLK01S4::HB B!SH · 05-30-2006, 09:48 AM

BLK01S4::HB B!SH · 05-30-2006, 09:50 AM

Do you know why at low RPMs it starts off at .82 ? Shouldn't it be where the O2s are at redline the entire time? or is my thinking wrong?

eigenvector · 05-30-2006, 09:58 AM

k04/rs6north · 05-30-2006, 10:05 AM

- this ramping of the O2 curve from leaner to richer is exactly what is seen in AWE's K04 software

- if you check the EPL dyno day charts of my AWE K04 Allroad you will see that the wideband curve starts at 13.0 a/f at peak tq and ends up at 11.5 a/f at redline (it follows as linear path from 13.0 to 11.5)

- as I don't have X chip tuning expertise, but remember Jordon's many posts on his homebrew setup using the X chip, his O2 curve would stay absolutely straight from 4000 to 7000rpms (did not rise as you have shown)

- so some searching to find out which X chip version you have and see if that is the version that most of the homebrew guys use

- what is you MBC setup (stand alone or parallel)?

BLK01S4::HB B!SH · 05-30-2006, 10:06 AM

so, maybe I used the wrong word when I said low .. Something aint right <scratches head>

BLK01S4::HB B!SH · 05-30-2006, 10:10 AM

I will crack the lid open tonight and see what version it is.. From what piggy told me its the last soldered version before they went flash if that does anything for you. I am running a MBC alone no N75. There is no way of adjusting that fuel curve to jump up richer huh?

k04/rs6north · 05-30-2006, 10:25 AM

- just remember that these O2 readings are not wibeband readings and that you are tweaking on imperfect information
- I can tell you that on my car, O2=.865 was approximately 13.0 a/f as confirmed by a wideband on EPL's dyno
- as my car has been programmed with an agressive boost profile (26psi to 23.24psi) the car has been programmed with a much richer fuel load (11.0 to 11.5 a/f from peak torque to redline) this equates on my car to .88-.90 O2 values

- much smaller changes can be using the accelerating channel

05-30-2006, 09:21 AM	#1
BLK01S4::HB B!SH AudiWorld Super User Account #: 52597 Join Date: Mar 2003 Posts: 5,924	Got some logs here, Homebrew buddies please help Positive critism only please ... If you look at the O2s why do they start off so lean then end up where they are suppose to be relatively? Is that all dependent on the fueling requested by the software? I am going to add just a little bit more fuel see what happens what do you guys think? My Setup: GIAC X 4BAR FPR 440c Greentops Injectors 90mm MAF Hitachi K04/RS6 ~15psi R$4 Airbox w/holes stock filter __________________ Stage III Tip : ??? FATS (Race Gas) 3.43 Average Pump gas --------------- Fastest Tiptronic! ET: 12.259@118.25mph :) "Turbos are usually the cheapest/easiest way to add power - Posted by: Corrado79 on 2008-05-21 13:22:49 "Amazing that he could maintain a wedgie and talk out of his ass at the same time. That's one skill he CAN lay claim to. - Skydive@W?? 2007-12-18" --- "good I just added you to my " bitch " VIP list ." -Professional customer service - SIMPPLY@WMS 2007-12-17 --- "i tried the propane file on butane and it blew my ing grill up." - mjtaylor::pipedream 2007-08-23 14:21:46 --- "It takes a problem which we don't have and doesn't even solve it" - Mirror\|rorriM on 2006-09-26 --- "but yeah you want open loop when you go wot ;-)" - PiggieSmalls on 2006-11-10 --- $$$$$$$$$$$$$$$$$ = !@$#!#!!@&%! ----

05-30-2006, 09:35 AM	#2
Ah10@WMS AudiWorld Super User Account #: 9327 Join Date: Aug 2000 Posts: 7,630	Are you on the lean side sir? __________________ WMS: 818-997-6500 ASP:856-772-9500 \|\| ASP Custom Tuned Stage 3 \|\| 710P \|\| Piggie DP \|\| ASP 89mm Truedual \|\| ASP TSB \|\| APR Boost Gauge \|\| RS4 Grille \|\| \|\| AWE Intercooler \|\| C M Stage 4, 6 puck & LWFW \|\| ASP Motor Mount \|\| RS4 Tranny Mount\|\| StaSIS Motorsport Ohlins \|\| \|\| 18" Work W-ITS 901 \|\| 245/35/18 ContiSport3 \|\| Ecode \|\| Modded RS4 Bumper \|\| StaSIS Motorsport Alcon 6pot 355 \|\| WMS Stage III: 3.54 fats on Pump 3.25 fats on Race gas both runs were on pump file 3.06 on East Coast Pump Gas/Race File 2.93 on East Coast Pump Gas/Race File in 40f weather

05-30-2006, 09:37 AM	#3
eigenvector AudiWorld Senior Member Account #: 103335 Join Date: Jan 2006 Posts: 2,009	add fuel.. try to get aroud .875 voltages __________________ (Audi)(S4)(01.5)(Silver)(90k)(Stage 2+) (GIAC)(710N)

05-30-2006, 09:48 AM	#4
BLK01S4::HB B!SH AudiWorld Super User Account #: 52597 Join Date: Mar 2003 Posts: 5,924	ya I'm playing around with this .. __________________ Stage III Tip : ??? FATS (Race Gas) 3.43 Average Pump gas --------------- Fastest Tiptronic! ET: 12.259@118.25mph :) "Turbos are usually the cheapest/easiest way to add power - Posted by: Corrado79 on 2008-05-21 13:22:49 "Amazing that he could maintain a wedgie and talk out of his ass at the same time. That's one skill he CAN lay claim to. - Skydive@W?? 2007-12-18" --- "good I just added you to my " bitch " VIP list ." -Professional customer service - SIMPPLY@WMS 2007-12-17 --- "i tried the propane file on butane and it blew my ing grill up." - mjtaylor::pipedream 2007-08-23 14:21:46 --- "It takes a problem which we don't have and doesn't even solve it" - Mirror\|rorriM on 2006-09-26 --- "but yeah you want open loop when you go wot ;-)" - PiggieSmalls on 2006-11-10 --- $$$$$$$$$$$$$$$$$ = !@$#!#!!@&%! ----

05-30-2006, 09:50 AM	#5
BLK01S4::HB B!SH AudiWorld Super User Account #: 52597 Join Date: Mar 2003 Posts: 5,924	Ok but .. Do you know why at low RPMs it starts off at .82 ? Shouldn't it be where the O2s are at redline the entire time? or is my thinking wrong? __________________ Stage III Tip : ??? FATS (Race Gas) 3.43 Average Pump gas --------------- Fastest Tiptronic! ET: 12.259@118.25mph :) "Turbos are usually the cheapest/easiest way to add power - Posted by: Corrado79 on 2008-05-21 13:22:49 "Amazing that he could maintain a wedgie and talk out of his ass at the same time. That's one skill he CAN lay claim to. - Skydive@W?? 2007-12-18" --- "good I just added you to my " bitch " VIP list ." -Professional customer service - SIMPPLY@WMS 2007-12-17 --- "i tried the propane file on butane and it blew my ing grill up." - mjtaylor::pipedream 2007-08-23 14:21:46 --- "It takes a problem which we don't have and doesn't even solve it" - Mirror\|rorriM on 2006-09-26 --- "but yeah you want open loop when you go wot ;-)" - PiggieSmalls on 2006-11-10 --- $$$$$$$$$$$$$$$$$ = !@$#!#!!@&%! ----

05-30-2006, 09:58 AM	#6
eigenvector AudiWorld Senior Member Account #: 103335 Join Date: Jan 2006 Posts: 2,009	yea your correct it should be the same or close threw the rpm band.. were you at WOT at low rpms ? __________________ (Audi)(S4)(01.5)(Silver)(90k)(Stage 2+) (GIAC)(710N)

05-30-2006, 10:05 AM	#7
k04/rs6north Junior Member Account #: 47960 Join Date: Dec 2002 Posts: 1,716	it will be what is programmed by GIAC (although it does look like a AWEK04 O2 curve)... - this ramping of the O2 curve from leaner to richer is exactly what is seen in AWE's K04 software - if you check the EPL dyno day charts of my AWE K04 Allroad you will see that the wideband curve starts at 13.0 a/f at peak tq and ends up at 11.5 a/f at redline (it follows as linear path from 13.0 to 11.5) - as I don't have X chip tuning expertise, but remember Jordon's many posts on his homebrew setup using the X chip, his O2 curve would stay absolutely straight from 4000 to 7000rpms (did not rise as you have shown) - so some searching to find out which X chip version you have and see if that is the version that most of the homebrew guys use - what is you MBC setup (stand alone or parallel)? __________________ 2001.5 Nogaro S4 2002 Black Allroad 6spd RIP Matthew Ammon aka O.W. Kenobi

05-30-2006, 10:06 AM	#8
BLK01S4::HB B!SH AudiWorld Super User Account #: 52597 Join Date: Mar 2003 Posts: 5,924	That was a downshift from 4th to 3rd .. 3rd pull started at 3700 RPM approx. so, maybe I used the wrong word when I said low .. Something aint right <scratches head> __________________ Stage III Tip : ??? FATS (Race Gas) 3.43 Average Pump gas --------------- Fastest Tiptronic! ET: 12.259@118.25mph :) "Turbos are usually the cheapest/easiest way to add power - Posted by: Corrado79 on 2008-05-21 13:22:49 "Amazing that he could maintain a wedgie and talk out of his ass at the same time. That's one skill he CAN lay claim to. - Skydive@W?? 2007-12-18" --- "good I just added you to my " bitch " VIP list ." -Professional customer service - SIMPPLY@WMS 2007-12-17 --- "i tried the propane file on butane and it blew my ing grill up." - mjtaylor::pipedream 2007-08-23 14:21:46 --- "It takes a problem which we don't have and doesn't even solve it" - Mirror\|rorriM on 2006-09-26 --- "but yeah you want open loop when you go wot ;-)" - PiggieSmalls on 2006-11-10 --- $$$$$$$$$$$$$$$$$ = !@$#!#!!@&%! ----

05-30-2006, 10:10 AM	#9
BLK01S4::HB B!SH AudiWorld Super User Account #: 52597 Join Date: Mar 2003 Posts: 5,924	Good insight I will crack the lid open tonight and see what version it is.. From what piggy told me its the last soldered version before they went flash if that does anything for you. I am running a MBC alone no N75. There is no way of adjusting that fuel curve to jump up richer huh? __________________ Stage III Tip : ??? FATS (Race Gas) 3.43 Average Pump gas --------------- Fastest Tiptronic! ET: 12.259@118.25mph :) "Turbos are usually the cheapest/easiest way to add power - Posted by: Corrado79 on 2008-05-21 13:22:49 "Amazing that he could maintain a wedgie and talk out of his ass at the same time. That's one skill he CAN lay claim to. - Skydive@W?? 2007-12-18" --- "good I just added you to my " bitch " VIP list ." -Professional customer service - SIMPPLY@WMS 2007-12-17 --- "i tried the propane file on butane and it blew my ing grill up." - mjtaylor::pipedream 2007-08-23 14:21:46 --- "It takes a problem which we don't have and doesn't even solve it" - Mirror\|rorriM on 2006-09-26 --- "but yeah you want open loop when you go wot ;-)" - PiggieSmalls on 2006-11-10 --- $$$$$$$$$$$$$$$$$ = !@$#!#!!@&%! ----

05-30-2006, 10:25 AM	#10
k04/rs6north Junior Member Account #: 47960 Join Date: Dec 2002 Posts: 1,716	start with Primary and get the heavy lifting done first... - just remember that these O2 readings are not wibeband readings and that you are tweaking on imperfect information - I can tell you that on my car, O2=.865 was approximately 13.0 a/f as confirmed by a wideband on EPL's dyno - as my car has been programmed with an agressive boost profile (26psi to 23.24psi) the car has been programmed with a much richer fuel load (11.0 to 11.5 a/f from peak torque to redline) this equates on my car to .88-.90 O2 values - much smaller changes can be using the accelerating channel __________________ 2001.5 Nogaro S4 2002 Black Allroad 6spd RIP Matthew Ammon aka O.W. Kenobi

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