First logs of my K03/K04 hybrids on X...

S4saken · 03-13-2005, 10:31 AM

I couldn't find any clear roads to really open it up, but I was able to get up to 90 or so in third gear and collect some data.

Anyway, I am running Jacob's K03/K04s on stock fueling and 93 octane. Also have airbox mods and AWE S-flow and DPs. I do have a MBC in // but it is cranked down for maximum spring force.

I don't know how to interperate some of this data, but some wierdness is happening...

Here is my Actual vs Requested boost - I'm clearly getting much more boost than the ECU is requesting. Is the N75 regulation unable to keep up with the airflow? Should I start opening up the MBC? I believe the stock injectors are only good for about 16.5-17.0 PSI with the K04 compressor.

Here's my MAF plot... this looks pretty good to me... I was getting around 280 on the stock turbos.

Now my injector duty cycle looks way too high - GIAC on stock turbos only peaks at about 130%, right? I'm thinking a 4 bar FPR with the stock injectors.

This one also worries me - I'm not sure what Lambda is, but I'm guessing that 1.0 is the ideal A/F ratio, so .6 would be very lean, right?

Opinions, advice, and taunts are welcome.

Ed

PSmalls::DoggieStyle · 03-13-2005, 10:44 AM

S4saken · 03-13-2005, 10:45 AM

S4saken · 03-13-2005, 10:53 AM

S4saken · 03-13-2005, 10:54 AM

BLK01S4::HB B!SH · 03-13-2005, 10:54 AM

U are going to need a 5bar at least with those poor stock injectors =\

BLK01S4::HB B!SH · 03-13-2005, 10:58 AM

it down to ~17 psi

Imolavirus@BuehnEngineering · 03-13-2005, 11:00 AM

then you're not going to get a tc issue. Or, you could just use a tcd.

PSmalls::DoggieStyle · 03-13-2005, 11:03 AM

sg_wannabe · 03-13-2005, 11:03 AM

03-13-2005, 10:31 AM	#1
S4saken Junior Member Account #: 47677 Join Date: Dec 2002 Posts: 578	First logs of my K03/K04 hybrids on X... I couldn't find any clear roads to really open it up, but I was able to get up to 90 or so in third gear and collect some data. Anyway, I am running Jacob's K03/K04s on stock fueling and 93 octane. Also have airbox mods and AWE S-flow and DPs. I do have a MBC in // but it is cranked down for maximum spring force. I don't know how to interperate some of this data, but some wierdness is happening... Here is my Actual vs Requested boost - I'm clearly getting much more boost than the ECU is requesting. Is the N75 regulation unable to keep up with the airflow? Should I start opening up the MBC? I believe the stock injectors are only good for about 16.5-17.0 PSI with the K04 compressor. Here's my MAF plot... this looks pretty good to me... I was getting around 280 on the stock turbos. Now my injector duty cycle looks way too high - GIAC on stock turbos only peaks at about 130%, right? I'm thinking a 4 bar FPR with the stock injectors. This one also worries me - I'm not sure what Lambda is, but I'm guessing that 1.0 is the ideal A/F ratio, so .6 would be very lean, right? Opinions, advice, and taunts are welcome. Ed

03-13-2005, 10:44 AM	#2
PSmalls::DoggieStyle Elder Member Account #: 69223 Join Date: Jan 2004 Posts: 30,285	What does throttle position look like after 4k RPM while going WOT??

03-13-2005, 10:45 AM	#3
S4saken Junior Member Account #: 47677 Join Date: Dec 2002 Posts: 578	I just found some posts on Lambda - it looks like < 1 = rich mixture

03-13-2005, 10:53 AM	#4
S4saken Junior Member Account #: 47677 Join Date: Dec 2002 Posts: 578	Here it is... looks like throttle is cutting...

03-13-2005, 10:54 AM	#5
S4saken Junior Member Account #: 47677 Join Date: Dec 2002 Posts: 578	I know, but that's what GIAC requests...

03-13-2005, 10:54 AM	#6
BLK01S4::HB B!SH AudiWorld Super User Account #: 52597 Join Date: Mar 2003 Posts: 5,924	I believe that graph shows lean U are going to need a 5bar at least with those poor stock injectors =\ __________________ 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 --- $$$$$$$$$$$$$$$$$ = !@$#!#!!@&%! ----

03-13-2005, 10:58 AM	#7
BLK01S4::HB B!SH AudiWorld Super User Account #: 52597 Join Date: Mar 2003 Posts: 5,924	hrm u are going to need TCD or use that MBC to lower it down to ~17 psi __________________ 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 --- $$$$$$$$$$$$$$$$$ = !@$#!#!!@&%! ----

03-13-2005, 11:00 AM	#8
Imolavirus@BuehnEngineering Elder Member Account #: 33927 Join Date: Mar 2002 Posts: 17,986	i'd just use the mbc in parallel to control the spike then you're not going to get a tc issue. Or, you could just use a tcd. __________________ -Jacob ^^^CLICK SIG FOR BUEHN ENGINEERING WEBSITE^^^ <big><big>Website Here!!!</big></big> <big>Items For Sale</big>

03-13-2005, 11:03 AM	#9
PSmalls::DoggieStyle Elder Member Account #: 69223 Join Date: Jan 2004 Posts: 30,285	Bingo, explains all of your problems.

03-13-2005, 11:03 AM	#10
sg_wannabe AudiWorld Super User Account #: 87541 Join Date: Feb 2005 Posts: 2,900	slightly OT: NE1 running hybrids here with APR software? __________________ '06 M3, silver gray on black (too many mods to list....) '07 X3 3.0si, monaco blue on gray (stock and yeah, hers) '02 S4, brilliant black on black (gone but not forgotten) '85 Mk2 GTI 16v, estoril blue on black (sold) *'88 325ix, salmon silver on black (sold to and driven by a close friend)

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