For you homebrew tooners and the archives.

sj6sp · 07-26-2005, 05:56 PM

Did some lemmi adjustments on Sunday with my new bits...RS4 MAF w/ Hitachi sensor (thanks piggie), RS4 airbox. I am running greentops.
<edit> with X-chip

Pulling 11.5% primary gets you in a pretty good spot w/ fueling and timing correction IMO. I'll note that with different intakes (MAF and Airbox/filter) your results will likely differ quite a bit. The RS4 Airbox has a bell shaped inlet leading to the MAF...I'd venture that it is there for a reason;-)

I had a few degrees of timing pulled to begin with...I'll add some back when:
It gets cooler (85 and humid when I did this)
I run higher octane
Less boost (currently at about 19-20psi)

Other mods worth noting:
AWE ICs
RS4 K04s
ASP Phenolic spacers.

sj6sp · 07-26-2005, 06:07 PM

A little more fuel pulled back and more timing pulled pulled by the ECU.
I did not keep adding fuel in to see how far I could improve timing. Tweaking for another day.

I will say that I started at -15% and drove around a bit to get a reading on fuel trims (didn't go WOT). They were pretty close to 0 so I didn't risk a WOT run as it is too lean IMO...torque felt noticeably stronger at low boost (part throttle)than with my final setting of -11.5.

Anyhow, your comments and experience is appreciated.

PSmalls::DoggieStyle · 07-26-2005, 06:12 PM

Most people pull 20%+ with greentops and RS4 MAF to get a nice AFR.

BLK01S4::HB B!SH · 07-26-2005, 06:59 PM

Ah10@WMS · 07-26-2005, 07:50 PM

Mike2kS4 · 07-26-2005, 07:56 PM

You change your fuel filter lately? Pump ok?

sj6sp · 07-26-2005, 09:02 PM

sj6sp · 07-26-2005, 09:11 PM

I was much richer using my old intake set-up. I adjusted Lemmi to -24% primary and was still getting 0.89V O2s back then.

This is right where I want it to be

PSmalls::DoggieStyle · 07-26-2005, 09:13 PM

Seriously, log 003 and 031 together even so you can get an idea of what RPM you are at. I say easy .9 02 voltages, but what do I know....

sj6sp · 07-26-2005, 09:15 PM

The two parts were designed to work together. Remember the RS4 airbox has a bellmouth in it.

07-26-2005, 05:56 PM	#1
sj6sp Member Account #: 31992 Join Date: Feb 2002 Posts: 2,908	For you homebrew tooners and the archives. Did some lemmi adjustments on Sunday with my new bits...RS4 MAF w/ Hitachi sensor (thanks piggie), RS4 airbox. I am running greentops. <edit> with X-chip Pulling 11.5% primary gets you in a pretty good spot w/ fueling and timing correction IMO. I'll note that with different intakes (MAF and Airbox/filter) your results will likely differ quite a bit. The RS4 Airbox has a bell shaped inlet leading to the MAF...I'd venture that it is there for a reason;-) I had a few degrees of timing pulled to begin with...I'll add some back when: It gets cooler (85 and humid when I did this) I run higher octane Less boost (currently at about 19-20psi) Other mods worth noting: AWE ICs RS4 K04s ASP Phenolic spacers. __________________ <A HREF="http://www.marsavius.net/qclub" target="_blank"> </a>

07-26-2005, 06:07 PM	#2
sj6sp Member Account #: 31992 Join Date: Feb 2002 Posts: 2,908	For comparison A little more fuel pulled back and more timing pulled pulled by the ECU. I did not keep adding fuel in to see how far I could improve timing. Tweaking for another day. I will say that I started at -15% and drove around a bit to get a reading on fuel trims (didn't go WOT). They were pretty close to 0 so I didn't risk a WOT run as it is too lean IMO...torque felt noticeably stronger at low boost (part throttle)than with my final setting of -11.5. Anyhow, your comments and experience is appreciated. __________________ <A HREF="http://www.marsavius.net/qclub" target="_blank"> </a>

07-26-2005, 06:12 PM	#3
PSmalls::DoggieStyle Elder Member Account #: 69223 Join Date: Jan 2004 Posts: 30,285	That's not redline, is it? With only that much fuel pulled, I'd expect much higher 02 voltages. Most people pull 20%+ with greentops and RS4 MAF to get a nice AFR.

07-26-2005, 06:59 PM	#4
BLK01S4::HB B!SH AudiWorld Super User Account #: 52597 Join Date: Mar 2003 Posts: 5,924	hitting a CF of 9 is bad? __________________ 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 --- $$$$$$$$$$$$$$$$$ = !@$#!#!!@&%! ----

07-26-2005, 07:50 PM	#5
Ah10@WMS AudiWorld Super User Account #: 9327 Join Date: Aug 2000 Posts: 7,630	What fueling are you running? __________________ 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

07-26-2005, 07:56 PM	#6
Mike2kS4 Elder Member Account #: 38083 Join Date: Jun 2002 Posts: 12,105	2nd. You change your fuel filter lately? Pump ok? __________________ 2002 S4 Avant, 6spd. Bone stock. <a href="http://www.autospeed.us"> </a> Caveat: Any advice I express regarding potential tuning and such is purely informational. If your knowledge and abilities are not up to the task, no amount of advice can assist.

07-26-2005, 09:02 PM	#7
sj6sp Member Account #: 31992 Join Date: Feb 2002 Posts: 2,908	It's not bad, but lower CF means better timing __________________ <A HREF="http://www.marsavius.net/qclub" target="_blank"> </a>

07-26-2005, 09:11 PM	#8
sj6sp Member Account #: 31992 Join Date: Feb 2002 Posts: 2,908	No change in filter, haven't checked fuel pressure but... I was much richer using my old intake set-up. I adjusted Lemmi to -24% primary and was still getting 0.89V O2s back then. This is right where I want it to be __________________ <A HREF="http://www.marsavius.net/qclub" target="_blank"> </a>

07-26-2005, 09:13 PM	#9
PSmalls::DoggieStyle Elder Member Account #: 69223 Join Date: Jan 2004 Posts: 30,285	So does that log show you WOT at redline or not? I can't imagine it is. Seriously, log 003 and 031 together even so you can get an idea of what RPM you are at. I say easy .9 02 voltages, but what do I know....

07-26-2005, 09:15 PM	#10
sj6sp Member Account #: 31992 Join Date: Feb 2002 Posts: 2,908	Yeah but is that also with an RS4 airbox? The two parts were designed to work together. Remember the RS4 airbox has a bellmouth in it. __________________ <A HREF="http://www.marsavius.net/qclub" target="_blank"> </a>

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