Here's my latest FATS I promised. It's getting a bit quicker ;)

Mike2kS4 · 09-11-2005, 01:53 PM

Since some people (bishes) were nagging me on how it's going, I figured I'd give you guys a mid-tweak update. Here's my "official" results while tweaking it to my "street" boost settings of ~22psi peak and 20.5 at redline. I still haven't nailed down my optimal AFR, but I'm trying

By the end of next week I'll "kick it up a notch" to ~25 peak tapering to 22 for a serious assault on the 3 second mark.

Ambient was in the mid 70's, Fuel was 94 at about a quarter tank. O2's still aren't lining up as they should, so I'll be swapping them out for my spare set tonight or tomorrow night. I think the oil ingestion from my previously deceased turbo is affecting their readings.

Timing was abysmal: Peak at 15. I have a banging cat-back (welded milltek) that I need to rectify before I can start diagnosing a potential problem with oil-soot in the combustion chambers causing it. I suppose a tankful of FATS runs on 100oct should fix it

Given the chart above, I'm thinking it could be either.

Man: but check out that flow. 451g/s!!! (88mm MAF housing)AND the curve isn't decreasing at all yet, (those little waves are the boost controller stepping in) so there's a bit more flow left

One interesting thing in this graph: When you see the r/s JUMP it's because the timing has jumped. At 5400 and 5900 timing jumped to up and then it went back down again. Notice the corresponding increase in acceleration at those points.

Once I get that timing sorted this thing will be really quick, without any extra boost!

Snow Trooper · 09-11-2005, 01:56 PM

PSmalls::DoggieStyle · 09-11-2005, 01:59 PM

Mike2kS4 · 09-11-2005, 02:02 PM

I have spares so if I'm pulling em out I might as well replace em. Maybe I'll clean those too before putting em in.

Keyboard_Tuna · 09-11-2005, 02:13 PM

Downstream :P

BigBlueMachine43 · 09-11-2005, 02:20 PM

Pretty cool. I wanna give this FATS thing a try tonight. Do you do two pulls in opposite directions and then average them?

Arcteryx::Stock Rods · 09-11-2005, 02:23 PM

i plan on learning really soon! i think the car will be ready this upcoming week, and hopefully i will be able to post logs asap to bug you about it :P

i would like to learn how to read the ignition timing overall graph.

btw, those grams per sec, is just nuts!

Arcteryx::Stock Rods · 09-11-2005, 02:28 PM

OCA::DIY Motorsports · 09-11-2005, 02:40 PM

Don't doubt you at all, just don't see 451 on that graph.

BLK01S4::HB B!SH · 09-11-2005, 02:44 PM

09-11-2005, 01:53 PM	#1
Mike2kS4 Elder Member Account #: 38083 Join Date: Jun 2002 Posts: 12,105	Here's my latest FATS I promised. It's getting a bit quicker ;) Since some people (bishes) were nagging me on how it's going, I figured I'd give you guys a mid-tweak update. Here's my "official" results while tweaking it to my "street" boost settings of ~22psi peak and 20.5 at redline. I still haven't nailed down my optimal AFR, but I'm trying By the end of next week I'll "kick it up a notch" to ~25 peak tapering to 22 for a serious assault on the 3 second mark. Ambient was in the mid 70's, Fuel was 94 at about a quarter tank. O2's still aren't lining up as they should, so I'll be swapping them out for my spare set tonight or tomorrow night. I think the oil ingestion from my previously deceased turbo is affecting their readings. Timing was abysmal: Peak at 15. I have a banging cat-back (welded milltek) that I need to rectify before I can start diagnosing a potential problem with oil-soot in the combustion chambers causing it. I suppose a tankful of FATS runs on 100oct should fix it Given the chart above, I'm thinking it could be either. Man: but check out that flow. 451g/s!!! (88mm MAF housing)AND the curve isn't decreasing at all yet, (those little waves are the boost controller stepping in) so there's a bit more flow left One interesting thing in this graph: When you see the r/s JUMP it's because the timing has jumped. At 5400 and 5900 timing jumped to up and then it went back down again. Notice the corresponding increase in acceleration at those points. Once I get that timing sorted this thing will be really quick, without any extra boost! __________________ 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.

09-11-2005, 01:56 PM	#2
Snow Trooper AudiWorld Super User Account #: 71496 Join Date: Mar 2004 Posts: 5,694	just clean out your o2s with some brake clean then hit them with air __________________ ___________________________ \|.....Overnight.......................\| .\|\ \|.......German Parts..................l..\|\|'\|";,___. \|_..._..._____________======'l=\|_\|_\|....,] "(@)'(@)""'''''''''''''"''''''"/(@)(@)**** "(@) North American Distributor for Rosten Performance products. Old Picture poster.

09-11-2005, 01:59 PM	#3
PSmalls::DoggieStyle Elder Member Account #: 69223 Join Date: Jan 2004 Posts: 30,285	Holy poop, that's FAST!

09-11-2005, 02:02 PM	#4
Mike2kS4 Elder Member Account #: 38083 Join Date: Jun 2002 Posts: 12,105	Good advice mang: I hit em with brake-clean already but no air when I pulled the engine... I have spares so if I'm pulling em out I might as well replace em. Maybe I'll clean those too before putting em in. __________________ 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.

09-11-2005, 02:13 PM	#5
Keyboard_Tuna New Member Account #: 76722 Join Date: Jun 2004 Posts: 26	Bah, I can swim faster than that... Downstream :P __________________

09-11-2005, 02:20 PM	#6
BigBlueMachine43 New Member Account #: 97087 Join Date: Sep 2005 Posts: 10	Where did you get that FATS calculator? Pretty cool. I wanna give this FATS thing a try tonight. Do you do two pulls in opposite directions and then average them?

09-11-2005, 02:23 PM	#7
Arcteryx::Stock Rods Senior Member Account #: 70072 Join Date: Feb 2004 Posts: 8,197	not sure how to read most of that, but i plan on learning really soon! i think the car will be ready this upcoming week, and hopefully i will be able to post logs asap to bug you about it :P i would like to learn how to read the ignition timing overall graph. btw, those grams per sec, is just nuts! __________________ Bored 2.8/9.1CR JE Pistons/034 Rods/RS4 Heads KO4's Port Polished/VAST Meth Injection RS4 Intake Manifold/Throttle Body X-1 Intake/ER IC's ASP Exhaust Heads to Tips Clutchmaster Stage IV with LWFW STaSIS Ohlins 700/800 AWE DTS Alcons 355 6 Piston BBK

09-11-2005, 02:28 PM	#8
Arcteryx::Stock Rods Senior Member Account #: 70072 Join Date: Feb 2004 Posts: 8,197	i think markp came up with that...he might have a link in his sig...not sure. __________________ Bored 2.8/9.1CR JE Pistons/034 Rods/RS4 Heads KO4's Port Polished/VAST Meth Injection RS4 Intake Manifold/Throttle Body X-1 Intake/ER IC's ASP Exhaust Heads to Tips Clutchmaster Stage IV with LWFW STaSIS Ohlins 700/800 AWE DTS Alcons 355 6 Piston BBK

09-11-2005, 02:40 PM	#9
OCA::DIY Motorsports Member Account #: 60276 Join Date: Aug 2003 Posts: 5,655	I'm sure I'm missing something, but I only see 320gs on that first graph. Don't doubt you at all, just don't see 451 on that graph. __________________ SUPPORT STEM CELL RESEARCH! "There are (shop)whores that do provide a valuable service. However, you appear as a whore with no orifices, therefore all you accomplish is space occupation." --Kartman "Those who would give up ESSENTIAL Liberty to purchase a little temporary safety, deserve NEITHER liberty nor safety" Benjamin Franklin

09-11-2005, 02:44 PM	#10
BLK01S4::HB B!SH AudiWorld Super User Account #: 52597 Join Date: Mar 2003 Posts: 5,924	*MAF READING MAF SIZE OVER STOCK = 451g/sec __________________ 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 --- $$$$$$$$$$$$$$$$$ = !@$#!#!!@&%! ----

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode


Discussion Forums:	Advanced Search