Welcome to the North American Subaru Impreza Owners Club Tuesday July 7, 2015
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Engine Management & Tuning

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 10-07-2002, 08:17 PM   #26
codean
Scooby Specialist
 
Member#: 10186
Join Date: Sep 2001
Chapter/Region: MWSOC
Location: some kind of bmw tech...
Default

It COULD be one of the goodies.........


Don't expect it to be cheep though! That is, if they do offer one in the future.
* Registered users of the site do not see these ads.
codean is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 10-07-2002, 08:41 PM   #27
SubaSonic
Scooby Newbie
 
Member#: 11365
Join Date: Oct 2001
Location: Phoenix AZ
Vehicle:
02 N/A, A/T Wagon
Sedona Red Pearl

Default - hint=

Lotsa Wide Band 02 stuff in a SeArCh. From do-it-your-self (DIYS )to ................
SubaSonic is offline   Reply With Quote
Old 10-07-2002, 08:50 PM   #28
WRXTom
Scooby Newbie
 
Member#: 6990
Join Date: May 2001
Location: Halifax, Nova Scotia
Vehicle:
2005 Legacy GT Wagon
Silver

Default

Don't forget about us poor saps that only have access to 91 octane. I'll be checking out http://www.wrxhackers.com/ on a regular basis and I know Nathan et al are working on some good approximations but feel free to post 'em.

Tom
WRXTom is offline   Reply With Quote
Old 10-07-2002, 09:17 PM   #29
DarthChicken
Scooby Specialist
 
Member#: 9073
Join Date: Aug 2001
Chapter/Region: NWIC
Location: Hillsboro, OR.
Vehicle:
2006 ariel atom
wrb/bbs gold frame

Default

or.. what about the data4 datalogger? What is that number that is given for an o2? It seems more accurate, much more consistent than the A/F given on the other log.

125 seems to be somewhere around 14.7:1 A/F. 175 seems to be around 20:1 A/F. Is there some sort of decoder ring for that?

The timing stuff is great, but without an accurate way for the average joe to see what A/F you're running at, its gonna result in a lot of blown up engines
DarthChicken is offline   Reply With Quote
Old 10-07-2002, 10:51 PM   #30
crazyhorse
Scooby Guru
 
Member#: 19502
Join Date: Jun 2002
Chapter/Region: South East
Location: Charlotte, NC
Vehicle:
2010 Impreza with no
scoop. =(

Default

Just stumbled into the thread after looking at our referrer log over at wrx hackers.. Pretty good info, but a "Tuning for Newbs" guide would be perfect. Nathan if you could write something up with a few very basic tips that are specific to the UTec I'd be happy to host it for you. Or anyone else that wants to contribute for that matter. Fact is, the majority of people that get the UTec won't be using a wide band or microphones to detect knock. I'm hoping to get to that point eventually, but it'll be a while I'm afraid.

Hard part from the TurboXS guys stand point is getting people with little to no tuning experience and giving them enough advice to be useful, but trying to keep them from destroying their engines. I appreciate all the work Nathan, Pete, Phil, and everyone else over at TXS has put into getting information out there for us tuners. Keep up the good work guys and I look forward to new goodies in the future.

-Tim
webmaster@crazy-horse.net
http://www.wrxhackers.com
crazyhorse is offline   Reply With Quote
Old 10-07-2002, 11:04 PM   #31
DarthChicken
Scooby Specialist
 
Member#: 9073
Join Date: Aug 2001
Chapter/Region: NWIC
Location: Hillsboro, OR.
Vehicle:
2006 ariel atom
wrb/bbs gold frame

Default

hey, I think I just answered my own question, but I need somebody to confirm.

That 125 number is 18.4 A/F ratio, its a LAMBDA number. right? 125 is 1.25 volts?

Air/Fuel Ratio
Gasoline Lambda Propane Methanol Ethanol Diesel
10.3 0.70 11.0 4.5 6.3 10.2
11.0 0.75 11.8 4.9 6.8 10.9
11.8 0.80 12.5 5.2 7.2 11.6
12.5 0.85 13.3 5.5 7.7 12.3
13.2 0.90 14.1 5.8 8.1 13.1
14.0 0.95 14.9 6.1 8.6 13.8
14.7 1.00 15.7 6.5 9.0 14.5
15.4 1.05 16.5 6.8 9.5 15.2
16.2 1.10 17.2 7.1 9.9 16.0
16.9 1.15 18.0 7.4 10.4 16.7
17.6 1.20 18.8 7.8 10.8 17.4
18.4 1.25 19.6 8.1 11.3 18.1
19.1 1.30 20.4 8.4 11.7 18.9

Right?

Except that the throttle position on that log says 30 when your at 0%, about 118 when your at 50%, and 201 when your at 100%.

Last edited by DarthChicken; 10-07-2002 at 11:45 PM.
DarthChicken is offline   Reply With Quote
Old 10-08-2002, 01:09 AM   #32
ScoobieSnaX
Scooby Specialist
 
Member#: 10844
Join Date: Oct 2001
Location: location, location...
Vehicle:
2004 Acura TL Navi
Pearl

Default

I'm assuming your logging screen #4? I would have to conclude that the #4 datalog is the "raw" data which can be converted to percentages. ie: 201=100% throttle position.

These values are often useful when storing data and arranging it into small memory locations.
ScoobieSnaX is offline   Reply With Quote
Old 10-08-2002, 02:28 AM   #33
HndaTch627
Scooby Guru
 
Member#: 6551
Join Date: May 2001
Chapter/Region: MWSOC
Location: Carol Stream, IL
Vehicle:
'01 GC8 Dinged STM
'09 Concours 14 ABS Black

Default

Quote:
Originally posted by nmyeti


I think you’re right about the stock headers. I told this guy the exact same thing.

-Nathan
www.turboxs.com
except there's one thing, the header has smaller primary runners(higher exhaust velocity) but probably does bleed quite a bit more heat to the atmosphere. But then again the up-pipe is huge as well so there's a good loss in the increased exhaust velocity there.

Jeremy
HndaTch627 is offline   Reply With Quote
Old 10-08-2002, 07:20 AM   #34
d00f
Scooby Specialist
 
Member#: 6000
Join Date: Apr 2001
Location: Ottawa, Canada
Vehicle:
2000 GC8 STi V4 swap
BRP

Default

I tried tuning the EJ25/Tec-II with a narrow band O2 sensor and it was completely useless. The AFR was pretty temp sensitive and anything away from stoich was pretty hard to hit.

You can tune with an EGT but it requires a lot of very close observation. The DIY WB02 sensor is a good thing to build. Requires good soldering skills and at least some electronics experience. I'm used to soldering in 44 pin SMT PLCC chips so it was a walk in the park. Cost me $112 USD for the kit, including the jaycar display and $180CAD for the honda sensor. Took about 8 hours to build both but only because the instructions are so bad.

For DIY tuners, I'd say WBO2 is 95% necessary otherwise you're taking shots in the dark.

-Michael
d00f is offline   Reply With Quote
Old 10-08-2002, 04:05 PM   #35
DarthChicken
Scooby Specialist
 
Member#: 9073
Join Date: Aug 2001
Chapter/Region: NWIC
Location: Hillsboro, OR.
Vehicle:
2006 ariel atom
wrb/bbs gold frame

Default

I may have some good news on my information problem as well. I was using a LINK ECU prior to using this. And I had removed the front o2 sensor, because the link doesn't power the heater wires (if you don't remove it, it WILL ruin the sensor btw). Well, either I didn't remove it soon enough (did run it in for a couple weeks), or when my first replacement block was bad (I'm on my third block, second was bad from the getgo) I contaminated the sensor it looks like.

Anyway, Mark/Nathan are sending me out a new UTEC to confirm that the unit itself isnt' bad (still can't explain the rpms dropping to zero) and I have a new front o2 sensor on order. So, for all your LINK converts, be aware!

And once again, hats off to Turboxs for their great customer service.
DarthChicken is offline   Reply With Quote
Old 10-09-2002, 12:46 PM   #36
whitewag
Scooby Specialist
 
Member#: 10164
Join Date: Sep 2001
Location: Bartlett, IL
Vehicle:
2002 Black Sedan
looks stock

Default

I just want to say thank you Nathan and Phil for an excellent tuning weekend... I'm sure we could have had more power tweaked, but I'm overal satisfied, and if anyone know's me, it's VERY difficult to please me! One thing, prior to the 362.9 whp run, we ran with 333 to the wheels w/o the n-tercooler setup. so it was almost a 30 whp gain. The 340 whp run w/o the nx ntercooler was after we changed boost controllers. If we would have run again with the NX n-tercooler with the new boost controller I'm sure we would have been in the 370's at the wheels, just ran out of nitrous to do that last run. Also noted this is when it was 85 degrees in the shop! It's been pretty cool here in Chicago area and I've got some detonation, Phil if I could send you a datalog, anyway you can figure out where to put some more fuel (or change timing) so I don't get det w/ the 93 octane? I have been running the 100 octane and it's crazy fast and no det with the 93 map. Also I'd like to set-up a 100 octane map for the street (I know I am crazy) To estimate the drive on the street with my 93 map, I pulled on a Z-06 running w/ 93 octane, so it pulls very hard and it definitely lays rubber patches on all 4's when I'm launching it. It's sickening how fast it is now, I'm going to the tracks Thurs to finally hit my 12's. Everyone with getting a UTEC... I wouldn't waste my time trying to tune on the street, go get the dyno tune, well worth the extra money! Thanks again Phil and Nathan!!

Dan
whitewag is offline   Reply With Quote
Old 10-09-2002, 01:54 PM   #37
nmyeti
Scooby Specialist
 
Member#: 4980
Join Date: Mar 2001
Location: Albuquerque, NM USA
Default

Quote:
Originally posted by whitewag
I just want to say thank you Nathan and Phil for an excellent tuning weekend... I'm sure we could have had more power tweaked, but I'm overal satisfied, and if anyone know's me, it's VERY difficult to please me! One thing, prior to the 362.9 whp run, we ran with 333 to the wheels w/o the n-tercooler setup. so it was almost a 30 whp gain. The 340 whp run w/o the nx ntercooler was after we changed boost controllers. If we would have run again with the NX n-tercooler with the new boost controller I'm sure we would have been in the 370's at the wheels, just ran out of nitrous to do that last run. Also noted this is when it was 85 degrees in the shop! It's been pretty cool here in Chicago area and I've got some detonation, Phil if I could send you a datalog, anyway you can figure out where to put some more fuel (or change timing) so I don't get det w/ the 93 octane? I have been running the 100 octane and it's crazy fast and no det with the 93 map. Also I'd like to set-up a 100 octane map for the street (I know I am crazy) To estimate the drive on the street with my 93 map, I pulled on a Z-06 running w/ 93 octane, so it pulls very hard and it definitely lays rubber patches on all 4's when I'm launching it. It's sickening how fast it is now, I'm going to the tracks Thurs to finally hit my 12's. Everyone with getting a UTEC... I wouldn't waste my time trying to tune on the street, go get the dyno tune, well worth the extra money! Thanks again Phil and Nathan!!

Dan
Dan,
I am not totally surprised that you’re getting a little detonation on the 93 map since you had race gas in the tank and we didn't get to road tune with the 93 octane. I suspect that it's as simple as adding a little fuel in the rpm range that your having problems.

We'll talk a look at your map and richen it up just a hair...

-Nathan
nmyeti is offline   Reply With Quote
Old 10-13-2002, 04:55 AM   #38
BRODEL
Scooby Newbie
 
Member#: 16097
Join Date: Mar 2002
Location: Richmond, VA.
Vehicle:
2002 WRX
BLUE

Default Anyone else?

I've been thinking of getting this "Ntercooler" thingy. I have read a couple of posts on this site, and was looking at it as one of the first mods to my car. I am just not sure if I can justify the cost of it though. To the people that have used it, how noticable was the differene after you put it on? Also, how much of a pain is it to get on your car? And lastly, price. I've got a guy that can get me the kit for $330 shipped to my house. Is this a good price or does anyone know of a better price I could get? I've done some looking around on the internet, and it looks like this would be a good price. Please let me know what you think, I am not sure how long I will be able to get it at that price. Thanks.
BRODEL is offline   Reply With Quote
Old 10-13-2002, 05:23 AM   #39
whitewag
Scooby Specialist
 
Member#: 10164
Join Date: Sep 2001
Location: Bartlett, IL
Vehicle:
2002 Black Sedan
looks stock

Default

I checked around and I got mine for 270.00 at a local car show, and that's fairly cheap, but 330 shipped isn't bad at all. It's expensive to maintain, I used 4.5 lbs on a 15 second dyno run. At 3.00 a lb... that run cost me $13.50 in nitrous. Of coarse I don't use it the whole way down the track, just right before I launch and up to about the 1,000 mark. I didn't feel a difference personally at the track, but the dyno numbers don't lie. I've heard of a guy with a WRX dropping as much as 5 tenths off the 1/4 time with only adding the n-tercooler kit, but that's just a rumor I heard... I personally wouldn't get it unless you plan on going to the track on hot days. I like to do things different and I just look at it to be an exotic intercooler sprayer kit. For a little more you can get a water injection kit that you should benefit more from.
whitewag is offline   Reply With Quote
Old 10-15-2002, 02:29 AM   #40
HndaTch627
Scooby Guru
 
Member#: 6551
Join Date: May 2001
Chapter/Region: MWSOC
Location: Carol Stream, IL
Vehicle:
'01 GC8 Dinged STM
'09 Concours 14 ABS Black

Default

Quote:
Originally posted by whitewag
. I like to do things different and I just look at it to be an exotic intercooler sprayer kit.
and you drive me nuts in the process!!!!

water injection will net some power but it's more a safeguard then this would be. The setup DOES get pricey to use but the numbers don't lie.

jeremy
HndaTch627 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Need some tuning advice pleeease Riles Open Source Reflashes 5 03-08-2008 10:48 PM
Props to Rick for some tuning advice gregsatt Texas Impreza Club Forum -- TXIC 1 02-22-2006 02:09 PM
target a/f ratio and boost Jaxx Engine Management & Tuning 7 08-08-2003 02:46 PM
Latest UTEC Dyno Plots SpeedRacer-X Engine Management & Tuning 25 11-05-2002 04:15 PM
Does anybody have dyno plots for a Stroked 2.0L and a Factory 2.2L? sherifx Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 6 09-07-2002 04:08 PM


All times are GMT -4. The time now is 08:00 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2015 Axivo Inc.
Copyright ©1999 - 2015, North American Subaru Impreza Owners Club, Inc.