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Old 04-15-2013, 03:40 PM   #26
pbrules10
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https://docs.google.com/spreadsheet/...0b0UxeFE#gid=0

This was just a normal no beating on drive. Did I do this properly? Am I supposed to drive the car hard?
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Old 04-15-2013, 04:32 PM   #27
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Quote:
Originally Posted by scoobasaurusrex View Post
when is the last time you changed your plugs?
Just changed them last month.
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Old 04-15-2013, 05:20 PM   #28
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Quote:
Originally Posted by pbrules10 View Post
https://docs.google.com/spreadsheet/...0b0UxeFE#gid=0

This was just a normal no beating on drive. Did I do this properly? Am I supposed to drive the car hard?
No u did not:/

wot from 2,500rpm to redline in 3rd gear if its a wrx and if its an sti 4th gear but do so in a safe area.

U should post your logs in engine management and tuning where Bill from Cobb can help.
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Old 04-15-2013, 05:46 PM   #29
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Originally Posted by trev762 View Post
No u did not:/

wot from 2,500rpm to redline in 3rd gear if its a wrx and if its an sti 4th gear but do so in a safe area.

U should post your logs in engine management and tuning where Bill from Cobb can help.
I will do this later on and post the log. Thank you for all the help from everyone!
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Old 04-15-2013, 05:56 PM   #30
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Quote:
Originally Posted by trev762 View Post
No u did not:/

wot from 2,500rpm to redline in 3rd gear if its a wrx and if its an sti 4th gear but do so in a safe area.

U should post your logs in engine management and tuning where Bill from Cobb can help.
He's not logging for WOT det, he's logging for gas mileage, so it's correct. A WOT log to redline would be useless when looking for the cause of bad gas mileage.
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Old 04-15-2013, 05:57 PM   #31
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Quote:
Originally Posted by pbrules10 View Post
https://docs.google.com/spreadsheet/...0b0UxeFE#gid=0

This was just a normal no beating on drive. Did I do this properly? Am I supposed to drive the car hard?
That's fine, but I don't have permission to open the file.
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Old 04-15-2013, 06:15 PM   #32
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That's fine, but I don't have permission to open the file.
Try again, I changed the privacy settings.
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Old 04-15-2013, 06:21 PM   #33
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Quote:
Originally Posted by pbrules10 View Post
https://docs.google.com/spreadsheet/...0b0UxeFE#gid=0

This was just a normal no beating on drive. Did I do this properly? Am I supposed to drive the car hard?
Did you recently reset the ECU?
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Old 04-15-2013, 06:23 PM   #34
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I updated my AP then reflashed into the car a little while before doing this log, perhaps that?
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Old 04-15-2013, 06:24 PM   #35
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I realize im not contributing a great deal to the op with this. However, i recently went on a lil roadtrip thru some hills and mountains (nothing extremely steep) and all highway driving. I go about 340 miles per full tank. (roughly 22mpg) I also know im running rich at idle, but im not sure if that affects highway driving. My average speed was somewhere between 75-80mph. Ive heard the bigger turbo would also contribute to less mpg. Any thoughts?

Again, sorry to the OP. I figured i would be easier to post up in here as opposed to starting a new thread over a very similar question.
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Old 04-15-2013, 06:28 PM   #36
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Originally Posted by pbrules10 View Post
I updated my AP then reflashed into the car a little while before doing this log, perhaps that?
Yeah, flashing a new tune resets all of the learned parameters, so the log is more or less useless. You need to give it a few days or a week of normal driving and then do it again.

However, there's a definite trend if you look at Learning A. The ECU is detecting that you're running lean and is dumping in more and more fuel. By the end of the log AFRLA is up to +9% (normal range is +/- 3-4%). This could be indicative of a bad O2 sensor or a pre-O2 exhaust leak, assuming the AFR isn't really that bad. If the AFR actually is that bad, it could mean a vacuum leak.

Also, DAM (dynamic advance multiplier) isn't on the list. This close to a reset it doesn't really matter since it's just going to be 0.5 anyway, but after a day or two it should rise to 1. If it never gets to 1, there could be a det problem that's holding back your ignition timing.

Last edited by the suicidal eggroll; 04-15-2013 at 06:43 PM.
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Old 04-15-2013, 06:32 PM   #37
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Yeah, flashing a new tune resets all of the learned parameters, so the log is more or less useless. You need to give it a few days or a week of normal driving and then do it again.

However, there's a definite trend if you look at Learning A. The ECU is detecting that you're running lean and is dumping in more and more fuel. By the end of the log AFRLA is up to +9% (normal range is +/- 3-4%). This could be indicative of a bad O2 sensor or a pre-O2 exhaust leak, assuming the AFR isn't really that bad. If the AFR actually is that bad, it could mean a boost leak.

Also, DAM (dynamic advance multiplier) isn't on the list. This close to a reset it doesn't really matter since it's just going to be 0.5 anyway, but after a day or two it should rise to 1. If it never gets to 1, there could be a det problem that's holding back your ignition timing.

I will definitely give it a few days and log again then post for you guys.
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Old 04-15-2013, 06:39 PM   #38
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The accessport will also log instant fuel economy, you could add that one parameter to your log. Might help give some insight.
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Old 04-15-2013, 07:03 PM   #39
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Originally Posted by the suicidal eggroll View Post

He's not logging for WOT det, he's logging for gas mileage, so it's correct. A WOT log to redline would be useless when looking for the cause of bad gas mileage.
With the op flashing the ecm, which reseted all his parameters is why I suggested doing a wot log. Wouldn't it at least show his current air/fuel until closed loop to at least give some sort indication.
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Old 04-15-2013, 10:51 PM   #40
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double post

Last edited by the suicidal eggroll; 04-16-2013 at 09:16 AM.
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Old 04-15-2013, 10:52 PM   #41
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Originally Posted by trev762 View Post
With the op flashing the ecm, which reseted all his parameters is why I suggested doing a wot log. Wouldn't it at least show his current air/fuel until closed loop to at least give some sort indication.
A 2.5k+ RPM WOT log would have about 5 CL measurements, most of which would be corrupted by tip-in compensations. Once the exhaust pressure rises and the ECU switches to OL, all AFR measurements and compensations are void.

MPG problems have to be addressed in closed loop; once the ECU switches to OL all bets are off.

The point of logging is to capture the ECU's measurements and compensations in the area of interest. If the problem occurs at WOT, then you log at WOT. If the problem occurs at idle, then you log at idle. MPG problems occur in closed loop, therefore any logs to troubleshoot MPG problems must also be done in closed loop.
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Old 04-16-2013, 12:26 AM   #42
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Ok so in a week or so I should do another data log under normal driving circumstances? For how long should I log?
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Old 04-16-2013, 09:25 AM   #43
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It would be best to do a log that covers as much of CL as possible. If you could start it at idle, and then gently accelerate to freeway speeds, trying to stay in CL (<3.5k RPM and low throttle) and trying not to change the throttle too rapidly, that should do it.

Though it may be unnecessary, if the first line of your log shows that all four AFRL are saturated at +15% (which your previous log was trending toward).

Are you sure you don't have any exhaust leaks in the header/uppipe?
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Old 04-16-2013, 10:22 AM   #44
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Originally Posted by trev762 View Post
In short words is exactly why I said get protuned and doesn't matter if u r getting 22mpg as appose to 14mpg every car isn't going to get the same results this is why I said to get protuned lol.
An Accessport update isn't going to do anything for him/

Not a fan of ots maps as I was reading way to lean and some r running way to rich/


By getting a protune done this way the tuner can see exactly his air/fuel ratio is with a wideband o2, unless the op has a wideband already which I highly doubt.
So you're saying that updating the accessport and maps are a bad idea? You don't know what version he's on. Neither does he, so updating certainly can't hurt. It may not help, but it won't hurt.

Quote:
Originally Posted by Cobbtuning.com
 3.00 - Now compatible with Launch Control and Flat-Foot Shifting (LC/FFS) features (MT only). For complete details on how to enable and use the LC/FFS functionality, please visit this FAQ. These maps have been created with the newly-released AccessTUNER Pro 1.9.0.0. Maps created with this version of AccessTUNER software require the latest AccessPORT firmware (version 1.6.4.0-1189 or higher) be installed. AccessPORT Manager 2.0 will automatically update the AccessPORT to the latest firmware version and is available for download on the COBB Tuning Support web page.
 1.02 - Modified ignition optimization settings for low RPM ignition floor. Modified CL/OL fuel settings for optimal performance and further optimized ignition advance settings.
 1.00 - Original Mapping. Tuned AVCS, Boost, Fuel, Ignition, Closed Loop control, Dynamic Advance, Throttle Duty Cycles, and base programming logic to improve the driving quality of the car. Revised Closed Loop management. Revised boost control parameters. Smoothed out boost related values, improved boost response at lower RPMs. Revised AVCS mapping. Altered intake cam timing parameters in an effort to improve low and mid-range torque and boost response. Modified high RPM timing and Dynamic Advance parameters to allow for improved ignition advance learning when using improved octane. Modified Primary Fuel and Primary Ignition tables to account for the effects of AVCS tuning. Further tuned Dynamic Advance table to promote smooth transitional (low RPM to high RPM) acceleration. Raised speed limiter. Moved Speed Limits to 186 mph. Increased boost cut to 17.11psi at sea level.
Quote:
Originally Posted by the suicidal eggroll View Post
Pull out your AP and start making some logs. Start with the closed loop fueling compensations, AFR, DAM, feedback and fine learning knock correction. If I had to guess I'd say your front O2 has gone kaput.



It sounds like there's something wrong with your car. 14 is the kind of mileage you should be getting on a track day, not while driving on the street, and 22 on the highway is pathetic. I get a pretty consistent 21. If I'm driving very hard the whole tank, it will be closer to 20. If I'm grannying it it will be closer to 22. If I'm cruising on the freeway it's closer to 28.
22 is my average between city/highway driving. The 28 sounds pretty close to what I get during long freeway drives.
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Old 04-16-2013, 10:39 AM   #45
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Originally Posted by the suicidal eggroll View Post
It would be best to do a log that covers as much of CL as possible. If you could start it at idle, and then gently accelerate to freeway speeds, trying to stay in CL (<3.5k RPM and low throttle) and trying not to change the throttle too rapidly, that should do it.

Though it may be unnecessary, if the first line of your log shows that all four AFRL are saturated at +15% (which your previous log was trending toward).

Are you sure you don't have any exhaust leaks in the header/uppipe?
It doesn't sound like I have any leaks.
I'll run a data log driving the way you said in a few days and then we can take it from there. Thank you for all the assistance.
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Old 04-16-2013, 11:04 AM   #46
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Quote:
Originally Posted by Jaredwhamilton View Post

So you're saying that updating the accessport and maps are a bad idea? You don't know what version he's on. Neither does he, so updating certainly can't hurt. It may not help, but it won't hurt.

22 is my average between city/highway driving. The 28 sounds pretty close to what I get during long freeway drives.
Huh/

I was saying it won't help with the op's fuel mileage issue. It does not update the fuel maps, it only updates the firmware to make the Accessport more user friendly and or add ons.

Of course its always a good idea to update the Accessport. Either way he should get protune once everything is sorted out.
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Old 04-16-2013, 11:10 AM   #47
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Originally Posted by trev762 View Post
Huh/

I was saying it won't help with the op's fuel mileage issue. It does not update the fuel maps, it only updates the firmware to make the Accessport more user friendly and or add ons.

Of course its always a good idea to update the Accessport. Either way he should get protune once everything is sorted out.
The information I posted are updates to the Perrin OTS stage 2 map, not the Accessport firmware.
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Old 04-16-2013, 11:33 AM   #48
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Originally Posted by Jaredwhamilton View Post

The information I posted are updates to the Perrin OTS stage 2 map, not the Accessport firmware.
Is that update from Perrin or Cobb website???
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Old 04-16-2013, 11:42 AM   #49
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Is that update from Perrin or Cobb website???
Whoops, my mistake. I'm running Perrin. That information is from Cobb's website.

Near the bottom:

https://static.cobbtuning.com/cobbtu..._WRX_06-07.pdf
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Old 04-16-2013, 09:11 PM   #50
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After driving a built STi for a week. i mean completely built for time attack setup lol....that thing's mpg is is unbelievably much worse than mine. but somewhat better than a v8 motor. well tuned so many times by innovative...that being said, i cant complain too mch abt my mpg. i get 167miles from a 8 gallon fillup. thats not full but 2/4 of the tank capacity though. so 4/4 would probably net me 220 at the most i think. dont feel bad. it is the reality of it.

if anything, shed some weight by keeping the spare tire and other personal junk at home! use lighter wheels. upgrade some more...lightweight pulleys etc.
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