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Old 08-15-2011, 07:29 PM   #1
Bloodbath
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Default 2011 STI - Check my logs

Hello. I took a few logs today and am looking for some feedback.

I am currently running Cobb stage 1 91 v3.00 map and using Shell V power 91 octane fuel. My mods are Nameless Performance Axle back exhaust and the AccessPort.

Here is a log I took in Sport mode. I notice some knock during hard shifts.

https://docs.google.com/spreadsheet/...hl=en_US#gid=0

This is a log I took in Sport# mode. I see alot more knock in S#, is this normal or anything to be worried about?

https://docs.google.com/spreadsheet/...hl=en_US#gid=0
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Old 08-16-2011, 11:12 AM   #2
Cobb Tuning
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Shift knock is a fairly normal occurrence and is difficult to tune out (and may be false knock). Other occassional corrections, especially if it is a single count (i.e. -1.4 for your ECU), are normal. Consistent corrections during a WOT run is where it is more of concern (other than the shift/throttle mash knock).

Keep in mind that fine knock learning is learned correction - doesn't mean you are knocking at that moment, but had some past knock (other than if the current load/RPM cell changes at that moment). So, it will continue to be applied until it learns (ramps) back up (assuming you hit the conditions and cell necessary for that to happen).

You can give the 91 ACN map a try and see if there's any improvement, but there isn't really a problem here - just keep logging to verify.

Bill
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Old 08-22-2011, 07:46 PM   #3
Bloodbath
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Thank you for the reply, Bill.

Since things are looking good with the v3.00 map would it be worth it to try out the v3.01 map?

Next fill up I was thinking of trying out the 94 octane fuel out here, and changing to the 93 octane map to see what kind of results I get. Will 3 more octane be of any significant benefit?
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Old 08-23-2011, 06:56 AM   #4
2Fast4U1DAY
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Quote:
Originally Posted by Bloodbath
Thank you for the reply, Bill.

Since things are looking good with the v3.00 map would it be worth it to try out the v3.01 map?

Next fill up I was thinking of trying out the 94 octane fuel out here, and changing to the 93 octane map to see what kind of results I get. Will 3 more octane be of any significant benefit?
Subaru Recommends 93 octane for even a stock STI if it is available in your area. It is more knock resistant than 91, and 93 octane can be tuned more aggressively, so you should see some gains, but nothing that the butt dyno will take much notice to. You want significant gains? Grab a Cobb DP and run their Stg 2 93 octane map.
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Old 08-23-2011, 09:47 AM   #5
Cobb Tuning
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Quote:
Originally Posted by Bloodbath View Post
Thank you for the reply, Bill.

Since things are looking good with the v3.00 map would it be worth it to try out the v3.01 map?

Next fill up I was thinking of trying out the 94 octane fuel out here, and changing to the 93 octane map to see what kind of results I get. Will 3 more octane be of any significant benefit?
You can certainly try the v301 map - it has some additional changes to knock learning that could be beneficial.

When comparing any maps, make sure you reflash the new map (not realtime change) and give it about a week of driving for the ECU to learn before making any determination on your butt dyno. Whenever you reflash the map, you reset the ECU's learned parameters which may make it feel a bit soft at first.

Bill
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Old 08-23-2011, 07:01 PM   #6
Bloodbath
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Quote:
Originally Posted by 2Fast4U1DAY View Post
Subaru Recommends 93 octane for even a stock STI if it is available in your area. It is more knock resistant than 91, and 93 octane can be tuned more aggressively, so you should see some gains, but nothing that the butt dyno will take much notice to. You want significant gains? Grab a Cobb DP and run their Stg 2 93 octane map.
It's funny you should mention that, because when I first ordered my car, I spoke with a few guys at the dealership (maybe that was my first mistake?) and asked them 91 octane no ethanol vs 94 w/ 10% ethanol, and they all said go with the 91. I have yet to see anywhere in the manual where it says 93 is recommended, but then again I haven't spent much time reading it.

I'm not power hungry... yet. When the time is right, I will be getting a DP for stage 2. I just want to make sure the car is running strong and problem free.

Thanks very much for the replies and help!
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Old 08-23-2011, 08:29 PM   #7
2Fast4U1DAY
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Quote:
Originally Posted by Bloodbath

It's funny you should mention that, because when I first ordered my car, I spoke with a few guys at the dealership (maybe that was my first mistake?) and asked them 91 octane no ethanol vs 94 w/ 10% ethanol, and they all said go with the 91. I have yet to see anywhere in the manual where it says 93 is recommended, but then again I haven't spent much time reading it.

I'm not power hungry... yet. When the time is right, I will be getting a DP for stage 2. I just want to make sure the car is running strong and problem free.

Thanks very much for the replies and help!
Check the notes on the Cobb maps... Thats where I got the 93 recommendation statement. I think its somewhere near the bottom.

Edit: And yes talking to the stealership about something like this is a mistake. Most of them dont know their a$$ from a hole in the ground.
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Old 08-26-2011, 04:40 PM   #8
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Hey Bloodbath,
If you go with Husky94 you are going to easily loose 50km's a tank. I personally use esso 91 in my wrx rather than shell. Also I would not go with the 93 map for us in western canada because if you go on a trip husky's can be hard to find and then you might be stuck with 91. Maybe stay with the 91 map, try husky 94 just for added assurance?
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Old 08-27-2011, 12:45 AM   #9
Bloodbath
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Quote:
Originally Posted by Delphi View Post
Hey Bloodbath,
If you go with Husky94 you are going to easily loose 50km's a tank. I personally use esso 91 in my wrx rather than shell. Also I would not go with the 93 map for us in western canada because if you go on a trip husky's can be hard to find and then you might be stuck with 91. Maybe stay with the 91 map, try husky 94 just for added assurance?
Does the ethanol kill mileage that much? I've been running Shell 91 specifically for how easy it is to find, and because it's ethanol free. Like you said, the one thing I don't like about switching to the 94 is how uncommon it is. I'm probably just paranoid about breaking an expensive toy. I'll probably stick with Shell 91 and keep logging.
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Old 08-27-2011, 03:48 PM   #10
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Quote:
Originally Posted by Bloodbath View Post
Does the ethanol kill mileage that much? I've been running Shell 91 specifically for how easy it is to find, and because it's ethanol free. Like you said, the one thing I don't like about switching to the 94 is how uncommon it is. I'm probably just paranoid about breaking an expensive toy. I'll probably stick with Shell 91 and keep logging.
When I used 94 I lost 50km's of city driving. Tried it on a road trip to Jasper and lost 30km's of highway. Also I take it you're from Alberta?
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Old 08-28-2011, 07:55 PM   #11
Bloodbath
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Quote:
Originally Posted by Delphi View Post
When I used 94 I lost 50km's of city driving. Tried it on a road trip to Jasper and lost 30km's of highway. Also I take it you're from Alberta?
Winnipeg, Manitoba. I'm really starting to steer away from Huksy 94. I've already lost some mileage from going stage 1 and although I could afford more frequent fill ups, I'd rather get the better fuel economy.
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