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Old 04-24-2010, 04:59 PM   #1
craig007
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Member#: 161507
Join Date: Oct 2007
Location: NNY
Vehicle:
2008 WRX 5 Door
SWP

Question Knock Correction question...Noob here.

So I got my AP last week and installed it per installation instructions. I am running an SPT CBE and ditched the K&N drop-in for a normal flowing paper filter. Stock motor otherwise, 4EAT tranny. I have been driving the car conservatively, never over 4K RPMS. My question is, what is acceptable for the knock correction? I have seen as low as -6.7 (today, climbing a decent hill, 3rd gear, 4k RPM and groceries in the back ). I have done some research here and on the Cobb Forums, but maybe I am a missing something. Usually with normal driving, I get around -1.4 or so. Using the Stage 1 91 tune with Sunoco 93 Octane gas. Thanks.

Craig
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Old 04-25-2010, 08:55 PM   #2
craig007
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SWP

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No one has any ideas? I know it's probably a new guy type of question. Just don't want to hurt the family grocery machine. Thanks.
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Old 04-25-2010, 10:31 PM   #3
norcalwrx816
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flat4/Mayhem Tuning!

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yeah your using stage 1 91 use stage 1 93 map
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Old 04-29-2010, 05:51 AM   #4
flatthump
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It depends on 100 other things. You need a log so we can view a lot of crucial factors that have an affect on the danger related to knock.

If you don't have a custom tune I'm not surprised.
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Old 04-29-2010, 06:34 AM   #5
ohm
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IAG Built

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Under normal driving conditions (non-boost low RPM) the ECU will reduce timing for a number of reasons, one of them being to maximize fuel economy. I wouldn't be concerned, it is perfectly acceptable. If you are seeing this in the high RPM range while under boost, then I would investigate further. If your IAM were to drop, then I would be concerned.
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Old 04-29-2010, 12:46 PM   #6
Kupkake
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Sti Mikey Tuned

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Use the right map with the right Gas.

91oct with ACN Stg1 91 Map
93oct with Stg1 93 Map.
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