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Old 12-30-2012, 12:36 PM   #1
powerls
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Member#: 74322
Join Date: Nov 2004
Chapter/Region: MAIC
Location: Baltimore, MD
Vehicle:
06 STI basic build
TD06SL2 8cm2 20G

Default Fresh rebuild/fresh code

I just rebuilt my 257, and I'm just starting to break it in. I've thrown a code twice so far, engine bank 1 lean p0171. The code has only popped up if I'm too low RPM wise, approx 2k. Should I be worried at all? Or should I just to keep the revs slightly higher?
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Old 12-30-2012, 12:47 PM   #2
Boostedbob
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Join Date: Oct 2012
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Location: Colorado, New Mexico
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08 Sti
OPB

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Is this a stock rebuild on your 257? Where you running mods before the rebuild? If so you may need to get a touch up tune.

As soon as my motor was finished I started data logging and sending the logs to my tuner. On 91 I was getting knock all over. On e85 it was okay at first but at around 800miles on the motor I started running lean all over the place, so my tuner got that fixed after that it has been smooth sailing.
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Old 12-30-2012, 12:51 PM   #3
powerls
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Location: Baltimore, MD
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06 STI basic build
TD06SL2 8cm2 20G

Default

I put in some forged pistons during the rebuild. I was stage 2 before build. I'm currently on the stage 2 map during the break in period, then my builder will tune it. I guess I should be data logging to check things out though
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Old 12-30-2012, 12:52 PM   #4
Boostedbob
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Location: Colorado, New Mexico
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08 Sti
OPB

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Be the best thing to do.
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