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Logging and tuning in cold temps.

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Old Dec 4, 2007 | 05:10 PM
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Logging and tuning in cold temps.

Should I really wait to tune for my new exhaust when its warmer out? Would it be a waist of time? I just need some opinions please.
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Old Dec 4, 2007 | 05:18 PM
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From: digging for oil
ask mellon tunnig or Davi Buschur i had the same question and he answered it i forgot what the answer was,,,, and when you get an answer please PM me im curious to see
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Old Dec 4, 2007 | 05:21 PM
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lol...I called a friend and said "go ahead and tune in the cold, but you will have to tune again when the weather changes. It's good to have a cold weather map anyway". Good enough answer for me!
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Old Dec 4, 2007 | 11:42 PM
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haha
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Old Dec 5, 2007 | 09:35 AM
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If you tune in one extreme temp it's always a good idea to check in on the tune when it swings to the other extreme.

some of my summer customers had me retune them for the cold weather and we saw significant gains.

I do leave a little wiggle room in the tunes by tapering the timing/fuel for different RPM/Loads among other things to help reduce the chance of having trouble in other weather.
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Old Dec 5, 2007 | 12:08 PM
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I was acutally wondering that as well, because most of my logs are done during 20 deg or so outside.

hmm good info
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Old Dec 5, 2007 | 01:23 PM
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Cold weather is probably the safer of the extremes to tune in. You generally can't get away with as much timing advance in the winter, so you are more likely to be safe in the summer. If you tune in the summer, it's more likely you'll see knock appear in the colder months.

As Chris said, you would ideally get a tune for summer and winter to get the most from the car. A winter tune will be somewhat weak in the summer since boost will likely drop and you could be running a couple more degrees of timing.

Or, you could just tune in the early spring/late fall and you're likely to be good across the board. =)
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Old Dec 5, 2007 | 01:27 PM
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I have a link in my sig that shows the difference in a summer tune and a winter tune.

Remember this was on my stock fmic too.
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Old Dec 5, 2007 | 01:29 PM
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im in the same boat...i want to do it now too but i dont wana retune too..i guess ill wait after winter...although im boosting way tooo high=/ w intake and tbe..would u suggest installin my boost controller?
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Old Dec 5, 2007 | 01:58 PM
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I would start by reviewing the logs to see what's going on with the engine, then make a determination on what to do next.
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Old Dec 5, 2007 | 03:27 PM
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Originally Posted by Mellon
I would start by reviewing the logs to see what's going on with the engine, then make a determination on what to do next.
Exactly, log first to see what's going on!!!
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