Is it recommended to change tune for winter?
 

Total noob question here, but with temperatures/air density/fuel mixtures changing for cold-climate locations, is it recommended to get a tune tweaked for winter conditions versus using what was optimal over the summer? Not sure if the ECU compensates for these variables on its own, or if the tune has to.

From what I understand, there are considerations in place for air density changes in most tunes.

You shouldn't need to change tune for different weather. If you want a proper tune check our our OpenFlash Tablet: http://www.procedetuning.com/BRZ_FR-...ash/index.html

Even if you are in cold climate our tune has accounted for hot/cold temperatures/air density/fuel mixtures/timing changes. If you want a better understanding of how it works feel free to give us a call.

Cheers

Robert@Vishnu

small threadjack question here...

do you folks with costom tunes get the popping sound on cold mornings?

http://www.ft86club.com/forums/showthread.php?t=43408

Thanks Robert - I've got a Vortech so your OFT isn't really an option for me yet. Appreciate the input though!

If you are running ecutek (or any real tune for that matter) the IAT temps have fuel compensation so cold weather does not require a retune if those values are correct. You also have atmospheric pressure, manifold pressure.... lots of sensors and tables to compensate from a 90*F sealevel drive, to a thousand foot high romp through the mountains at 30*F

IMO thats just what is is though... compensation. Depending on your mods, those compensation tables may not do their job as well and could need tweaking.
Wouldnt hurt to do a datalog and see where your fuel trims are

Even our custom tunes have built in compensations for environment variables such as air temperature, density, altitude, etc. These compensations apply to the major areas of the tune like air/fuel ratios (AFR), ignition timing, cold start fuel and ignition compensations, etc.

We also include the same compensations for forced induction setups. On turbocharger applications, we use air temp, density, and altitude to adjust boost as well.

You shouldn't need a separate winter tune as long as your tune has the proper compensations in place. The stock tune on the ECU includes environment variable compensations too.

- Bob