When best time for tune?
 

Hotter months of summer? Or cooler months of winter? Your talking about a big difference in temperatures.

You will get better hp and tq number if you were to tune it during the winter. But it you were to tune it during the summer the dyno should be able to give you a correction factor to a standard day.

Ian

If you get your own software or tuner, then you could build a tune for both.




D

The end result will be the same either way, but as mentioned, the numbers on a dyno will look better in the cool weather.

So Mike, your saying there wouldn't be any benefit to logging data and running the numbers if there's a significant difference in outside air temp compared to when you first made adjustments to a tune?

I thought for sure I'd have to retune mine in the fall/winter months.



D

Isn't the main difference just the added wear the heat puts on the car. That the tune will still be good winter or summer?

Yeah you will be good both winter and summer. You will just have a little better performance during the winter months.

Would the difference be noticeable?

Won't it run rich during summer months then?

Only when the motor gets really hot, at which point it will pull timing to protect itself