I understand that if you have your car tuned (on dyno) in colder weather that you will pull higher power numbers and worse numbers in hotter (more humid) weather.

So, is there any BEST all year around tuning time? In other words if I get my car tuned in say...December where it is probably 20 degrees (here in NY) will it negatively effect performance in the summer time when it is 90 degrees?

Is it perhaps better to tune it around 50 - 60 degrees so you can take SOME advantage of the highs and lows of temperatures in all seasons? I am pretty damn new to tuning and don't really know much about it. Thanks.

 

tuning? you going FI? can i watch?

 

Are you tuning it yourself? I find the best way is to just learn to do it yourself, and have a wideband O2 gauge on the dash. You can always keep an eye on the health of the engine and make minor adjustments when needed for maximum power. Also, you will never ever have to waste money on a dyno run again unless you want to see how much HP you make

If anyone in Dallas wants to learn to tune their own car, feel free to hit me up and I'll do some street tune coaching

 

isnt the gas a bit diffferent oveer the seasons? should there be 2 set ups?

 

The O2 sensors compensate for the different gas you get. That's what long term fuel trims are there to correct. As long as the tune is set correctly, you shouldn't have much of an issue from season to season.

 

like jeff said, the cars are pretty smart about adjusting things like that. Colder air means denser air means more fuel, that air warms up and itll scale back the fuel. I would find kind of a midrange temp, like high 60s or low 70s, that way youre covered for the east coast from spring through fall, then maybe do a winter tune since it can drop really low sometimes. That's just my opinion.

 

I can't imagine a tune for summer and one for winter would amount to more than a 20 hp difference between the two. Unless the 20hp is needed in winter for more hangtime after hitting snowbanks, I say tune for 70º and leave 'er.

 

lol where'd 20hp come from? i doubt youd see more than maybe 5 or 10 unless youre going from real cold to real hot.