A question about tunes and temperature...

[GotGrunt]

Hey guys,
I am looking to do a few mods within the next few weeks and since it's my daily driver, I would need to retune it right away. If I get a retune in the current 30* weather, would it affect the way the car runs during the hot summer months? It would be good now and in the spring/fall, but I'm assuming it would go pig rich in 90*+ weather. My current tune was done when it was 60* out so it stays safe in the cold and doesn't go too rich in the heat. Would I be ok?

[Blwn04]

If your tune is done Properly thru the MAF transfer function it will correct itself on it's own no matter the weather.

[JuiceHead]

Hey guys,
I am looking to do a few mods within the next few weeks and since it's my daily driver, I would need to retune it right away. If I get a retune in the current 30* weather, would it affect the way the car runs during the hot summer months? It would be good now and in the spring/fall, but I'm assuming it would go pig rich in 90*+ weather. My current tune was done when it was 60* out so it stays safe in the cold and doesn't go too rich in the heat. Would I be ok?

this is the same theory i've been told, however my little 2v na tune was done in the cold winter months, and when we had those 90 degree hot ass summer days and i would drive around all day long, my tune somehow or another went a little lean and would start to detonate. I've heard of alot of the 2valves doing this, but its completey backwards with the theory of tune in cold and it'll be rich in da heat. :shruggood I think it has something to do with the air quality in the hot humid summer

[GotGrunt]

If your tune is done Properly thru the MAF transfer function it will correct itself on it's own no matter the weather.
That's good to hear. Joey @ MM does my tuning, so I'm sure it'll be fine.

[GotGrunt]

this is the same theory i've been told, however my little 2v na tune was done in the cold winter months, and when we had those 90 degree hot ass summer days and i would drive around all day long, my tune somehow or another went a little lean and would start to detonate. I've heard of alot of the 2valves doing this, but its completey backwards with the theory of tune in cold and it'll be rich in da heat. :shruggood I think it has something to do with the air quality in the hot humid summer
WTF :eusa_sile

[MiliockGT]

Jimmy V told me to always tune with your parking lights on so you don't have a voltage problem at nite. I would never have thought of that!

[_J_]

this is the same theory i've been told, however my little 2v na tune was done in the cold winter months, and when we had those 90 degree hot ass summer days and i would drive around all day long, my tune somehow or another went a little lean and would start to detonate. I've heard of alot of the 2valves doing this, but its completey backwards with the theory of tune in cold and it'll be rich in da heat. :shruggood I think it has something to do with the air quality in the hot humid summer


Well it’s all in the tune ... whenever you are tuning in the cold,
a good tuner will retard the timing..

[silver snake]

good question as i will retune in january when i swap to the 2.76

[LTHL PSI]

Personally I would get both a tune for the colder months, and one for the summer months, to be safe and get the most from my tune.

[Wicked92]

IAT temp sensor reads incoming air charge then looks at a table in the ecm for spark advance or retard.....Tune wont need to redone if it was done correctly and the tables are set up correct. On NA cars its based on the real air (ambient) thats coming in. On Blown cars the IAT sensor needs to be moved AFTER the blower so it reads the heat generated by the blower and retards timing when heat builds up. Thus making car safe for both summer and winter...
If you have a MAF thats pegging and tuning in a "failed maf table" then you will need to tune for summer and winter, basically makes the car speed density.

[sambandit]

IAT temp sensor reads incoming air charge then looks at a table in the ecm for spark advance or retard.....Tune wont need to redone if it was done correctly and the tables are set up correct. On NA cars its based on the real air (ambient) thats coming in. On Blown cars the IAT sensor needs to be moved AFTER the blower so it reads the heat generated by the blower and retards timing when heat builds up. Thus making car safe for both summer and winter...
If you have a MAF thats pegging and tuning in a "failed maf table" then you will need to tune for summer and winter, basically makes the car speed density.
This is a smart man!

[GotGrunt]

This is a smart man!
So as long as I get my tune done by a competent tuner, I should be good to go. Weather won't matter... :)

[Jim Vaccaro]

So as long as I get my tune done by a competent tuner, I should be good to go. Weather won't matter... :)


ZACTLY

[GotGrunt]

ZACTLY
That's some good news Jim. I can't wait... :D