how does weather affect a/f ratio? - FordTough.ca - Home of Canadian Ford Truck Enthusiasts
 
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post #1 of 4 (permalink) Old 05-08-2008, 08:21 AM Thread Starter
 
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how does weather affect a/f ratio?

I plan on going racing this friday and its supposed to be about 55 degrees out, at mid day.

I am running 11.6 a/f ratio when i was tuned at about 80-85 degrees.

What affect will that cold temp have on my a/f ratio? will i lean out and have issues?

Sean
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post #2 of 4 (permalink) Old 05-08-2008, 08:29 AM
Biz
 
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It shouldn't matter that much. On a colder day the A/F will tend to be on the lean side, but it shouldnt be enough to be an issue. You will make some good power.
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post #3 of 4 (permalink) Old 05-08-2008, 11:32 AM Thread Starter
 
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i hope i make good power!!!

at 80-85 degrees (what i was tuned at) the MAF showed 880 counts. i have an SCT 2600 on and the max is 1023. so i have a few hundred counts to play with.
i jsut dont want to end up leaning right out. i was set up for 11.6 a/f when i was tuned, at the same 80-85 degrees. and i do have a meter, so i can keep an eye on it and i will be datalogging so i can tell if the engine is pulling timing.
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post #4 of 4 (permalink) Old 05-08-2008, 12:44 PM
Biz
 
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Quote:
Originally Posted by lightning25 View Post
i hope i make good power!!!

at 80-85 degrees (what i was tuned at) the MAF showed 880 counts. i have an SCT 2600 on and the max is 1023. so i have a few hundred counts to play with.
i jsut dont want to end up leaning right out. i was set up for 11.6 a/f when i was tuned, at the same 80-85 degrees. and i do have a meter, so i can keep an eye on it and i will be datalogging so i can tell if the engine is pulling timing.
you still have a decent amount of a/f to go before the truck will lean right out. There's a few different factors to come into place. Humidity, sea level here compared to there. Do the data logging (real time) and keep an eye on it. I dont see you having a problem though.
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