Speed PHreak

Ok, I just got my new 85# injectors installed into my setup not too long ago. I'm here having fun tuning them in with my FJO wideband, it makes it a breeze. Well this morning a good question popped into my head. I'm in NC and right now it's about 30~40 degree's, i'm tuning my setup to 12:1 AFR in this cold-*** weather. Now say when summer gets here and it 75~90 degree's out, how bad is my car going to be running rich?

I guess what i'm trying to ask is how many of you guys out there run seperate tunes for the summer/winter, or different tunes depending on the outside temp. ?

boostaholic

What ecu are you running? Does it have an auto temp correction factor? With my speedpro i can set a certain level of positive or negative correction based on the intake temp charge.

boosted hybrid

I have seen a .3~.5 difference from winter time settings to the summer time. I like to set up and tune in the early spring so i get an average temperature and that usually keeps the mixture fairly consistent.


[Modified by boosted hybrid, 2:02 PM 1/28/2003]

Speed PHreak

I'm running a Zdyne SECU. I'm sure it has a certian amount of temperature correction within the N/A portion just like all ECU's do, but i'm not sure about the boosted section of the fuel curving.