this is nuts, today i felt like hitting it in the cobalt at 44 degrees and it was like 80 something the other day and now its 44 tonight, and decided lets hit it, IAT2 didnt wanna go above 115 and the coolant temps didnt touch 185 it was awsome cold air, and well i hit it and i felt the car jump harder and faster, but could a couple days and shed 40 degrees make this car a real monster?

well lets put it this way, i did a run from a 40 in 4th gear and the thing took off and the MPH's rose like nothing, i was at 80 in seconds, then next thing i looked i was rising to 115 and more, and it just kept going

 

cold air is your friend

 

yea my lill 2.2 likes the cold air too. love it, but dont love the traction stealing rain that comes with it.

 

I heard cold air also causes your car to run lean. If your car is running lean its going to run quicker and more responsive...but it may not exactly be safe.

 

nah no rain round here cleared up mid day, and the only thing is it was windy all day but that died down and wow this cobalt loves the cold air, i wish i ran it with an evo or something and have some fun even tho a little civic didnt wanna go at it, haha poor cobalt didnt get any runs tonight with cars but thats ok shes still loving it

 

 

Got to play with an SVT Focus (buddys ride) earlier tonite (no rain, so dry). It was deffinatly fun.

 

Here in Vegas, going from 100+* down to 75*-80* in about 4 weeks made an amazing difference on the butt dyno...

 

cold air doesnt change airs density enough to lean out a car that much

climate, humidity and elevation can.

 

it was about 40-45 here today
car pulls wayyy harder than when it was 90 a week ago
crazy chicago weather

 

*waiting for parts to finish my exhaust so i can test it out in the brisk cold air* I haven't been able to see what IAT2's are like yet when its cold either. I hate waiting!

 

mine is very happy too,just not my interior plastics,dash and door panels are rattling something fierce

 

Mine has been a different car in the 40's weather , It feels like i dropped a pulley size hehe. Mike is right thou , my interior is making new noises along with the ingalls TD.

 

yeah the common ingalls noises are coming back, and the thing i hate is, the heat comes on now in the car and the dash shakes a little, oo well at least i know i wont get wheel hop haha, but the freaking car pulls!!!!! holy crap, the temp went back to like upper 50's today but tonight hopefully back to the 40's cobalt loves the 40's, has anyone seen at least 1 psi gain from the cold weather?

 

yeah my car is kinda fun in cold wetaher

 

cold weather allows your IATs to stay low.
keeping those low allows your PCM to advance timing quite alot compared to hot days.
more timing + dense cold intake air = more power

and trust me, while it may lean out a tiny bit, its not going to be much.
and since GMs tunes are so disgustingly pig rich. your miles from being "unsafe"

 

I can hit almost 18 psi of boost on gm stage 2 and 2.9 pully stage2 tune when its really cool but when its warm i can make only 17 at that

 

i got a 3.1 pulley and noticed i hit about 15psi last night with stock tune and injectors, so my car is being a monster WHO WANTS TO RACE!!! haha little civic didnt wanna last night, and also i got pulled over last night for exhaust but got out of it haha PBA cards and stickers FTW!!!

 

i'm running a 3.1 pulley stock injectors and tune also, and am seeing about 14-15psi in this cold weather also.. I love it!! usually only see 12-13 on a normally hot day.. (stock pulley my car would hit 10 psi on a normal hot day)

 

going from 90* to 55~60* i lean out a half point all the way across the board

 

so you went from 10.0 to 10.5

oh noes!!! lol

 

 

Car loves the cold air, and with heated seats so do I

 

11.8 till 5k then 10.4 above that

 

I usually see about 16psi , when it's cold like now i'm getting a little more . It's hard to say on the stock gauge , but im guessing around 17psi .