ezhangin

Ok, so I got these other rims on for snow tires, and I would say they weigh a pound or two more than the stock ones. Anyways, to get at what I want to ask, is that my Evo just is not being consistent when it comes to acceleration. Somtimes it will throw me back in my seat and sometimes it feels like something is holding it back. (I am talking about low end acceleration, not when the car begins to run out of steam at like 120 mph)

Would a new set of rims really hold the car back that much? The rims are ASA KA3s and are 17 by 7.5, and the tires are those Michellin Alpinas. I am wondering what could be causing this inconsistency and hesistation. Is it the temperature outside (freezing)? And today when I was making a turn a heard a few weird thump noises coming from near the driver side front wheel, maybe its just the suspension creaking cuz of the cold, I dunno.

I treat my Evo good, so that's why I'm wondering why it's acting up. Any ideas?

Side note - my car is 100% stock, no mods

ezhangin

bump from someone who really loves their evo

sr20det91

iTrader: (59)

Heavier rims could cause a a bit of a accereration decrease, but it would be consistent. Also, if you have a thicker sidewall on you tire it could increase the overall diameter and effectivly give you higher gearing, which would also hurt acceleration, but again it should be consistant.

I would say your problems have more to do with the temperature changing and your ECU compensating for it more than anything else. When it gets cold out turbo cars tend to boost spike more, so you ECU trys to cut boost back to target. Sometimes it pulls back more than needed so your car feels a little sluggish. It should eventually find the sweet spot and you will be good to go.

ezhangin

Ah thank you, I would hope this would be the ECU doing this. I think I may have to agree with you because it just got really REALLY cold over here. Thanks for your input!

blackevoVII

iTrader: (2)

Maybe its just your boost solenoid. On a stock car, its never the same, so you'll get kick *** pull one time and the next...flat.

ezhangin

Possibly, but I know what u mean man. What I'm taking about it just doesn't seem to boost much at all sometimes, I think the guy talking about the ECU is right. Anyone else have any comments?

gtr

iTrader: (6)

If you have a boost guage you'll know your faster on days your boost is higher. It's all weather dependent.

sr20det91

iTrader: (59)

Yea, boost guage is a must.

BTW...what are your mods, if any?

Wicked

iTrader: (7)

o4whtevors

my car does the same thing, all my 4g buddies say thats just the way the car runs stock

1blue8

Defroster is off?

1blue8

More specifically, my '03 was doggin' two weeks ago, until I relized I had the defroster on. Defroster engages the air conditioning. HP drops.