I live in Colorado and have experienced problems after the car sits for 2-3 hours in these cold temperatures. When I start the car, get rolling, and then shift to second gear, the engine bogs BIG time. If I give it enough throttle, the boost spikes and must certainly sound like I'm riding the clutch (which I'm not). Even after this point, when giving a very small amount of throttle the boost spools much more quickly than the engine can match and again sounds like I'm riding the clutch.

I spoke to the dealer about this and they said they haven't received any such reports from other owners (yet). Am I just not accustom to a turbo engine or does this sound like a problem? To clarify, I NEVER had such characteristics during the warmer summer/fall months.

Any thoughts?

 

I live in Colorado and also have this problem. I am on my third turbocharged car up here, including a VERY heavily modified '02 WRX, and this is the ONLY one to have this crappy of a cold start characteristic. I asked around some of my buds who have EVOs and they all said they have to warm theirs up to keep this from happening. The problem seems to go away after the first 2-3 minutes, probably the period of time the ICV and choke are engaged.

So, I can only imagine this is probably something we either have to deal with or tune out. I am thinking of heavily modifying mine and to that end I may pick up an AEM standalone EMS and attempt to tune out the cold start and general idle issues this car seems to have.

My 2c

J

 

I live in New Hampshire and travel to Maine every week and I always warm up the car (without driving it) for about 5 minutes or until the water temp gauge is close to it's normal position. And then drive it passively until it's fully warmed up. I have never experienced any of the bogging you speak of.

 

I too have noticed cold start driveability problems. But it isn't just the engine. The transmission, CV joints/transfer case, suspension and tires all are VERY crabby in the morning.

I guess that is to be expected when the factory tweeks an engine to within an inch of its life and still has to make emissions....wonder if Dynoflashing helps. Al? You there?

 

It's recommended that you warm up the EVO for at least five minutes if the temp is freezing or below. I do it whenever I can and it makes a noticeable difference in cold drivability.

Cabo

 

Geez..

You cats in Colorado aren't strangers to the cold..

Whats the big deal??

The EVO is a RICH running car..
Throw a cold start on there, and you got one RICH RUNNIN S.O.B...

Catch my drift??

Besides, read your manual..it says to let the car warm up in ANY temp..Let alone cold..

I mean, ya can't just hop on your ***** and ride her hard without a little warm up action, right??

 

I let it sit until the Rpms drop down to 870-850

(takes longer than 5 mins )

 

Anyone get a valve tick when u first start it up. Not extremely loud but noticable for me. After 3 minutes its gone.

 

what does a valve tick sound like?

 

I had an '88 Starion. That car did the same as the evo. When she was cold she was grouchy, when she got warmed up she was good to go.

 

A valve tick sounds like...


"tick tick tick tick tick..."

Cabo

 

 

My car bogs in the cold too, I think they all do. I don't know why you would want to put your engine under boost before it's warmed up. Maybe things are different at altitude, but how about just waiting 5 minutes until things get lubricated and warm, really what's the big deal?

And while we're at it, you should always stretch before exercising, and wait an hour after eating before swimming.

 

This has been discussed several times and it is the nature of the beast. I usually let it warm till its on the first hash past C and she is good to go. Only about a minute and a half, no biggie.

 

I also live in colorado and have the same problem its nothing to worry about my GS-T did the same thing. Letting the car warm up for at the very least 2 min seems to help. Try not to boost until the car warms up, its not good to boost on a block.
I've found that if the car starts to bog back off the gas and the car will run better.

This is just how the 4G63 behaves when cold.